KR19990050773A - How to detect the water level of the fully automatic washing machine - Google Patents

Abstract

The present invention is to detect the water level of the automatic washing machine to adjust the amount of washing water supplied according to the load and the amount of power applied to the drive motor for operating the pulsator or the pulsator and the reduction gear assembly for integrally rotating the washing tank of the washing machine It is about a method.

The present invention calculates the load applied to the driving motor and the power consumed according to the amount of the washing water supplied to the washing tank and inputs it to the control unit for controlling the driving motor so that the amount of washing water is the maximum value set in the control unit. If there is a match, the water supply can be stopped to prevent unnecessary waste of water.

Description

How to detect the water level of the fully automatic washing machine

The present invention relates to a water level detection method of a fully automatic washing machine for adjusting the amount of washing water supplied to the washing machine, and more particularly, the load amount of the drive motor for operating the pulsator or the pulsator and the reduction gear assembly for integrally rotating the washing tank; The present invention relates to a water level detecting method of a full-automatic washing machine for adjusting the amount of washing water supplied according to the amount of power applied.

In general, there are various types of washing machines, such as a vortex type washing machine, a drum type washing machine, a stirring type washing machine, etc., by a washing method. The most commonly used washing machine is a vortex type washing machine.

In the conventional vortex type washing machine, as shown in FIG. 1, water flow (upper / lower type, heart type, direction of rotation, etc.) is performed by rotating the pulsator 13 which is rotatably installed at the lower end of the washing tub 12 at high speed. It is one of the most widely used methods to generate the water and the current to wash the laundry contained in the washing tank 12. The vortex type washing machine also has a washing tank 12 rotatably installed in the inside of the storage tank 10 installed inside the outer box (not shown) to accommodate the washing water, and the lower portion of the washing tank 12 A pulsator 13 for generating water flow is rotatably installed, and the washing tank 12 and the pulsator 13 are rotatable by the reduction gear assembly 15 mounted on the bottom of the water storage tank 10. In this case, only the pulsator 13 is forwarded / inverted, or the pulsator 13 and the washing tub 12 are integrally rotated in one direction. The reduction gear assembly 15 is rotatably installed by a driving force (by an electric belt) transmitted from a driving motor 14 which is adjacently installed. The pulsator 13 is left or right driven by the decelerated output transmitted through the reduction gear assembly 15 to perform a washing stroke and a rinsing stroke, and the washing tank 12 and the pulsator 13 are integrally formed. One-way rotation is to perform a dehydration stroke. Therefore, the vortex type washing machine is to collectively perform a washing stroke, a rinsing stroke, a dehydration stroke, and the like in one tank.

In addition, the washing machine is an apparatus for adjusting the amount of washing water to be supplied, and the air tube 17 is installed on one side of the reservoir 10 and electrically connected to the control unit 19 to the air tube 17. The sensor 18 is installed, the water level detection device, the washing water supplied to the washing tank is transmitted to the sensor 18 through the air tube 17, the sensor 18 itself converts the pressure into frequency At the same time, the converted frequency is input to the controller 19. In addition, the control unit 19 was adjusted to supply a predetermined amount of washing water in accordance with a pre-stored signal according to each stroke (washing and dehydration) after measuring the water level according to the wave number.

However, the conventional water level sensor as described above has a problem that the sensor 18 does not accurately sense the pressure according to the water level deviation generated as the washing water supplied increases.

Reference numeral 16 denotes a weight balance.

The present invention has been made in consideration of the above circumstances, and an object thereof is a washing machine supplied according to a load amount and an applied power amount of a driving motor for operating a pulsator or a pulsator and a reduction gear assembly for rotating the washing tank integrally. It is to provide a level detection method of the automatic washing machine to adjust the amount of water.

The present invention is the power supply is applied to the drive motor after the start of water supply of the washing water in accordance with the program set in the control unit to achieve the above object, the drive motor rotates the reduction gear assembly, the pulsator is operated, the water flow in the washing tank In the washing machine to generate the washing, the load applied to the driving motor and the power consumed by the amount of the washing water supplied to the washing tank is calculated and input to the control unit for controlling the driving motor, the amount of washing water The present invention provides a method for detecting a water level of a full-automatic washing machine which stops water supply when it matches the value of the highest value set in the controller.

1 is a cross-sectional view showing the internal structure of a washing machine having a water level detection method using a conventional pressure switch,

2 is an overall flow chart of the present invention.

* Explanation of symbols on the main parts of the drawings *

10 ... reservoir 12 ... washing tub

13 ... pulsator 14 ... drive motor

15 ... reducer gear assembly

16 ... weight balance

17 ... air tube 18 ... sensor

19 ... control unit

Next, embodiments of the present invention will be described in detail with reference to the drawings.

Figure 2 is a water level detection method of a fully automatic washing machine according to the present invention, the water level detection method of the automatic washing machine includes a step (S1) and the water storage tank to rotate the washing tank every 20 seconds during the washing and dehydration stroke According to the level of washing water supplied to the washing tank, it is divided into high, middle, low and small into four parts, and the load and power consumed by the driving motor that drives the reduction gear assembly according to each equal part are calculated. By setting all the strokes according to the input to the programmed control unit, the driving motor operates after the start of the water supply to drive the reduction gear assembly, and at the same time rotates the pulsator of the washing tank to perform the washing stroke, and the washing tank every 20 seconds. Rotation step (S1) and the load and consumption applied to the drive motor according to the amount of washing water supplied or supplied in the step Reading the value of electric power (S2), comparing the value of the load and power consumption of the driving motor with the value set in the control unit according to the water level in the step (S3), and the value of the highest value among the values set in the step and If the match is to stop the water supply (S4).

The present invention configured as described above starts water supply according to a washing program input to the control unit, and generates a water flow while the pulsator rotates by the operation of the drive motor and the reduction gear assembly. One rotation is made, and the load and power consumption applied to the drive motor are transmitted to the controller, and the controller compares the transmitted value with the set value and stops the water supply stroke when the value is matched with the maximum value. If it is not a value, the water supply stroke is performed continuously.

As described above, according to the present invention, the load applied to the drive motor and the amount of power consumed are calculated in accordance with the amount of washing water supplied to the washing tank including the water storage tank, and inputted to a control unit that controls all the strokes of the washing machine. If the load and power consumption applied to the drive motor is the maximum amount of washing water supplied to the washing tank is to stop the water supply stroke is to prevent unnecessary waste of water.

Claims (3)

In a washing machine for which power is supplied to a driving motor after the start of water supply of washing water according to a program set in the control unit, the driving motor rotates the reduction gear assembly, and the pulsator operates to generate water in the washing tank to perform washing. , The load applied to the driving motor and the electric power consumed are calculated according to the amount of washing water supplied to the washing tank and input to the control unit for controlling the driving motor. When the amount of washing water matches the value of the highest value set in the control unit, the water supply Method for detecting the water level of the automatic washing machine characterized in that the stop. The washing machine of claim 1, wherein the washing water is divided into four stages according to the height accommodated in the washing tank including the water storage tank, and the load is input to the controller by setting the load and the amount of power consumed by the driving motor, respectively. Water level detection method. The method of claim 1 or 2, wherein the washing tank rotates once every 20 seconds of rotation of the pulsator.