KR20000000863A - Amount sensing device of washer and method thereof - Google Patents

Abstract

PURPOSE: An amount sensing device of a washer and a method thereof are provided to exactly detect the amount of the laundry. CONSTITUTION: The amount sensing device of a washer comprises: a washing motor for revolving an inner tub of a washer; a memory memorizing a first accelerating time for stabilizing the position of the mechanical elements of the inner tub, a first stopping time for stabilizing the position of the mechanical elements of the inner tub and a first setting time for detecting the weight of the laundry put in the inner tub; a rotary water sensing piece for sensing the rotary water in the inner tub; and a control piece for controlling the washing motor and water supplying valve to perform the water supplying, washing, rinsing, and dehydrating processes.

Description

Detecting device of washing machine and Detecting method of washing machine

The present invention relates to an apparatus for detecting a quantity of a washing machine and a method for detecting a quantity of a washing machine, and more particularly, to an apparatus for detecting a quantity of a washing machine of a washing machine capable of accurately detecting a quantity of a washing machine and a quantity detecting method thereof.

The washing machine according to the prior art has detected the amount of capacity by the first acceleration period T11-T0 as shown in FIG. That is, the rotation speed N12 of the inner tank was determined when the first acceleration period T11-T0 passed, and the amount of the laundry cloth contained in the inner tank was sensed according to the rotation speed of this inner tank. The rotation speed of the inner tank reaches the normal rotation speed N12 at the time T12, and blocks the application of voltage to the washing motor at the time T13, so that the inner tank stops at the time T14.

However, according to the conventional method of detecting a quantity of washing machine as described above, when the inner tank rotates during the first acceleration period T11-T0, the inner tank rotates with the mechanical unstable element of the inner tank. Therefore, after the first acceleration period (T11-T0) has elapsed, the determined number of revolutions (N11) of the inner tank did not become a suitable value for detecting the amount of load. Therefore, the method of detecting the amount of dose by the number of revolutions N11 of the inner tank after the first acceleration period T11-T0 as described above has a problem in that the amount of scattering of the amount of dose is not large enough to accurately detect the amount of dose.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to provide an apparatus for detecting a quantity of a washing machine and a sensing method thereof capable of accurately detecting the quantity of the washing machine.

In order to achieve the above object, the quantity detection device of the washing machine according to the present invention includes a washing motor for rotating an inner tank, a first acceleration time for stabilizing a position of the mechanical element of the inner tank, and a position of the mechanical element of the inner tank. A memory in which a first stop time for stabilization and a first set time for sensing the weight of the laundry cloth contained in the inner tank are stored, rotation speed detecting means for detecting the number of rotations of the inner tank, and the first stored in the memory. 1 accelerating the inner tub according to the acceleration time, stopping applying voltage to the washing motor according to the first stop time stored in the memory, accelerating the inner tub for the first set time stored in the memory; By calculating the amount of laundry cloth contained in the inner tank according to the rotation speed of the inner tank input from the rotation speed detecting means The weight of the cloth is detected, and the amount of water required for the water supply stroke, the duration of the washing stroke, the intensity of the water flow in the washing stroke, the number of rinses in the rinsing stroke, and the dehydration time in the dehydration stroke are determined according to the weight of the cloth. Control to set and control the washing motor and water supply valve to execute water supply stroke, laundry stroke, rinse stroke and dehydration stroke according to the set amount of water, the duration of the washing stroke, the intensity of water flow in the washing stroke, the number of rinsing and the dehydration time It is characterized by consisting of means.

In addition, the quantity detection method of the washing machine according to the present invention has a first acceleration step of accelerated rotation of the inner tank in order to stabilize the position of the mechanical element of the inner tank, and the first acceleration to stabilize the position of the mechanical element of the inner tank A first stopping step of stopping acceleration in the accelerating step, a second accelerating step of secondly accelerating the washing tub to sense the amount of laundry cloth contained in the inner tub, and a first preset time set in the control means Next, a rotation speed detection step of detecting the rotation speed of the inner tank, and a quantity detection step of detecting the amount of the laundry in the laundry cloth by the size of the rotation speed of the wash water.

1 is a graph showing a change in the rotational speed of the inner tank over time in the washing machine according to the prior art,

2 is a cross-sectional view of a washing machine according to an embodiment of the present invention;

3 is a control circuit block diagram of a washing machine according to an embodiment of the present invention;

4 is a flowchart of a control method of a quantity detection device of a washing machine according to an embodiment of the present invention;

5 is a graph showing a change in the rotational speed of the inner tank with the passage of time in the control method of the quantity detection device of the washing machine according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

102: the outer shell 104: the inner shell

116: stator 118: rotor

123: washing motor 124: memory

126: rotation speed detection means 130: control means

T1-T0: first acceleration time T3-T1: first stop time

T4-T3: first setting time

As shown in Fig. 2, an inner tub 104 is installed in the outer tub 102 to wash the laundry cloth. In the inner tank 104, a pulsator 106 is integrally formed with the inner tank 104 to wash the laundry cloth in the inner tank 104.

A balancing member 108 is formed on the upper side of the inner tub 104 to maintain the balance of the inner tub 104.

A drain valve 112 is provided below the outer tub 102 to drain the water in the outer tub 102. The drain valve 112 is provided with a drain hose 114 to drain the water in the outer tub 102.

The outer tub 102 is provided with a stator 116 to rotate the rotor described later. Around the stator 116, a rotor 118 is provided to rotate by receiving the rotating magnetic field from the stator 116 to rotate the inner tank 104 and the pulsator 106. The axis of rotation 120 of the rotor 118 is coupled to the hub 122 to rotate the inner tub 104 and pulsator 106. The stator 116 and the rotor 118 constitute a washing motor 123 for rotating the inner tub 104 and the pulsator 106 in one embodiment of the present invention.

As shown in Fig. 3, the memory 124 includes a first acceleration time T1-T0 for stabilizing the position of the mechanical element of the inner tank, and a first stop for stabilizing the position of the mechanical element of the inner tank. The time T3-T1 and the first set time T4-T3 for sensing the weight of the laundry cloth contained in the inner tank are stored.

The rotation speed detecting means 126 is attached to the Hall sensor 128 and the rotating shaft 120 connected to the control means to be described later to detect the rotation speed of the inner tub 104, the magnetic force toward the Hall sensor 128 It consists of a magnet piece 129 for generating a.

The control means 130 operates the washing motor 123 according to the first acceleration time, the first stop time, and the first set time stored in the memory 124, and is input from the rotation speed detection means 126. A microcomputer detects a quantity of water according to the number of revolutions of the inner tank 104 and controls a washing operation according to the detected quantity of water.

The power supply means 131 is connected to the control means 130 to receive an AC voltage from an external AC power supply and to supply the DC voltage of 5V to the control means 130.

The key input means 132 is connected to the control means 130 to input a user's operation command regarding washing.

The water supply valve 134 receives the control signal from the control means 130 and is connected to the control means 130 to open and close the water supply port (not shown).

The washing motor driving circuit 136 receives a control signal from the control means 130 and applies the voltage having a direction to the washing motor 123 including the stator 116 and the rotor 118. )

The drain valve 112 is connected to the control means 130 to receive a control signal from the control means 130 to open / close the drain hose 140.

The notifying means 142 includes a display panel and a buzzer for receiving a display signal and an acoustic signal related to the washing operation from the control means 130 and notifying the user of the washing state.

Next, a description will be given of a method for detecting a quantity of a washing machine of a washing machine according to an embodiment of the present invention in connection with the apparatus for detecting a quantity of washing machine according to an embodiment of the present invention configured as described above.

In Fig. 4, S denotes a step STEP.

As an initial condition for explaining the operation, it is assumed that the door (not shown) is closed to close the upper portion of the outer tub 102, and the laundry cloth is contained in the inner tub 104.

Next, it is assumed that the user has pressed the "operation start key" of the key input means 132.

Subsequently, an operation start command is output from the "operation start key" of the key input means 132 to the control means 130.

Subsequently, a control signal is output from the control means 130 to the washing motor driving circuit 136 in the first acceleration step S1. Subsequently, a voltage in one direction is applied from the washing motor driving circuit 136 to the washing motor 123. Then, the rotor 118 of the washing motor 123 rotates.

Then, the rotating shaft 120 connected to the rotor 118 rotates, and the inner tub 104 is rotated according to the rotation of the rotating shaft 120.

Subsequently, as shown in FIG. 5, as the magnitude of the voltage applied from the washing motor driving circuit 136 to the washing motor 123 gradually increases during the first acceleration time T1 -T0, the washing motor 123 is increased. The rotation speed of the rotor 118, the rotating shaft 120 and the inner tub 104 of gradually increases. Next, at time T1, the rotation speed of the inner tank 104 becomes N1.

Next, in the first stop step S2, an operation stop signal is output from the control means 130 to the laundry motor drive circuit 136 at a time T1. Then, no voltage is applied to the washing motor 123 from the washing motor driving circuit 136. Then, the speed of the rotor 118, the rotating shaft 120 and the inner tub 104 of the washing motor 123 gradually decreases for the time (T2-T1).

Next, at time T2, the rotation of the rotor 118, the rotation shaft 120, and the inner tub 104 of the washing motor 123 is stopped. Then, the position of the laundry cloth in the inner tank 104 is stabilized, and thus the mechanical position of the inner tank 104 is stabilized. It also stabilizes the position of other mechanical elements around the tank. The mechanical elements are the rotor 118, the rotation axis 120, the hub 122, and the like.

Subsequently, in the second acceleration step S3, after the first stop time T3-T1 has elapsed from the time T1, a control signal is transmitted from the control means 130 to the washing motor drive circuit 136 at time T3. Is output. Subsequently, a voltage in one direction is applied from the washing motor driving circuit 136 to the washing motor 123. Then, the rotor 118 of the washing motor 123 rotates. Then, the rotating shaft 120 connected to the rotor 118 rotates, and the inner tub 104 is rotated according to the rotation of the rotating shaft 120.

The rotor 118 of the washing motor 123 rotates as the magnitude of the voltage applied from the washing motor driving circuit 136 to the washing motor 123 gradually increases during the second acceleration time T6-T3. The rotation speed of the shaft 120 and the inner tub 104 gradually increases.

Next, in the time determining step S4, the control means 130 determines whether the time elapsed from the time T3 to the present has reached the first preset time T4-T3 preset in the memory 124.

As a result of this determination, when it is determined that the time elapsed from the time T3 to the present has reached the first preset time T4-T3 preset in the memory 124, the rotation speed detecting step (in the case of YES). Proceed to S5.

In the rotation speed sensing step S5, the rotation speed N2 of the inner tub 104 is output from the rotation speed sensing means 126 to the control means 130.

Next, in the quantity detection step S6, the control means 130 is based on the rotation speed of the inner tank 104 input from the rotation speed detection means 126 to the control means 130, the memory 124 The weight of the laundry cloth contained in the inner tank is calculated according to the weight conversion table stored in the rotation speed / laundry cloth. Then the control means 130 detects the weight of the laundry cloth.

Next, in the data setting step S7, the control means 130 calculates various data corresponding to the weight of the laundry cloth according to the weight / various data conversion table of the laundry cloth. Various data corresponding to the weight of the laundry cloth are, for example, the amount of water required for the water supply stroke, the duration of the washing stroke, the intensity of the water flow in the washing stroke, the number of rinses in the rinsing stroke, and the dehydration time in the dewatering stroke. Subsequently, the control means 130 sets various data corresponding to the weight of the laundry cloth in the memory 124 by storing the calculated various data corresponding to the weight of the laundry cloth in the memory 124.

Next, in the washing execution step S8, a control signal is output from the control means 130 to the washing motor drive circuit 136 at time T5. The magnitude of the voltage applied from the washing motor driving circuit 136 to the washing motor 123 is kept constant. Then, the rotation speed of the rotor 118, the rotation shaft 120, and the inner tub 104 of the washing motor 123 is constant so that the rotation speed of the inner tub 104 is kept constant at the normal rotation speed N3.

Next, an operation stop signal is output from the control means 130 to the washing motor driving circuit 136 at time T6. Then, no voltage is applied to the washing motor 123 from the washing motor driving circuit 136. The speed of the rotor 118, the rotating shaft 120, and the inner tub 104 of the washing motor 123 then slowly decreases over time T7-T6.

Next, at time T7, the rotation of the rotor 118, the rotating shaft 120, and the inner tub 104 of the washing motor 123 is stopped.

Next, the control means 130 according to the amount of water set in the memory 124, the duration of the washing stroke, the strength of the water flow in the washing stroke, the number of rinsing and dehydration time, the water supply stroke, washing stroke, rinsing stroke and dehydration stroke Proceed.

Then, the laundry cloth in the inner tank 104 is washed.

On the other hand, the control means 130 determines that the time elapsed from the time T3 to the present in the time determination step S4 has not yet reached the first preset time T4-T3 preset in the memory 124. In the case of NO, the flow proceeds to the second acceleration step S3, and as described above, the rotation speed of the inner tub 104 is continuously increased.

As described above, according to the apparatus for detecting a quantity of washing machine and a sensing method thereof according to the present invention, before accelerating the inner tank to detect the amount of water, the inner tank is preliminarily accelerated to secure the stability of the position of the mechanical elements of the inner tank. Therefore, at the time of inherent acceleration for detecting a quantity of water, there is a very excellent effect of accurately detecting the weight of the laundry cloth in the inner tank by a small scatter diagram.

On the other hand, by accurately detecting the weight of the laundry cloth, it is possible to precisely set various data corresponding to the weight of the laundry cloth, it is possible to reduce the waste of energy when washing, there is a very excellent effect that can clean the laundry cloth.

Claims (2)

Washing motor to rotate the inner tank, A first acceleration time for stabilizing the position of the mechanical element of the inner tub, a first stop time for stabilizing the position of the mechanical element of the inner tub and a first set time for sensing the weight of the laundry cloth contained in the inner tub This stored memory, Rotation speed detection means for sensing the rotation speed of the inner tank; Accelerating the inner tank according to the first acceleration time stored in the memory, stopping applying voltage to the washing motor according to the first stop time stored in the memory, and during the first set time stored in the memory After accelerating the inner tank, the weight of the washing cloth is sensed by calculating the quantity of the laundry cloth contained in the inner tank according to the rotation speed of the inner tank inputted from the rotation speed detecting means, and according to the detected weight of the washing cloth Set the amount of water required for the water supply stroke, the duration of the washing stroke, the intensity of water flow in the washing stroke, the number of rinses in the rinsing stroke and the dehydration time in the dehydrating stroke, and the set amount of water, the duration of the washing stroke, and the washing stroke. Depending on the strength of the water stream, the number of rinsing cycles and the dehydration time, the washing motor and feed Poryang sensing apparatus of a washing machine which is characterized by being a control means for controlling the valve. A first acceleration step of firstly accelerating and rotating the inner tank to stabilize the position of the mechanical elements of the inner tank; A first stopping step of stopping acceleration in the first acceleration step to stabilize the position of the mechanical element of the inner tub; A second acceleration step of secondly accelerating the washing tub to sense a quantity of laundry cloth contained in the inner tub; A rotation speed detection step of sensing the rotation speed of the inner tank after the first set time set in the control means; A quantity detection method of the washing machine, characterized in that consisting of a quantity detection step of detecting the quantity of the laundry cloth by the size of the number of revolutions of the wash water.