KR100432696B1 - Device and method for controlling dish washing machine having rack-rotating function - Google Patents

Abstract

PURPOSE: A device and a method for controlling a dish washing machine having a rack-rotating function are provided to improve washing power by making dishes move with a rotating rack and evenly washing the dishes. CONSTITUTION: A control device of a dish washing machine comprises a key input unit(10) through which a user inputs a command, a control unit(20) outputting a control signal for performing steeping, washing, rinsing and drying while rotating a rack, a motor drive unit(30) outputting a driving signal for rotating a motor leftward and rightward with response to the control signal inputted from the control unit, a rack rotating motor(40) rotating the rack leftward and rightward with response to the driving signal inputted from the motor drive unit, a valve drive unit(50) for changing the supply and flow of water with response to the control signal inputted from the control unit, a pump drive unit(60) for generating pressure for flowing the water, and a blower drive unit(80) for supplying a wind for drying the dishes with response to the control signal inputted from the control unit.

Description

Apparatus and method for controlling dishwasher with rack rotation function

The present invention relates to a control apparatus and method for a dishwasher having a rack rotation function, and more particularly, to a dishwasher having a rack rotation function, And more particularly, to a control apparatus and method for a dishwasher having a rack rotation function.

As a kind of household appliances to reduce the hand of housewives, the spread of dishwashers that automatically clean dishes is becoming common.

In the dishwasher, water is sprayed toward dishes mounted on a rack, so that dirt adhered to the dishes is removed and then clean water is re-sprayed to rinse the dishes and dry the dishes.

However, in the conventional dishwasher, since the rack is fixed, the dishwasher is cleaned using only the water output of the water sprayed from the water sprayer, which causes a problem that the washing effect is somewhat deteriorated.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art by providing a rack rotation function capable of improving the cleaning effect And a method for controlling the dishwasher.

FIG. 1 is a circuit diagram of a controller of a dishwasher having a rack rotation function according to an embodiment of the present invention; FIG.

FIG. 2 is a side sectional view of a dishwasher having a rack rotation function according to an embodiment of the present invention; FIG.

FIG. 3 is a flowchart of a method of controlling a dishwasher having a rack rotation function according to an embodiment of the present invention.

Description of the Related Art [0002]

10: key input unit 20: microcontroller

30: motor driver 31: driver

32, 33: Photo triac 40: Rack rotation motor

50: valve driving part 60: pump driving part

70: Display part 80: Fan drive part

AC: AC power T31, T32: Triac

In order to achieve the above-mentioned object, a first aspect of the present invention provides a key input device, comprising: a key input unit for allowing a user to input a command; A motor driver for outputting a driving signal for rotating the motor in the left and right direction according to a control signal input from the control unit; A valve driving unit for changing the supply and flow of water in accordance with a control signal input from the control unit, and a control unit for controlling the pressure to which the water can be moved And a control unit for controlling the supply of the wind for drying the dishes according to a control signal inputted from the control unit And a blower driving unit.

According to a second aspect of the present invention, there is provided a method of operating a semiconductor memory device, comprising the steps of: initializing all memory variables when a power supply is applied; reading a signal input from the operation switch to determine whether the operation switch is on Opening the water supply valve so that the water is supplied in a predetermined amount when the operation switch is turned on; causing the rack to rotate to the right and left; spraying water in accordance with the washing, washing and rinsing steps; Draining the water after stopping the water injection when it is finished, and ending the operation after drying the tableware.

According to a third aspect of the present invention, there is provided a semiconductor memory device comprising: instruction means for starting an operation when power is applied and initializing all memory variables; and means for reading a signal input from the operation switch, A command means for opening the water supply valve to supply a predetermined amount of water when the operation switch is turned on, a command means for causing the rack to rotate to the left and right, and command means for spraying the water in accordance with the washing, A command means for draining water after stopping the water spraying when the washing is finished, and a command means for stopping the operation after drying the dishware.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in order that the present invention may be easily understood by those skilled in the art.

FIG. 1 is a circuit diagram of a controller of a dishwasher having a rack rotation function according to an embodiment of the present invention, and FIG. 2 is a side sectional view of a dishwasher having a rack rotation function according to an embodiment of the present invention.

As shown in FIG. 1 and FIG. 2, the controller of the dishwasher having a rack rotation function according to an embodiment of the present invention includes a key input unit 10, a key input unit 10, A motor driving unit 30 having an input terminal connected to the output terminal of the microcontroller 20 and a rack having an input terminal connected to the output terminal of the motor driving unit 30, A pump driving unit 60, a display unit 70, and a blower driving unit 80, each of which has an input end connected to an output end of the microcontroller 20.

The microcontroller 20 uses a memory having a built-in memory therein.

The motor driving unit 30 includes a driver 31 having an input terminal connected to the output terminal of the microcontroller 20 and a photo triac 32 having an input terminal connected to the output terminal of the driver 31, A resistor R31 connected between the input terminal of the phototriacs 32 and 33 and the power supply voltage Vcc and an input terminal connected to the output terminals of the phototriacs 32 and 33 The resistors R32 and R34 are connected between the output ends of the phototriacs 32 and 33 and the control ends of the triacs T31 and T32, The capacitors C31 and C32 and the resistors R33 and R35 connected in parallel to the triacs T31 and T32 and the coils L31 and L32 connected to the output ends of the triacs T31 and T32 .

FIG. 3 is a flowchart of a method of controlling a dishwasher having a rack rotation function according to an embodiment of the present invention.

As shown in FIG. 3, the method of controlling a dishwasher having a rack rotation function according to an embodiment of the present invention includes steps of starting an operation when power is applied (S10), initializing all memory parameters (S30) of reading a signal input from the operation switch to determine whether the operation switch is on (S30), opening the water supply valve when the operation switch is turned on so as to supply a certain amount of water (S40) A step S60 of causing the rack to rotate left and right, a step S60 of spraying the water in accordance with the washing, washing and rinsing steps, a step S70 of stopping the water spray when the washing is finished, S80) of drying the tableware, drying the tableware (S90), and terminating the operation (S100).

The operation of the control apparatus and method of the dishwasher having the rack rotation function according to the embodiment of the present invention with the above-described structure will be described below.

When the power is applied, the operation procedure shown in FIG. 3, which is programmed and stored in the internal memory of the microcontroller 20, is executed by the microcontroller 20, thereby performing the rack rotation function according to the embodiment of the present invention The operation of the control device of the dishwasher is started (S10).

When the operation is started, the microcontroller 20 initializes all memory variables (S20), reads a signal input from the key input unit 10, and determines whether an operation switch (not shown) is turned on (S30) .

When the operation switch of the key input unit 10 is turned on, the microcontroller 10 opens a water supply valve (not shown) by outputting a control signal to the valve driving unit 50 so that water is supplied by a predetermined amount (S40).

Next, the microcontroller 20 outputs a control signal to the motor driving unit 30 so that the rack rotating motor 40 is rotated to the left and right, whereby the rack (not shown) fixedly connected to the rotating shaft of the rack rotating motor 40 50 are rotated to the left and right (S50).

In this case, the driver 31 of the motor driving unit 30 causes the phototriacs 32 and 33 to operate in response to a control signal input from the microcontroller 20, The racks T31 and T32 are driven to apply AC power to the rack rotation motor 40 so that the rack rotation motor 40 is rotated. The coils L31 and L32 of the motor driving unit 30 are provided for noise removal and the capacitors C31 and C32 and the resistors R33 and R35 constitute a snubber circuit.

Next, the micro controller 20 outputs control signals to the valve driving unit 50 and the pump driving unit 60 so that water is supplied to the water injecting apparatuses 70 and 80 through the conduits, The water is sprayed toward the dishes placed in the rack 50. [

In this case, the microcontroller 20 controls the type (hot water or cold water) and type (continuous or intermittent) of the water sprayed from the water supply devices 70 and 80 so that the washing, rinsing, (S60). In the washing process, the hot water is sprayed intermittently so that the hot water is sprayed continuously. In the washing process, the debris adhering to the tableware is allowed to fall off. In the washing process, So that the dishware is rinsed.

Then, the pump 60 operated by the pump driving unit 60 causes the water to circulate with the pressure.

When the dishwashing is completed as described above, the microcontroller 20 outputs control signals to the valve driving unit 50 and the pump driving unit 60 to shut off the various valves and suspend the operation of the pump 6, (S70), a drain valve (not shown) is opened to allow the water to be discharged to the outside of the dishwasher (S80).

When the drainage is completed, the microcontroller 20 outputs a control signal to the blower driving unit 80 so that warm air is supplied to dry the tableware (S90), and the operation is terminated (S100).

Since the screwdriver 90 located at the lower portion of the dishwasher serves to collect debris generated when the dishwasher is washed and is detachable from the dishwasher, the user collects the debris collected on the despooler 90 and treats the wastewater as waste I can do it. The display unit 70 displays the operation status of the dishwasher so that the user can check the progress of the dishwashing operation.

As described above, in the embodiment of the present invention, a control device of a dishwasher having a rack rotation function that has an effect of improving the cleaning force by allowing the tableware to move along with the rack while the tableware is being cleaned, Method can be provided. This effect of the present invention can be modified and used by those skilled in the art without departing from the gist of the present invention in the dishwasher field.

Claims (8)

A control unit for outputting a control signal for causing the rack to rotate left and right while advancing, rinsing and rinsing, and then drying the rack when the start command is input from the key input unit; A motor driving unit for outputting a driving signal for rotating the motor left and right according to a control signal input from a control unit; a rack rotation motor for rotating the rack left and right according to a driving signal input from the motor driving unit; A valve driving unit for changing the supply and flow of water according to a control signal input from the control unit, a pump driving unit for providing a pressure at which the water can be moved, And a blower driving unit for supplying wind. And a controller for controlling the dishwasher. The control apparatus for a dishwasher according to claim 1, further comprising a display unit for displaying operation and progress of the dishwasher. The control apparatus for a dishwasher according to claim 1 or 2, wherein the controller uses a microcontroller having a built-in memory therein. The motor driving apparatus according to claim 1 or 2, wherein the motor driving unit includes: a driver that converts a control signal input from the control unit into a driving signal and outputs the driving signal; an optocoupler that optically transmits a driving signal input from the driver; And a triac for turning on the AC power by a signal input from the photocoupler to apply AC power to the rack rotation motor. 5. The control apparatus for a dishwasher according to claim 4, further comprising a snubber circuit connected in parallel with the triac. 5. The control apparatus for a dishwasher according to claim 4, further comprising a coil for removing a noise component included in an AC signal output from the triac. A step of initializing all the memory variables when the power is applied; and a step of reading the signal inputted from the operation switch to determine whether the operation switch is on, and when the operation switch is on, opening the water supply valve, So that the rack is rotated to the left and right; water is sprayed in accordance with the washing, washing and rinsing steps; drainage after stopping water spraying when the washing is finished; And terminating the operation of the dishwasher having the rack rotation function. A command means for initializing all memory variables when the power is applied, and for reading a signal input from the operation switch to determine whether the operation switch is on, and when the operation switch is on, opening the water supply valve, A command means for causing the rack to rotate left and right, command means for causing water to be sprayed in accordance with the washing, washing and rinsing processes, command means for draining water after stopping the water spraying after the washing, And a command means for terminating the operation after drying the tableware is stored.