KR20040064779A - Apparatus and Method of Controlling the Automatic Ice-making Machine - Google Patents

Abstract

PURPOSE: An apparatus and a method for controlling an automatic ice-maker are provided to produce ice in uniform size by continuously executing an ice-making operation and an ice-removing operation without using a microcomputer, thereby accurately diagnosing a trouble. CONSTITUTION: A power switch(10) supplies necessary power source. A sensor detecting unit(30) compares a sensing signal of each sensor with each reference set value. An output driving unit(40) executes an ice-making operation or ice-removing operation. A cam timer(20) receives the power source through the power switch for executing a timing control operation to switch the corresponding power source to the output driving unit. The cam timer controls the output driving unit according to a result of the comparison of the sensor detecting unit to control the ice-making operation or ice-removing operation.

Description

Apparatus and Method of Controlling the Automatic Ice-making Machine}

The present invention relates to a control apparatus and a method of an automatic ice maker, and more particularly, to a control apparatus and a method of an automatic ice maker that performs an ice making motor control using a simple mechanical control apparatus in an automatic ice maker.

In general, the control device of the automatic ice maker forms a plurality of holes having different intervals in the disc interlocking with the ice making motor to check whether the light is detected by the photo sensor through the formed holes. The output signal of the photo sensor detects the rotation state of the ice making motor and the current position of the ice making name, and outputs a signal for controlling the driving of the ice making motor to control the automatic ice making operation.

In other words, the conventional automatic ice maker control device receives the control of the microcomputer and transmits the rotational force of the icemaker motor which is rotated forward / backward or stopped to the shaft through a gear to rotate the ice maker name and the disc connected to both ends of the shaft. At this time, the disk is formed with a hole indicating the starting point and end of the rotation is formed with a plurality of holes with different intervals between the holes.

Accordingly, the photo sensor generates a signal indicating the rotational state of the ice making motor and the current position of the ice making name and inputs it to the microcomputer according to whether the light is detected through the hole in the disc.

Accordingly, the micom receives the signal output from the photo sensor to determine the rotation state of the ice making motor and the current position of the ice making machine, and outputs a signal for controlling the driving of the ice making motor to control the automatic ice making operation. .

As described above, in the conventional automatic ice maker, by using the microcomputer's PCB control method, there are disadvantages in that a large number of parts increases a factor of failure and a short lifetime. In addition, when A / S is performed on-site at the time of product failure, the PCB method in the conventional automatic ice maker control device is difficult to accurately diagnose and take measures, and thus, the PCB itself in which the microcomputer is built is often replaced. As a result, the cost of A / S was increased, and there were problems such as dissatisfaction of the customer due to the reoccurrence of A / S and burden of dual management cost on the producer side.

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a control apparatus and method of an automatic ice maker, which performs an ice making motor control using a simple mechanical control apparatus in an automatic ice maker.

In addition, the present invention, by using a mechanical temperature sensor and a mechanical timer in the automatic ice maker to continuously make the ice making operation and de-ice operation with a simple mechanical control without using a microcomputer, it is possible to produce ice of a uniform size, the object There is this.

In addition, the present invention is to perform a deicing operation and de-ice operation using a mechanical temperature sensor and a mechanical timer in the automatic ice maker in which ice production and ice-making operation for ice production is continuous, so that the structure is simple and the failure factors are semi-permanent There is a purpose.

In addition, the present invention controls the ice making motor using a mechanical temperature sensor and a mechanical timer in an automatic ice maker that continuously produces small ice, so that only mechanical control is inspected even when A / S is performed on-site when a product failure occurs. Therefore, it is possible to drastically lower the proportion of unknown A / S and enable accurate fault diagnosis.

1 is a block diagram showing a control device of an automatic ice maker according to an embodiment of the present invention.

FIG. 2 is an exemplary diagram showing each component in a circuit in FIG. 1; FIG.

3 is a flowchart illustrating a control method of an automatic ice maker according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: power switch unit 20: Cam Timer (Cam Timer)

A1 ~ A4: Cam Switch M: Cam Timer Motor

30: sensor detection unit 31: high temperature sensor

32: pressure sensor 33: evaporator temperature sensor

34: Hot Gas Temperature Sensor

35: ice full detection sensor

40: output drive unit 41: compressor motor (Compressor Motor)

42: Pump Motor

43: Fan Motor

44: Solenoid Valve

45: feed pump motor

An apparatus for controlling an automatic ice maker according to an embodiment of the present invention for achieving the above object includes a power switch unit for supplying the necessary power, a sensor detector for comparing the detection signal of each sensor with each reference set value; An automatic ice maker including an output driver for performing an ice making operation or an ice making operation, wherein the power is supplied through the power switch unit to perform a timing control operation to switch the corresponding power to the output driver, The cam driver may include a cam timer configured to control the output driver to control an ice making operation or an ice making operation.

Preferably, the cam timer unit and a cam timer motor for delaying the de-icing operation or the de-icing operation for a predetermined time according to the timing control; In the ice making operation, the power is supplied to the compressor motor and the pump motor of the output driver, and the power is supplied to the fan motor of the output driver according to a comparison result of the pressure sensor of the sensor detector. The power is supplied to the cam timer motor according to the comparison result, and the power is supplied to the ice filling monitoring sensor of the sensor detection unit or the output driving unit according to the comparison result of the internal temperature sensor of the sensor detection unit during the defrosting operation. And a cam switch for supplying the hot gas solenoid valve and the feed pump motor and supplying the power to the cam timer motor according to a comparison result of the evaporator temperature sensor of the sensor detection unit.

On the other hand, the control method of the automatic ice maker according to the embodiment of the present invention for achieving the above object is to switch the cam switch to a closed state by receiving power to drive the compressor motor and the pump motor to form ice on the evaporator Performing an ice making operation; Checking whether the temperature of the evaporator has reached a reference evaporator minimum temperature and driving a cam timer motor to delay the ice making operation for a predetermined time; Switching the cam switch to an open state to terminate the ice making operation and confirming whether or not the temperature inside the refrigerator is equal to or higher than a reference set temperature inside the refrigerator; Driving a feed pump motor to supply water and driving a hot gas solenoid valve to supply hot gas to the evaporator to perform a defrosting operation; Determining whether the temperature of the evaporator has reached a reference evaporator maximum temperature, driving the cam timer motor to delay the defrosting operation for a predetermined time, and then switching the cam switch back to a closed state. It features.

Alternatively, the control method of the automatic ice maker according to an embodiment of the present invention comprises the steps of cooling the condenser of the refrigeration system by driving the fan motor by checking whether the pressure of the high-pressure gas is higher than the reference set pressure value; Comprising the step of rotating the fan motor in a reverse or forward direction by comparing the temperature of the hot gas with a reference set hot gas temperature value.

In another embodiment, the control method of the automatic ice maker according to the embodiment of the present invention checks the case where the temperature inside the high temperature is equal to or lower than the reference set high temperature to stop the compressor motor, the pump motor, the hot gas solenoid valve, and the water pump motor to fill the ice. Characterized in that the process further comprises the step of performing the ice full control control by the sensor. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the control apparatus of the automatic ice maker according to the embodiment of the present invention includes a power switch unit 10, a cam timer unit 20, a sensor detection unit 30, and an output driver 40. It is made, including.

The power switch unit 10 supplies power required for the automatic ice maker control device to each component through the cam timer unit 20.

The cam timer unit 20 receives a power through the power switch unit 10 to perform a timing control operation. The cam timer unit 20 switches the power to each component block according to the timing control operation and the sensor detection unit 30. Timing control is performed to control the output driver 40 according to a comparison result applied from the control panel to perform an ice making operation or a deicing operation. In addition, the cam timer unit 20 includes cam switches A1 to A4 and a cam timer motor M, as shown in the circuit diagram of FIG. 2.

The cam switches A1 to A4 switch the power supplied through the power switch 10 to each component block so as to perform an ice making operation and a deicing operation. In the de-icing operation, the power is supplied to the compressor motor 41 of the output driver 40 and simultaneously to the pump motor 42 of the output driver 40, and the pressure of the sensor detector 30 is applied. The corresponding power is supplied to the fan motor 43 of the output driver 40 according to the comparison result applied from the sensor 32, and to the comparison result applied from the evaporator temperature sensor 33 of the sensor detection unit 30. Therefore, supply the corresponding power to the cam timer motor (M). In addition, during the defrosting operation, the power is supplied to the internal temperature sensor 31 of the sensor detection unit 30, and the corresponding power is supplied to the sensor detection unit according to a comparison result applied from the internal temperature sensor 31. Supply the ice to the full monitoring sensor 35 of the 30, or supply the power to the hot gas solenoid valve 44 of the output driver 40, the power supply pump motor of the output driver 40 ( 45) and supplies the corresponding power to the cam timer motor M according to a comparison result applied from the evaporator temperature sensor 33 of the sensor detection unit 30.

The cam timer motor M is driven by the power supplied according to the timing control of the cam switches A1 to A4 to delay the ice making operation or the ice removal operation for a predetermined time.

The sensor detecting unit 30 performs an operation according to the timing control of the cam timer unit 20 to compare the detection signal of each sensor with each reference setting value, and compares the comparison result to the cam timer unit 20. Deliver it. In addition, the sensor detecting unit 30 includes a temperature sensor 31, a pressure sensor 32, an evaporator temperature sensor 33, a hot gas temperature sensor 34, and an ice filling sensor 35. Equipped.

The internal temperature sensor 31 is supplied with power according to the timing control of the cam timer unit 20 to detect the internal temperature and check whether the temperature is lower than the reference internal temperature (eg, + 2 ° C., variable). Notifies the cam timer unit 20.

The pressure sensor 32 receives power according to the timing control of the cam timer unit 20 to determine whether the pressure of the high pressure gas at the outlet of the compressor motor 41 of the output driver 40 is higher than the reference set pressure value. Check and control the driving of the pump motor 42 of the output driver 40 according to the result.

The evaporator temperature sensor 33 is supplied with power according to the timing control of the cam timer unit 20 to detect the temperature of the evaporator EVA so that the evaporator temperature sensor 33 is lower than the reference set evaporator minimum temperature (eg, -20 ° C., which is variable). After confirming that the result is notified to the cam timer unit 20, and detects the temperature of the evaporator (EVA) to determine whether it is higher than the reference set evaporator maximum temperature (for example, +4 ℃, not variable) and the result The cam timer unit 20 is informed.

The hot gas temperature sensor 34 is supplied with power according to the timing control of the cam timer unit 20 so that the temperature of the hot gas at the outlet of the solenoid valve 44 of the output driver 40 is set as the reference hot gas. Check whether it is higher than the temperature value, and controls the rotation direction of the pump motor 42 of the output driver 40 according to the result.

The ice full load detection sensor 35 receives power according to timing control of the cam timer unit 20, detects a full state of ice, and informs the cam timer unit 20 of the result.

The output driver 40 performs an operation under the control of the cam timer unit 20 to perform an ice making operation or a deicing operation. The output driver 40 includes a compressor motor 41, a pump motor 42, a fan motor 43, a solenoid valve 44, and a water feed pump motor 45.

The compressor motor 41 is driven according to the timing control of the cam timer unit 20 to generate high pressure gas to cool the evaporator EVA.

The pump motor 42 is driven by receiving power under timing control of the cam timer unit 20 to inject water into the evaporator EVA so that ice is formed.

The fan motor 43 is driven by receiving power according to the comparison result applied from the pressure sensor 32 to cool the condenser of the refrigeration system, and in the reverse direction according to the comparison result applied from the hot gas temperature sensor 34. Or forward rotation.

The solenoid valve 44 receives power according to timing control of the cam timer unit 20 to open the valve so that hot gas passes through the evaporator EVA.

The feed pump motor 45 is supplied with power by driving power under timing control of the cam timer unit 20 to supply water.

The control method of the automatic ice maker according to the embodiment of the present invention will be described with reference to the flowchart of FIG. 3.

First, when power is applied through the power switch 10, the cam timer unit 20 receives the corresponding power to perform timing control on the contacts A1 to A4 of the cam switches provided therein, that is, The ice making operation or the ice making operation is performed by the change of the state of the corresponding cam switch contacts A1 to A4 corresponding to a preset time.

The cam timer unit 20 switches the cam switch to a closed state (step S1), that is, the first to third contacts A1 to A3 of the cam switch contacts A1 to A4 are respectively ' By switching to the state connected to the NO 'terminal and by switching the fourth contact A4 to the state connected to the' NC 'terminal, the power is supplied to the compressor motor 41 and the pump motor 42 of the output driver 40. Is supplied to and driven (step S2).

Accordingly, the high pressure gas is sent to the evaporator EVA by driving the compressor motor 41 to cool the evaporator EVA, and at the same time water is supplied to the evaporator EVA by driving the pump motor 42. An ice making operation is performed in which ice is sprayed to form ice (step S3).

At this time, the pressure sensor 32 of the sensor detecting unit 30 located at the outlet of the compressor motor 41 checks whether the pressure of the high pressure gas is higher than the reference set pressure value (step S4), and at this time, the corresponding high pressure. When the pressure of the gas reaches the reference set pressure value, the switch is turned on to supply and drive the power to the fan motor 43 of the output driver 40 to cool the condenser of the refrigeration system (step S5).

On the other hand, if the pressure of the high pressure gas is lower than the reference set pressure value, the switch is turned off to stop the drive of the fan motor 43 (step S6). That is, the fan motor 43 performs an on / off operation by the switch set value (ie, the reference set pressure value) of the pressure sensor 32.

In addition, in the hot gas temperature sensor 34 of the sensor detecting unit 30 located at the outlet of the hot gas solenoid valve 44 of the output driver 40, whether the temperature of the hot gas is higher than the reference set hot gas temperature value. When the temperature of the corresponding hot gas is higher than the reference set hot gas temperature value, the fan motor 43 is rotated in the reverse direction (step S8), while the temperature of the corresponding hot gas is set as the reference. When it is lower than the hot gas temperature value, the fan motor 43 is rotated forward (step S9).

Accordingly, the temperature of the evaporator EVA is gradually lowered. At this time, the evaporator temperature sensor 33 of the sensor detector 30 detects the temperature of the evaporator EVA to detect a reference set evaporator minimum temperature (eg, − It is checked whether it is lower than 20 degreeC and a variable is possible (step S10).

If the temperature of the evaporator EVA is higher than the reference set evaporator minimum temperature in the tenth step S10, the cam timer motor M of the cam timer unit 20 is turned off (step S11). The cam switches A1 to A4 of the cam timer unit 20 maintain the closed state. When the temperature of the evaporator EVA reaches the reference set evaporator minimum temperature in the tenth step S10, The switch contact of the evaporator temperature sensor 33 is changed to drive the cam timer motor M of the cam timer unit 20 through the second contact A2 and the fourth contact A4 of the cam switch. (Step S12).

Then, after the cam timer motor M is further rotated for a predetermined time to delay the ice making operation, the cam timer unit 20 reverses the cam switch contacts A1 to A4 to the open state. (S13), that is, among the cam switch contacts A1 to A4, the first to third contacts A1 to A3 are switched to the state connected to the 'NC' terminals, respectively, and the fourth contact A4 is switched. The ice making operation is terminated by switching to the state connected to the 'NO' terminal (step S14). At this time, the driven compressor motor 41 and the pump motor 42 are stopped, and the driven cam timer motor M is also stopped.

Thus, the cam switches A1 to A4 are the same as the state in which the defrosting operation is switched. First, the internal temperature sensor 31 of the sensor detection unit 30 detects the internal temperature and sets a reference internal temperature (eg, (+ 2 ° C., variable) is checked (step S15).

If, in the fifteenth step S15, the temperature inside the refrigerator is less than or equal to the reference set temperature, the cam timer unit 20 includes all the components blocks (that is, the compressor motor 41, the pump motor 42, and the hot gas). Shut off the power applied to the solenoid valve 44 and the feed water pump motor 45 to perform the ice filling control operation by the ice filling detection sensor 35 of the sensor detecting unit 30 (step S16). ).

On the other hand, when the temperature inside the refrigerator is greater than or equal to the reference setting temperature inside the fifteenth step (S15), the cam timer unit 20 supplies the power to the output driver through the first contact point A1 of the cam switch. 40 is applied to the hot gas solenoid valve 44 to open the valve so that hot gas passes through the evaporator EVA (step S17). In addition, the power is supplied to the feed pump motor 45 of the output driver 40 through the third contact A3 of the cam switch to supply water (step S18).

As a result, the temperature of the evaporator (EVA) on which the ice is attached is gradually increased, thereby performing a defrosting operation in which the ice formed in the evaporator (EVA) is dropped (step S19).

Thereafter, the evaporator temperature sensor 33 detects the temperature of the evaporator EVA and checks whether the evaporator temperature is higher than a reference set maximum evaporator temperature (for example, + 4 ° C., not adjustable) (step S20). When the temperature of the corresponding evaporator EVA reaches the reference set evaporator maximum temperature in step 20, the cam timer motor M is connected through the second contact point A2 and the fourth contact point A4 of the cam switch. It drives (step S21).

Then, the cam timer motor M is further rotated for a predetermined time to delay the ice-breaking operation, and then the cam timer unit 20 reverses the cam switch contacts A1 to A4 to switch to the closed state. (Step S22), that is, among the cam switch contacts A1 to A4, the first to third contacts A1 to A3 are respectively switched to the state connected to the 'NO' terminal, and the fourth contact A4 is 'NC'. The ice-breaking operation is terminated by switching to the state connected to the terminal. At this time, the driven hot gas solenoid valve 44 and the feed pump motor 45 stop, and the driven cam timer motor M also stops.

As a result, the cam switches A1 to A4 have the same state as the above-described state of the ice making operation, and thus the ice making operation is performed again.

On the other hand, the operation performed according to the state of the cam switch contact (A1 ~ A4) will be described in more detail with reference to the circuit diagram of FIG.

First, when the state of the cam switches A1 to A4 in the cam timer unit 20 is in the ice making operation, that is, in the cam switches A1 to A4, the first contact A1 and the second contact A2. ) And the third contact A3 are connected to the 'NO' terminal, respectively, and the fourth contact A4 is connected to the 'NC' terminal, the power switch 10 is turned on to turn on the power supply. When applied to the cam timer unit 20, the cam timer unit 20 performs the ice making operation by switching the power applied through the corresponding power switch 10 to each component block.

Accordingly, the cam timer unit 20 supplies the power to the cam switches A1 to A4 regardless of the contact state of the internal temperature sensor 31 of the safety PCB provided in the sensor detection unit 30. ), The power is supplied to the compressor motor 41 of the output driver 40 to drive the compressor motor 41, and the power passing through the first contact A1 of the cam switch is output. It is supplied to the pump motor 42 of the drive unit 40 to drive the pump motor 42.

As the compressor motor 41 is driven, the evaporator EVA is made cold, and water is injected into the corresponding cold evaporator EVA by the pump motor 42 to form ice.

At this time, the pressure sensor 32 of the sensor detecting unit 30 located at the outlet of the compressor motor 41 checks whether the pressure of the high pressure gas at the outlet of the compressor motor 41 is higher than the reference set pressure value. When the pressure of the corresponding high pressure gas is higher than the reference set pressure value, the pressure sensor 32 is turned on to apply the power to the fan motor 43 of the output driver 40, thereby providing the corresponding fan. The motor 43 is driven to cool the condenser of the refrigeration system.

In addition, in the hot gas temperature sensor 34 of the sensor detecting unit 30 located at the outlet of the hot gas solenoid valve 44 of the output driver 40, whether the temperature of the hot gas is higher than the reference set hot gas temperature value. When the temperature of the hot gas is higher than a reference set hot gas temperature value, the fan motor 43 is turned on by turning on the 'CCW' side of the fan motor 43. When the temperature of the hot gas is lower than the reference set hot gas temperature value, the 'CW' side of the fan motor 43 is turned on so that the fan motor 43 is rotated forward.

When the ice making operation is performed as described above, ice is formed on the surface of the evaporator EVA and the temperature of the evaporator EVA gradually decreases as the refrigeration load decreases. At this time, the evaporator of the sensor detector 30 is reduced. The temperature sensor 33 detects the temperature of the evaporator EVA to determine whether the temperature is lower than the reference set evaporator minimum temperature (eg, -20 ° C, variable).

Thus, when the temperature of the evaporator EVA reaches the minimum set temperature of the reference evaporator, the switch contact of the evaporator temperature sensor 33 is changed so that the second contact point A2 and the fourth contact point A4 of the cam switch are changed. By driving the cam timer motor (M) of the cam timer unit 20 through.

Accordingly, after the cam timer motor M is driven to delay the ice making operation for a predetermined time, the cam timer unit 20 connects the fourth contact A4 of the cam switch to the 'NC' terminal. The contact point is changed to the state connected to the 'NO' terminal, that is, all the contacts A1 to A4 of the cam switch are changed to the state connected to the 'NO' terminal, respectively.

Then, the cam timer motor M further delays the ice making operation for a predetermined time through the second contact A2 of the cam switch, and then the second contact of the cam switch in the cam timer unit 20. When the contact point is changed from the state in which A2 is connected to the 'NO' terminal to the state connected to the 'NC' terminal, the cam timer motor M is stopped at this time. In this case, the first contact point A1, the second contact point A2 and the third contact point A3 of the cam switch are connected to the 'NC' terminal, respectively, and the fourth contact point A4 is set to 'NO'. Since the state is connected to the terminal, the state of the cam switches A1 to A4 is switched to the ice-free operation state.

By switching the contacts of the cam switches A1 to A4 as described above, the power is applied to the internal temperature sensor 31, and thus the internal temperature sensor 31 detects the internal temperature and sets a reference internal temperature (eg , + 2 ° C., which is variable), and when the temperature in the refrigerator is less than or equal to the reference setting temperature, stops all operations related to the ice making operation and detects an ice full detection sensor of the sensor detection unit 30 ( 35) ice filling control operation can be performed.

On the other hand, when the internal temperature is higher than the reference set internal temperature, the power is applied to the hot gas solenoid valve 44 of the output driver 40 through the first contact A1 of the cam switch. Solenoid valve 44 opens the valve to allow hot gas to pass through the evaporator EVA.

At the same time, the power is applied to the feed pump motor 45 of the output driver 40 through the third contact A3 of the cam switch, and the feed pump motor 45 is driven by the power. Supply water.

Accordingly, as the hot gas supplied by the solenoid valve 44 passes through the evaporator EVA in which ice is formed and water is supplied by the feed pump motor 45 as described above, the evaporator The temperature of the outlet (EVA) is increased to drop the ice formed in the evaporator (EVA) to start the ice-breaking operation.

Then, as the temperature at the outlet of the evaporator EVA increases, the evaporator temperature sensor 33 detects the temperature of the evaporator EVA, and thus, is higher than the reference set evaporator maximum temperature (eg, + 4 ° C., not variable). Check if it is high.

Thus, when the temperature of the evaporator (EVA) is equal to or higher than the reference set evaporator maximum temperature, the cam timer motor of the cam timer unit 20 through the second contact A2 and the fourth contact A4 of the cam switch. Will drive (M).

Accordingly, after the cam timer motor M is driven to delay the ice-breaking operation for a predetermined time, the cam timer unit 20 may include the first contact point A1, the second contact point A2, and the cam contact point of the cam switch. The contact point is changed from the state in which the third contact point A3 is connected to the 'NC' terminal to the state connected to the 'NO' terminal. That is, all the contacts A1 to A4 of the cam switch are respectively 'NO'. Change to the state connected to the terminal.

Then, as described above, the compressor motor 41 and the pump motor 42 are driven, regardless of the contact state of the temperature sensor 31 in the high temperature, wherein the cam timer motor M is the cam switch. After further delaying for a predetermined period of time through the fourth contact A4 of '4', the cam timer unit 20 'NC' is connected to the fourth contact A4 of the cam switch to the 'NO' terminal. When the contact is changed while being connected to the terminal, the cam timer motor M is stopped. In this case, the first contact point A1, the second contact point A2, and the third contact point A3 of the cam switch are each connected to the 'NO' terminal, and the fourth contact point A4 is' Since the state is connected to the NC 'terminal, the state of the cam switches A1 to A4 is switched back to the ice making operation state.

As described above, by the mechanical temperature sensor and the mechanical timer according to the present invention by making the ice-making operation and the de-ice operation continuously by a simple mechanical control without using a microcomputer, not only can produce ice of uniform size, but also the structure It is semi-permanent due to its simple and small number of failures, and even when performing A / S at the time of product failure, only the mechanical control needs to be inspected, which significantly reduces the proportion of unknown A / S and enables accurate diagnosis.

Claims (5)

In the automatic ice maker including a power switch unit for supplying the required power, a sensor detector for comparing the detection signal of each sensor with each reference set value, and an output driver for performing an ice making operation or an ice making operation, The cam timer unit controls the de-icing operation or the de-icing operation by controlling the output driver according to the comparison result of the sensor detection unit by performing a timing control operation by receiving power through the power switch unit to perform a timing control operation. Control device of an automatic ice maker, characterized in that made. The method of claim 1, The cam timer unit includes a cam timer motor for delaying an ice making operation or a deicing operation for a predetermined time according to timing control; In the ice making operation, the power is supplied to the compressor motor and the pump motor of the output driver, and the power is supplied to the fan motor of the output driver according to a comparison result of the pressure sensor of the sensor detector. The power is supplied to the cam timer motor according to the comparison result, and the power is supplied to the ice filling monitoring sensor of the sensor detection unit or the output driving unit according to the comparison result of the internal temperature sensor of the sensor detection unit during the defrosting operation. And a cam switch for supplying the hot gas solenoid valve and the water feed pump motor and supplying the power to the cam timer motor according to a comparison result of the evaporator temperature sensor of the sensor detection unit. Performing an ice making operation in which ice is applied to the evaporator by driving the compressor motor and the pump motor by switching the cam switch to a closed state upon receiving power; Checking whether the temperature of the evaporator has reached a reference evaporator minimum temperature and driving a cam timer motor to delay the ice making operation for a predetermined time; Switching the cam switch to an open state to terminate the ice making operation and confirming whether or not the temperature inside the refrigerator is equal to or higher than a reference set temperature inside the refrigerator; Driving a feed pump motor to supply water and driving a hot gas solenoid valve to supply hot gas to the evaporator to perform a defrosting operation; Determining whether the temperature of the evaporator has reached a reference evaporator maximum temperature, driving the cam timer motor to delay the defrosting operation for a predetermined time, and then switching the cam switch back to a closed state. A control method of an automatic ice maker. The method of claim 3, Cooling the condenser of the refrigeration system by driving the fan motor by checking whether the pressure of the high pressure gas is higher than a reference set pressure value; And rotating the fan motor in a reverse or forward direction by comparing the temperature of the hot gas with a reference set hot gas temperature value. The method of claim 3, And checking the case where the temperature inside the refrigerator is equal to or lower than the reference temperature, and stopping the compressor motor, the pump motor, the hot gas solenoid valve, and the water feed pump motor to perform the ice filling control operation by the ice filling sensor. Control method of an automatic ice maker, characterized in that.