KR100416907B1 - Method of Controlling Operation of a Large Scale Ice-making Machine of Vertical Type - Google Patents

Abstract

The present invention relates to a large-scale ice maker operation control method of the vertical method for making a faster and larger amount of small ice chunks more effectively. The present invention relates to a drain valve and a pump motor at a predetermined time interval by checking an ice making mode setting from a switch controller. And sequentially driving the solenoid valve to perform a drainage operation for a preset drainage time; Stopping the driving of the drain valve and the pump motor after the draining time has elapsed, and simultaneously driving the solenoid valve for a predetermined solenoid valve delay time so that ice can be formed on the ice sheet more quickly during the ice making operation; Driving the compressor after the solenoid valve delay time has elapsed and delaying the compressor for a predetermined pump motor delay time and then driving the pump motor to perform an ice making operation; During the deicing operation, after detecting a continuous short signal of the ice sensor for a predetermined time and confirming the ice generation, the pump motor is temporarily stopped and then the drain valve, the pump motor, and the solenoid valve are sequentially driven at predetermined time intervals. Performing a hot gas operation; During the hot gas operation, after detecting the instantaneous open signal of the ice discharge detection sensor to confirm the ice discharge, the driving of the drain valve and the pump motor is stopped, and the solenoid valve is continuously driven for the solenoid valve delay time, and then the ice making is performed. Characterized in that it comprises a process of performing the operation again.

Description

Vertical Method of Control of Ice Maker in Vertical Type {Method of Controlling Operation of a Large Scale Ice-making Machine of Vertical Type}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical ice maker and, more particularly, to a method of controlling a large ice maker of a vertical manner to more efficiently produce a faster and larger amount of small ice chunks.

Recently, due to the improvement of the standard of living, a lot of ice is required for everyday life regardless of the season, various kinds of ice makers are manufactured to manufacture only small ice that is easy to handle.

In addition, most ice maker structures have a plurality of cup-type ice making cases (i.e. ice sheets) installed in an evaporator section in which a low-temperature, low-pressure refrigerant flows in one refrigeration cycle including a compressor, a condenser, a capillary, an evaporator, and a liquid separator. That is, after a certain period of time after the ice maker is started, the water filled in the case will turn into a small chunk of ice.

Although most of these ice makers have been proposed various mechanisms or structures to reduce the user's hand, there is a disadvantage that the entire ice making process is not automatically performed.

Therefore, Korean Patent No. 272210, Control and Method of Ice Maker, secures its shortcomings to completely separate the lumps of ice after water in the ice making case freezes, and to automatically perform major tasks such as resupplying and checking the amount of ice storage. To be done.

However, such a conventional ice maker may control all operations by a program of a control unit such as a microcomputer, which may cause an overload of the control unit, and requires a large number of sensors for resupplying water and checking the amount of ice storage. As a result, a large number of motion controls not only increase the error occurrence factor, but also restrict the generation of a large amount of ice mass at a high speed, and also increase the cost of the product.

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a method of controlling a large ice maker operation of the vertical method for making a faster and larger amount of small ice chunks more effectively.

In addition, the present invention minimizes the operation control of the control unit in the vertical ice maker operation control method and eliminates the need for many sensors for resupply, ice storage amount, etc., thereby reducing the error occurrence factor and lowering the unit cost of the product, The purpose is.

In addition, the present invention, in the vertical control method of large ice maker operation, it is possible to quickly handle various errors occurring during the operation of the vertical ice maker, it is an object.

In addition, the present invention is to enable a more hygienic management of the ice sheet by performing the washing operation in the vertical ice maker operation control method, the object is.

1 is a block diagram showing the configuration of a system for the vertical ice machine operation control according to an embodiment of the present invention.

FIG. 2 is an exemplary view schematically showing a circuit of each component block in FIG. 1. FIG.

3 is a flow chart illustrating a vertical ice maker operation control method according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: input switch unit 11: switch control unit

12: switch operation unit 13: input switch

20: input driver 30: output driver

31: compressor drive unit 32: solenoid drive unit

33: pump motor drive unit 34: drain valve drive unit

35: fan motor drive unit 40: sensor detection unit

41: ice detection sensor 42: ice ejection detection sensor

43: fan temperature sensor 44: pressure sensor

50: display drive unit 60: control unit

According to an exemplary embodiment of the present invention, a vertical ice maker operating control method according to an embodiment of the present invention checks an ice making mode setting from a switch controller to sequentially operate a drain valve, a pump motor, and a solenoid valve at predetermined time intervals. Driving to perform a drainage operation for a preset drainage time; Stopping the driving of the drain valve and the pump motor after the draining time has elapsed, and simultaneously driving the solenoid valve for a predetermined solenoid valve delay time so that ice can be formed on the ice sheet more quickly during the ice making operation; Driving the compressor after the solenoid valve delay time has elapsed and delaying the compressor for a predetermined pump motor delay time and then driving the pump motor to perform an ice making operation; During the deicing operation, after detecting a continuous short signal of the ice sensor for a predetermined time and confirming the ice generation, the pump motor is temporarily stopped and then the drain valve, the pump motor, and the solenoid valve are sequentially driven at predetermined time intervals. Performing a hot gas operation; During the hot gas operation, after detecting the instantaneous open signal of the ice discharge detection sensor to confirm the ice discharge, the driving of the drain valve and the pump motor is stopped, and the solenoid valve is continuously driven for the solenoid valve delay time, and then the ice making is performed. Characterized in that it comprises a process of performing the operation again.

Preferably, the vertical ice maker operation control method according to an embodiment of the present invention, when there is no short signal of the ice sensor during the predetermined ice-making mode operation time during the ice making operation, or the predetermined ice during the hot gas operation Determining that the ice detection sensor has failed during the detection sensor delay time and displaying an error after turning off all loads of the output driver; And detecting the three-stage switch off or power on / off of the switch controller to automatically release the error, and detecting the switching to the ice making or washing of the three-stage switch to start the operation in the initial operation state. Characterized in that made.

Also preferably, in the vertical ice maker operation control method according to an embodiment of the present invention, when there is no instantaneous open signal of the ice ejection detection sensor during a predetermined ice ejection detection sensor delay time during the hot gas operation, the ice ejection is performed. The method may further include displaying an error after determining that the detection sensor has failed and turning off all the loads of the output driver.

Alternatively, the vertical ice maker operation control method according to another embodiment of the present invention checks the washing mode setting from the switch controller to sequentially drive the drain valve and the pump motor at predetermined time intervals to wash for a preset drainage time. Performing an operation; Stopping driving of the drain valve and the pump motor after the draining time has elapsed and delaying the driving of the pump motor for a predetermined pump motor delay time and then driving the pump motor for a predetermined time to supply water to the bucket; The washing operation and the water supply operation are repeatedly performed for a preset washing time, and when the washing time has elapsed, the washing operation and the water supply operation are repeatedly performed until the switching of the three-stage switch is turned off or the ice making is performed. Characterized in that further comprises the process.

Alternatively, the vertical icemaker operation control method according to another embodiment of the present invention is a case where the open signal state of the ice ejection detection sensor is maintained for a predetermined time during the draining operation, the ice making operation or the washing operation. Determining the ice filling in the ice reservoir and displaying the ice filling after turning off all loads of the output drive unit; Detecting the three-stage switch off or power on / off of the switch control unit to automatically release the ice filling, and detects the switch to the deicing or washing of the three-stage switch to start the operation to the initial operating state further Characterized in that the made up. Alternatively, the vertical ice maker operation control method according to another embodiment of the present invention is the case where the open signal state of the ice ejection detection sensor is maintained for a predetermined time during the draining operation, the ice making operation or the washing operation. Determining that the ice is full in the reservoir and displaying the ice full after turning off all the loads of the output drive unit; The method may further include removing the ice filling display and performing the ice making operation again when a predetermined time elapses after the ice filling detection sensor is changed to a short signal state after the ice filling display. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, a system for vertical control of a large ice maker in accordance with an embodiment of the present invention has an input switch unit 10, an input driver 20, an output driver 30, And a sensor detector 40, a display driver 50, and a controller 60. 2 is a diagram briefly showing a circuit of each component block in FIG. 1, for example.

The input switch unit 10 is a printed circuit board (A / S), and includes a switch controller 11, a switch manipulation unit 12, and an input switch 13.

The switch control unit 11 is an ice making / off / washing three-stage switch for selecting an operation mode of a large ice maker, and informs the control unit 60 of setting of ice making, off and washing by a user. Here, the corresponding ice making and cleaning switch automatically has a delay time of a predetermined time (for example, 1 second) so that an overload does not occur due to a sudden power supply to each component, and an error due to overload To prevent this from happening.

The switch operation unit 12 is a switch having four functions of input, decrement, increase, and items. The switch operation unit 12 changes a control initial value necessary for the overall operation of a large ice maker, and the input switch wants to change the control initial value. It changes to setting value change mode, and the corresponding increase and decrease switch allows to change the control initial value of the item to be changed, and the corresponding item switch allows to select the item to change.

The input switch 13 is turned on at the time of the occurrence of the hostile, driving the compressor, the solenoid valve and the fan motor through the control unit 60 and the output driver 30 to perform a forced hot gas operation, the corresponding forced hot gas When the user presses the input switch 13 again during the operation, it is turned off to stop the forced hot gas operation, and when the user presses the input switch 13 in the test mode, the control unit ( 60) and the output driver 30 allows the load test to be repeated in the same order as the compressor, solenoid valve, pump motor, drain valve and fan motor, and the corresponding input switch 13 by the user during the corresponding test mode operation. When pressed again, it is turned off to stop the corresponding test mode operation.

The input driving unit 20 is installed in the bucket for storing the water supplied to the large ice maker to control the water supply by using the corresponding bowl. Here, since the water supply is made by the amount of the water tank, it does not affect the operation cycle (Cycle) of the large ice maker at all.

The output driver 30 is controlled by a control value necessary for the signal of the sensor driver 40 and the overall operation of the large ice maker set in the EEPROM of the controller 60. The compressor driver 31, the solenoid valve The drive part 32, the pump motor drive part 33, the drain valve drive part 34, and the fan motor drive part 35 are provided.

The compressor driving unit 31 controls the driving of the compressor under the control of the controller 60 during the ice making mode operation and the hot gas cycle operation.

The solenoid valve driving unit 32 controls the driving of the solenoid valve according to the control of the control unit 60. In particular, after the ice discharge is completed, the solenoid valve is further driven for a predetermined time (for example, about 5 seconds). This allows the ice to form faster on the ice sheet during later deicing operations.

The pump motor driver 33 controls the driving of the pump motor under the control of the controller 60.

The drain valve driver 34 controls the driving of the drain valve under the control of the controller 60.

The fan motor driver 35 controls the driving of the fan motor according to the temperature sensed by the fan temperature sensor 43 during the ice making operation and the washing mode operation.

The sensor detecting unit 40 transmits a signal of each sensor to the control unit 60, an ice detecting sensor 41, an ice ejection detecting sensor 42, a fan temperature sensor 43, and a pressure sensor 44. It is provided.

The ice sensor 41 detects that ice making is completed by an electrode sensor and informs the controller 60. The ice sensor is a continuous signal that is detected and opened for a predetermined time (for example, about 7 seconds). And transmits a detection signal to the controller 60 by a short. Here, the short phenomenon may occur due to the water flowing down the ice plate by the pump motor when the ice making mode is operated. However, since the ice is judged to be detected for about 7 seconds continuously, an error due to the corresponding short phenomenon may be prevented.

The ice ejection detection sensor 42 detects the falling of the ice from the ice plate by a hot gas using a proximity sensor and informs the controller 60. The falling of the ice is instantaneously and detects a signal of a short moment. Since it is necessary to transmit the detection signal to the controller 60 by the open and short of the proximity sensor.

The fan temperature sensor 43 detects the temperature of the compressor using a thermistor as an electronic sensor and notifies the control unit 60 to control the operation of the fan motor.

The pressure sensor 44 is a pressure sensing switch as shown in FIG. 2, detects that the pressure of the compressor has reached a dangerous level, and informs the controller 60 to block the load.

As shown in FIG. 2, the display driver 50 is a lamp PCB configured with an external LED lamp on a separate PCB, and whether power is supplied to the on / off of the operation display lamp under the control of the controller 60. To check whether the ice is full by turning on / off of the indicator lamp, and confirming that the pressure of the large ice maker has reached a dangerous level by the pressure sensor 44 by turning on / off the indicator lamp. Displays various items and setting values in the setting value changing mode. In addition, it displays a program (i.e., micom) version (eg, 'u1.0') of the controller 50 and a test mode (eg, 'tSt').

The control unit 60 sets control values necessary for the overall operation of the large ice maker and stores them in the EEPROM, and checks the signals applied from the input switch unit 10 or the sensor detecting unit 40 to output the control unit 30. Alternatively, the operation of the display driver 50 is controlled, and the PCB check function, the manual cleaning function, and the like are performed, and the operation of each component block of the output driver 30 is controlled by a signal of each sensor and a set control value.

For example, the controller 60 receives a detection signal from the ice sensor 41 to perform a hot gas operation at 8 seconds after 7 seconds has elapsed, and a short day is about 200 seconds from the start of the corresponding hot gas operation. In this case, it is determined as a short error and the whole operation is stopped, and when it is opened for more than 60 minutes during normal operation, that is, when there is no short signal of the ice sensor 41, it is determined as an open error and the entire operation is stopped. In addition, the controller 60 receives the detection signal from the ice discharge detection sensor 42 to perform an ice making operation, and the ice discharge detection sensor 42 is a continuous signal during the ice making mode or the washing mode operation. In the case of an open state for about 30 seconds, it is determined that the ice is full in the ice reservoir, and the entire operation is stopped, and when there is no detection signal of the ice ejection detection sensor 42 for about 200 seconds from the start of hot gas, 42 is determined to be an error, and the entire operation is stopped. When the signal of the ice ejection detection sensor 42 is open for more than 30 seconds and then changes to a short signal, the short signal is continuously detected for about 3 minutes. Allows you to perform the ice making mode again.

Referring to the flowchart of FIG. 3, a vertical ice maker operation control method according to an embodiment of the present invention is as follows.

First, the control initial value required for the entire operation of the large ice maker is set and stored in the EEPROM in the control unit 60. The control initial value is a drainage time for draining the water collected during the operation of the large ice maker and collected in the drip tray for a predetermined time. Set value, pump motor delay time setting value to allow the pump motor to run after delaying the set time to delay the starting of the pump motor in the ice making or cleaning mode operation after draining is completed during the corresponding drain time setting value, hot Large ice maker when the solenoid valve delay time setting value for allowing the solenoid valve to be operated as much as the set time after the ice discharge by the gas is completed, and there is no detection signal of the ice discharge detection sensor 42 for the set time from the start of hot gas operation. Ice detection sensor to stop driving Open time setting value, ice sensor sensor delay time setting value for stopping the operation of the large ice maker when the short circuit of the ice sensor 41 continues for a set time from the start of hot gas operation, the input switch (13) Forced hot gas time setting value for forcibly performing hot gas operation by the set time to remove the accumulated ice, when the detected temperature of the fan temperature sensor 43 when the fan motor is driven reaches the set temperature value The fan motor operating temperature set value for turning off when the fan motor is turned on and decreased by a predetermined value (for example, -3 (° C.)) from the set temperature value, the angle of the output driver 30 in the test mode. Test mode load time setting value for sequentially performing loads of the configuration block at set time intervals, time set during ice making mode operation Not include washing time set value for the specified period of time to perform the de-icing mode operation time set value, the cleaning operation mode for displaying the error if it is not applied with the detection signal from the ice detecting sensor (41).

For example, set the initial drain time to 15 seconds, set the initial pump motor delay time to 15 seconds, set the initial solenoid valve delay time to 5 seconds, and set the initial ice discharge sensor delay time to 200 seconds. The initial ice sensor delay time is set to 200 seconds, the initial forced hot gas time is set to 80 seconds, the initial fan motor operating temperature is set to 30 (℃), and the initial test mode load time is set to 2 seconds. Set to seconds, the initial ice making mode operation time is set to 60 minutes, the initial washing time is set to 11 minutes 25 seconds.

Then, when the user turns on the circuit breaker, power is supplied to each component of the large ice maker. At this time, the control unit 60 receives the corresponding power, converts the power into the power required for each component, and delivers the display driver. 50) Turn on the operation indicator lamp.

In addition, when the user selects an ice making or washing mode among the operation modes of the large ice maker through the three-stage switch of the ice making / off / washing, the switch control unit 11 sets the ice making or washing mode setting by the user in the control unit 60. At the same time, power is supplied to each component part after having a delay time of a predetermined time (for example, 1 second). That is, the switch control unit 11 allows the normal operation of the large ice maker to be performed after a predetermined time (for example, 3 seconds) at the first power-on.

In addition, the input driving unit 20 controls the water supply using a buckle installed in a bucket for storing water supplied to the large ice maker, and since the water supply is made by the quantity of the bucket, the operation cycle of the large ice maker is not affected at all. As a result, the overall operation control operation is rather simple, and the bure itself is mechanical, thus minimizing the occurrence of failure. In other words, the use of the corresponding burette does not use a complicated device such as a separate water supply valve for water supply, thereby making it easy to repair in case of failure and lowering the unit cost of the product.

Thus, the control unit 60 confirms the ice making or washing mode setting notification applied from the switch control unit 11 (step S1). In this case, when the ice making mode setting is confirmed in the first step S1, the output driving unit The drain valve driver 34, the pump motor driver 33, and the solenoid valve driver 32 in the 30 are controlled to sequentially drive the drain valve, the pump motor, and the solenoid valve at predetermined time intervals (for example, one second). To start drainage.

At this time, the control unit 60 reads the drainage time setting value stored in the EEPROM to continuously operate the drain valve, the pump motor, and the solenoid valve to drain the water accumulated in the drip tray by the corresponding drainage time setting value. (Step S2).

For example, when the corresponding drainage time setting value is 15 seconds, the drain valve, the pump motor, and the solenoid valve are sequentially driven at the interval of 1 second, so that the drain valve, the pump motor, The continuous drive of the solenoid valve is made for 12 seconds.

The controller 60 reads the solenoid valve delay time setting value (for example, 5 seconds) stored in the EEPROM after the drainage operation of the second step S2 is completed (step S3), and delays the corresponding solenoid valve. The solenoid valve is further driven as much as the time set value so that ice formation on the ice sheet can be made faster during the later ice making operation. At this time, the controller 60 turns off all the loads of the other components of the output driver 30, that is, controls the drain valve driver 34 and the pump motor driver 33 to control the drain valve and the pump motor. Stop the drive.

Accordingly, the control unit 60 checks whether the solenoid valve delay time setting value has elapsed (step S4), controls the solenoid valve driving unit 32 to stop driving of the solenoid valve, and then the compressor driving unit ( 31), the compressor is driven, and the pump motor delay time setting value (e.g., 15 seconds) stored in the EEPROM is read, and the pump motor driver 33 is controlled by the corresponding pump motor delay time setting value. In this case, the pump motor is driven after being delayed without driving the pump motor (step S5).

Then, ice is generated on the ice plate of the large ice maker by performing the ice making operation as described above. At this time, the ice sensor 41 detects whether ice making is completed and informs the controller 60.

Here, since the ice sensor 41 is an electrode sensor, the ice detection operation can be recognized as the completion of ice making when the ice is enlarged to a certain size and the two anodes are energized to generate a short. It detects for a predetermined time (for example, about 7 seconds) as a continuous signal and transmits a detection signal to the controller 60 by a short of the ice sensor 41.

This is because a short phenomenon may occur due to the water flowing down the ice plate by the pump motor during the deicing mode operation. However, since the ice is continuously detected for a predetermined time (for example, about 7 seconds), the short phenomenon may occur. This is because an error can be prevented.

Accordingly, the controller 60 checks whether a detection signal is applied from the ice sensor 41 when the ice making mode is operated (step S6). In this case, the ice making stored in the EEPROM in the sixth step S6 is performed. After reading the mode operation time setting value (for example, 60 minutes), it is checked whether the detection signal is applied from the ice detection sensor 41 during the ice making mode operation time setting value in the ninth step S9, and then the corresponding detection signal. Is not applied, that is, when there is no short signal from the ice sensor 41, it is determined that the ice sensor 41 has failed and the ice making operation of the large ice maker is stopped and the display driver 50 is controlled. The operation indicator lamp flashes at predetermined time intervals (e.g., 2 seconds) to indicate that an error has occurred (step S7).

In this case, when the automatic release is desired, the three-stage switch of the switch control unit 11 may be turned off. In the case of an error caused by an external influence or other environment or condition, not a direct failure of the ice sensor 41. If the user wishes to restart after the ice has been discharged by the low hot gas mode operation, the operation is started in the initial operation state by switching the three-stage switch to ice making or washing.

On the other hand, when a detection signal is applied from the ice sensor 41 during the ice making mode operation time setting value in the sixth step S6, the controller 60 applies a detection signal from the ice detection sensor 41. In response, the pump motor driving unit 33 is controlled to temporarily stop the driving of the pump motor, and then perform a hot gas mode operation after a predetermined time (for example, 8 seconds after 7 seconds).

That is, the controller 60 controls the drain valve driver 34, the pump motor driver 33, and the solenoid valve driver 32 in the output driver 30 to drain water at predetermined intervals (for example, one second). The valve, the pump motor, and the solenoid valve are sequentially driven to start hot gas mode operation (step S8).

Then, when the ice falls from the ice sheet of the large ice maker by the hot gas mode operation, the ice ejection detection sensor 42 uses the proximity sensor when the proximity sensor is opened by the falling ice. In this case, the fall of the ice is instantaneous and the proximity sensor is used because it needs to detect a short open signal. That is, when the large ice maker powers on, the proximity sensor is supplied with power to form a magnetic force line having a constant intensity, so that when the ice falls from the ice plate, a change of the magnetic force line occurs and detects the open and short control. 60) tell ice throwing.

Accordingly, the controller 60 reads the ice ejection detection sensor delay time setting value (for example, 200 seconds) stored in the EEPROM, and then the ice ejection detection sensor delay time setting value from the time when the hot gas mode operation is started. Check the detection signal applied from the ice ejection detection sensor 42 (step S9).

Accordingly, when there is no instantaneous open signal of the ice ejection detection sensor 42 during the ice ejection detection sensor delay time setting value at the time of hot gas operation in the ninth step S9, an external influence or other environment And determining that an error has occurred in the ice discharge detection sensor 42 or a case where an error has occurred in the ice discharge port of the large ice maker, and stops the ice making operation of the large ice maker and controls the display driver 50. The display lamp flashes at predetermined time intervals (e.g., 2 seconds) to indicate that an error has occurred (step S10).

In this case, when automatic release is desired, the power may be turned on / off, and the ice may be discharged due to an external influence or an error caused by other environment and conditions, not a direct failure of the ice discharge detection sensor 42. If you want to restart later, start the operation in the initial operation state by turning on / off the ELB switch as shown in FIG.

On the other hand, when there is a momentary open signal of the ice ejection detection sensor 42 during the ice ejection detection sensor delay time setting value during the hot gas operation in the ninth step S9, the controller 60 performs ice. It is determined that the dispensing is completed and performs the fourth step S4 again to perform the ice making operation again.

At this time, if the control unit 60 reads the ice detection sensor delay time setting value (for example, 200 seconds) stored in the EEPROM, the corresponding ice detection sensor delay time setting value from the time when the hot gas mode operation is started. During continuous ice detection, that is, it is checked whether the ice detection sensor 41 continues to be in a short signal state (step S11), at which time the continuous short signal of the ice detection sensor 41 in the corresponding fourteenth step S14. In the case of the state, it is determined that the ice sensor 41 is broken, the operation of the large ice maker is stopped, and the display driving unit 50 is controlled to flash the operation display lamp at a predetermined time interval (for example, 2 seconds). Indicates that has occurred (step S12).

In this case, when the automatic release is desired, the power may be turned on / off or the third stage switch of the switch control unit 11 may be turned off. If it is an error caused by condition and wants to restart after the ice is discharged by hot gas mode operation, the operation is started in the initial operation state by switching the three stage switch to ice making or washing.

In addition, in the twelfth step S12, when the ice detection sensor 41 is not in the continuous short signal state, the control unit 60 determines that the ice discharge is completed and repeats the fourth step S4. To perform ice making operation again.

On the other hand, when confirming the washing mode setting in the first step (S1), the control unit 60 receives the washing mode setting notification from the switch control unit 11 after reading the drainage time setting value stored in the EEPROM In addition, the drain valve driver 34 and the pump motor driver 33 in the output driver 30 are controlled to sequentially drive the drain valve and the pump motor at predetermined time intervals (for example, one second) to set a corresponding drainage time setting value. By performing the washing operation as much as possible, it is possible to clean the ice sheet and drip tray, etc., so that the large ice maker can be more hygienically managed (step S13).

When the washing operation of the thirteenth step S13 is completed, the controller 60 controls the drain valve driver 34 and the pump motor driver 33 to stop driving of the drain valve and the pump motor. After reading the pump motor delay time setting value stored in the EEPROM and controlling the pump motor driving unit 33 by the corresponding pump motor delay time setting value (for example, 15 seconds) to delay without driving the pump motor, It is driven for a time (for example, about 3 minutes) to supply water to the bucket of the large ice maker (step S14). At this time, the water supply is made by the bure, the corresponding drainage time setting value can be changed.

Thereafter, the controller 60 reads the washing time setting value stored in the EEPROM and repeats the thirteenth step S13 and the fourteenth step S14 during the washing time setting value to perform the washing operation. Do it. When the washing time setting value has elapsed, the washing operation is continuously performed until the switching of the three-stage switch of the ice making / off / washing is performed (step S15).

At this time, if the user selects off through the three-stage switch of the ice making / off / washing during the washing operation, the washing operation is stopped, and when the ice making mode is selected from the operation mode of the large ice maker, the switch controller 11 ) To inform the control unit 60 of the setting of the ice making washing mode.

On the other hand, although not shown in the drawings for convenience of description, during other operations (ie, drainage, ice making, washing, etc.) except for the hot gas mode operation, in particular, an ice making operation such as the fifth step S5 or the thirteenth operation. While performing the washing operation as in step S13, if the ice ejection detection sensor 42 is open for a predetermined time (for example, about 30 seconds) with a continuous signal, the controller 60 does this. It is determined that the ice is filled in the ice container and the proximity sensor is continuously opened, and the operation of the large ice maker is stopped and the display driving unit 50 is controlled to turn on the full display lamp to display the fullness of the ice.

In this case, when the automatic release is desired, the power may be turned on / off or the three-stage switch of the switch control unit 11 may be turned off. When the ice is removed from the ice reservoir, the three-stage switch may be defrosted or restarted. Switching to cleaning starts the operation in the initial operating state.

Alternatively, it is in the continuous open signal state of the ice ejection detection sensor 42 for a predetermined time and then changes back to the short signal state, i.e., with the ice filled in the ice reservoir of the large ice maker, and the outlet is open. If the ice is removed and the discharge port is closed and maintained in the short signal state for a predetermined time (for example, about 3 minutes), the control unit 60 detects this and controls the display driving unit 50 to fill it up. After the display lamp is turned off and the error indication is removed, the fourth step S4 is performed again to perform the ice making operation again.

On the other hand, during operation of the compressor as described above, the fan temperature sensor 43 detects the temperature of the compressor and the pressure sensor 44 performs the operation of detecting the pressure of the compressor.

That is, the fan temperature sensor 43 detects the temperature of the compressor by using a thermistor and informs the controller 60, and the controller 60 applies the temperature value detected by the fan temperature sensor 43. In response, the fan motor operating temperature setting value (for example, 30 ° C.) stored in the EEPROM is read to determine whether the corresponding temperature value reaches the fan motor operating temperature setting value.

Accordingly, when the temperature value applied from the fan temperature sensor 43 reaches the fan motor operating temperature setting value, the controller 60 controls the fan motor driver 35 to drive the fan motor to overheat the compressor. To prevent it.

Then, when the temperature value applied from the fan temperature sensor 43 is reduced by a predetermined value (for example, -3 (° C.)) from the fan motor operating temperature setting value, for example, the applied temperature value is When the temperature falls to 27 ° C., the fan motor driving part 35 is controlled to stop the driving of the fan motor. Then, the compressor is repeated by checking the temperature value applied from the fan temperature sensor 43. Reduce the heat generated by the to moderate levels.

In addition, the pressure sensor 44 senses the pressure of the compressor and informs the controller 60 when the pressure is higher than the preset reference pressure, and the controller 60 detects the detection signal from the pressure sensor 44. Stops the operation of the large ice maker receives the input and controls the display drive unit 50 to light the warning indicator lamp warns that the pressure of the compressor has reached a dangerous level. Then, when the pressure detected by the pressure sensor 44 is lowered again, the control unit 60 checks this and switches to the initial operation mode to start the initial operation again, or the reset button of the pressure detection switch shown in FIG. 2. You can perform the initial operation again.

On the other hand, when an accumulation occurs, the input switch 13 is turned on to perform a forced hot gas mode operation. The controller 60 controls the forced hot gas time setting value stored in the EEPROM when the accumulation occurs (for example, , 80 seconds), the compressor driving unit 31, the solenoid valve driving unit 32 and the fan motor driving unit 35 in the output driving unit 30 is controlled to control the compressor and solenoid valves during the corresponding forced hot gas time setting value. And driving the fan motor to remove the accumulated ice and detecting the case where the user presses the input switch 13 again during the forced hot gas operation to stop the forced hot gas operation.

On the other hand, in the case where it is desired to change the control initial value set as described above, the user can switch the switch operation unit 12 in the input switch unit 10, that is, a switch having four functions of input, decrease, increase and item. The control initial value can be changed. After pressing the input switch to switch to the set value change mode, the item switch is pressed to select the item to be changed, and the increase and decrease switches are pressed to change the control initial value of the corresponding item.

For example, the drainage time setting value may be changed to 5 seconds, 15 seconds, 30 seconds, 40 seconds, and 45 seconds, and the forced hot gas time setting value may be changed at intervals of 10 seconds within a range of 30 seconds to 180 seconds. The fan motor operating temperature setting value may be changed at intervals of 1 (° C.) within a range of 20 ° C. to 50 ° C.

On the other hand, when the user presses the input switch 13 in the test mode to test the load of each component of the output driver 30, the controller 60 controls the output driver 30 to a predetermined time If the load test is repeated in the same order as the compressor, solenoid valve, pump motor, drain valve and fan motor at intervals (for example, 2 seconds), and the user presses the corresponding input switch 13 again during the operation of the test mode. Off to allow the test mode operation to stop. Thereafter, when the test mode operation ends, the controller 60 checks this, switches to the initial operation mode, and starts the initial normal operation again.

As described above, the present invention enables the rapid ice detection operation and error detection of the large ice maker through the ice detection sensor and the ice discharge detection sensor, so that many sensors for resupplying and checking the ice storage amount are not required, and the controller Minimize the motion control of the device, making it faster and more efficient to make large ice chunks. As a result, not only the various errors occurring during the operation of the large ice maker can be quickly processed, but also the error occurrence factor can be reduced and the unit cost of the product can be reduced. In addition, by performing the cleaning function according to the present invention can be more hygienic management of the ice sheet.

Claims (6)

Checking the ice making mode setting from the switch controller to sequentially drive the drain valve, the pump motor, and the solenoid valve at predetermined time intervals to perform drainage operation for a preset drainage time; Stopping the driving of the drain valve and the pump motor after the draining time has elapsed, and simultaneously driving the solenoid valve for a predetermined solenoid valve delay time so that ice can be formed on the ice sheet more quickly during the ice making operation; Driving the compressor after the solenoid valve delay time has elapsed and delaying the compressor for a predetermined pump motor delay time and then driving the pump motor to perform an ice making operation; During the deicing operation, after detecting a continuous short signal of the ice sensor for a predetermined time and confirming the ice generation, the pump motor is temporarily stopped and then the drain valve, the pump motor, and the solenoid valve are sequentially driven at predetermined time intervals. Performing a hot gas operation; During the hot gas operation, after detecting the instantaneous open signal of the ice discharge detection sensor to confirm the ice discharge, the driving of the drain valve and the pump motor is stopped, and the solenoid valve is continuously driven for the solenoid valve delay time, and then the ice making is performed. Vertical vertical ice maker operation control method comprising the step of performing the operation again. The method of claim 1, When there is no short signal of the ice sensor during the predetermined ice making mode operation time during the ice making operation, or when the short signal of the ice sensor is maintained during the predetermined ice sensor delay time during the hot gas operation, Determining an error and displaying an error after turning off all loads of the output driver; And detecting the three-stage switch off or power on / off of the switch controller to automatically release the error, and detecting the switching to the ice making or washing of the three-stage switch to start the operation in the initial operation state. Vertical ice maker operation control method characterized in that made. The method of claim 1, If there is no instantaneous open signal of the ice ejection detection sensor during the preset ice ejection sensor delay time during the hot gas operation, determining that the ice ejection detection sensor is faulty and turning off all the loads of the output driver to display an error Vertical ice maker operation control method characterized in that it further comprises a. The method of claim 1, Confirming the washing mode setting from the switch controller to sequentially drive the drain valve and the pump motor at predetermined time intervals to perform the washing operation for a preset drainage time; Stopping driving of the drain valve and the pump motor after the draining time has elapsed and delaying the driving of the pump motor for a predetermined pump motor delay time and then driving the pump motor for a predetermined time to supply water to the bucket; The washing operation and the water supply operation are repeatedly performed for a preset washing time, and when the washing time has elapsed, the washing operation and the water supply operation are repeatedly performed until the switching of the three-stage switch is turned off or the ice making is performed. Vertical ice maker operation control method characterized in that it further comprises a process. The method according to claim 1 or 4, When the open signal state of the ice ejection detection sensor is maintained for a predetermined time during the draining operation, the ice making operation, or the washing operation, it is determined that the ice is filled in the ice reservoir and the ice filling is displayed after all loads of the output drive are turned off. Process; Detecting the three-stage switch off or power on / off of the switch control unit to automatically release the ice filling, and detects the switch to the deicing or washing of the three-stage switch to start the operation to the initial operating state Vertical ice maker operation control method characterized in that made. The method according to claim 1 or 4, When the open signal state of the ice ejection detection sensor is maintained for a predetermined time during the draining operation, the ice making operation, or the washing operation, it is determined that the ice is filled in the ice reservoir and the ice filling is displayed after all loads of the output drive are turned off. Process; The ice discharge detection sensor is changed to the short signal state after the ice full display, and if the predetermined time elapses, removing the ice full display and performing the ice making operation again. How to control large ice makers.