JP2019078466A - Ice-maker - Google Patents

Abstract

To attain reduction of cost by reducing the number of components as further as possible in an ice-maker that alternately and iteratively executes an ice-making operation and a deicing operation.SOLUTION: An ice-maker 10 is configured to make ice by alternately and iteratively executing an ice-making operation and a deicing operation in an ice-making part 11. An electronic expansion valve of which the opening is adjusted by control of a control device 40 is adopted to an expansion valve 33 of a freezer 30 that cools the ice-making part 11, and an entrance part temperature sensor 37 and an exit part temperature sensor 38 are provided in a coolant entrance part 34a and a coolant exit part 34b of an evaporator 34 in the ice-making part 11. The control device 40 controls the opening of the expansion valve due to detected temperatures of the entrance part temperature sensor 37 and the exit part temperature sensor 38 while the ice-making operation is executed, and detects at least either ice-making is completed in the case of the ice-making operation or deicing is completed in the case of the deicing operation due to a detected temperature of at least one of the entrance part temperature sensor 37 and the exit part temperature sensor 38.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an ice making machine that repeatedly performs ice making operation and deicing operation alternately in an ice making unit to produce ice, and in particular, by controlling an expansion valve of a freezing apparatus that cools and heats the ice making unit The present invention relates to an ice making machine employing an electronic expansion valve whose opening degree is adjusted.

  Patent Literatures 1 and 2 disclose an ice making machine that alternately performs an ice making operation and a de-icing operation to produce ice. The ice making machine of Patent Document 1 operates the ice making unit which freezes ice making water, the water supplying unit which sends ice making water to the ice making unit, the freezing apparatus which cools and heats the ice making unit, the water feeding unit and the freezing apparatus. It has a control device to control. The control device of the ice making machine is an ice making operation in which ice making unit is frozen by cooling the ice making unit with a freezing device to produce ice, and ice made in the ice making unit by heating the ice making unit after the ice making operation. Control is performed so as to alternately execute the deicing operation to be released. A temperature sensor for detecting completion of ice making and deicing is provided at the central part of the ice making unit of the ice making machine, and the control device detects the completion of ice making based on the temperature detected by the temperature sensor. When the freezing start temperature is reached, a unit integrated value which is the product of the detected temperature of each unit time of the temperature sensor and the unit time is determined, and the addition total value obtained by adding this unit integrated value becomes a predetermined value or more. As a detection of the completion of deicing based on the temperature detected by the temperature sensor, the completion of deicing is detected when the temperature detected by the temperature sensor reaches a predetermined deicing completion temperature.

  The ice making machine of Patent Document 2 operates the ice making unit which freezes ice making water, the water supplying unit which sends ice making water to the ice making unit, the freezing apparatus which cools and heats the ice making unit, the water feeding unit and the freezing apparatus. It has a control device to control. The freezing apparatus of the ice making machine includes a compressor for compressing the refrigerant, a condenser for cooling and liquefying the refrigerant pumped from the compressor, an expansion valve for expanding the liquefied refrigerant liquefied in the condenser, and an expansion valve. There is an evaporator that vaporizes the liquefied refrigerant expanded by the valve to cool the ice making unit, a hot gas path for delivering hot gas from the compressor to the evaporator, and a hot gas valve interposed in the hot gas path As the expansion valve, an electronic expansion valve whose opening degree is adjusted by a control signal of the control device is adopted. In addition, the ice making unit is provided with an inlet temperature sensor and an outlet temperature sensor for detecting the temperature of the inlet and outlet of the refrigerant of the evaporator, and the opening degree of the electronic expansion valve is the inlet temperature sensor and the outlet It is controlled based on the temperature sensor difference.

JP, 2008-309403, A JP 10-339533 A

  In the ice making machine of Patent Document 1, the control device completes the ice making and the deicing based on the detected temperature of the temperature sensor for detecting that the ice making and the deicing provided in the ice making unit are completed. It detects that. When the electronic expansion valve is adopted for the expansion valve of the freezing apparatus like the ice making machine of patent document 1 like the ice making machine of patent document 1, the inlet temperature sensor of the refrigerant inlet and outlet of the evaporator for the ice making unit And an outlet temperature sensor to control the opening degree of the electronic expansion valve based on the temperatures detected by the inlet temperature sensor and the outlet temperature sensor. However, the ice making machine of Patent Document 1 is provided with a temperature sensor for detecting completion of ice making and de-icing in the ice making unit, and like the ice making machine of Patent Document 2, the refrigerant of the evaporator of the ice making unit If two more temperature sensors are provided at the inlet and outlet of the case, the three temperature sensors are provided in the ice making section, resulting in an increase in cost. An object of the present invention is to reduce the number of parts as much as possible to reduce the cost in an ice making machine that alternately and repeatedly executes an ice making operation and a deicing operation.

  MEANS FOR SOLVING THE PROBLEMS In order to solve the above problems, the present invention solves the above problems, an ice making unit which freezes ice making water to produce ice, a water supplying unit which sends ice making water to the ice making unit, a freezing apparatus which cools and heats the ice making unit, The refrigeration system includes a compressor for compressing the refrigerant, a condenser for cooling and liquefying the refrigerant pressure-fed from the compressor, and a liquefied refrigerant liquefied by the condenser. Interposed in an expansion valve to be expanded, an evaporator for evaporating liquefied refrigerant expanded by the expansion valve to cool an ice making part, a hot gas path for delivering hot gas from the compressor to the evaporator, and a hot gas path The controller has the expansion valve to expand the liquefied refrigerant which is pressure-fed from the compressor and liquefied by the condenser, and the vaporized liquefied refrigerant is vaporized by the evaporator. The ice making unit is cooled by heat, and the water making unit sends water from the water making unit. After the ice making operation of freezing the ice making water to produce ice and the ice making operation, the hot gas refrigerant sent from the compressor is delivered to the evaporator by opening the hot gas valve to heat the ice making unit, The de-icing operation to separate the ice from the ice making unit is alternately performed repeatedly, and the expansion valve adopts an electronic expansion valve whose opening degree is adjusted by the control of the control device, and the refrigerant of the evaporator in the ice making unit An inlet temperature sensor and an outlet temperature sensor are provided at each of the inlet and the outlet of the refrigerant, and the controller detects the temperatures detected at the inlet temperature sensor and the outlet temperature sensor while the ice making operation is being performed. An ice making machine for controlling the opening degree of the expansion valve based on the detected temperature of at least one of the inlet temperature sensor and the outlet temperature sensor; Is completed and de-icing There is provided a ice making machine, wherein the deicing during rolling is designed to add at least one of the detection of the completion of.

  In the ice making machine configured as described above, based on the detected temperature of at least one of the inlet temperature sensor and the outlet temperature sensor used to control the opening degree of the electronic expansion valve when performing the ice making operation, At least one of the completion of ice making in the ice making operation and the completion of the deicing in the deicing operation is detected, so that at least one of the ice making operation and the deicing operation is completed. It is not necessary to provide a temperature sensor for detection, and cost reduction can be achieved by reducing the number of parts of the ice making machine.

  In the ice making machine configured as described above, the control device determines that the ice making is completed during the ice making operation and the ice removal operation is performed based on the average temperature of the inlet temperature sensor and the outlet temperature sensor. It is preferable to detect at least one of the completion of the ice.

FIG. 1 is a schematic view of an ice maker according to the present invention. It is a block diagram of a control device.

  Hereinafter, an embodiment of an ice making machine of the present invention will be described using the drawings. As shown in FIG. 1, the ice making machine 10 closes a plurality of downward-opening ice making compartments 13 provided in the ice making unit 11 with a water plate 22 so as to be openable and closable. It is a so-called closed cell type ice making machine that jets and supplies water to produce ice. The ice making machine 10 produces ice by alternately executing an ice making operation in which ice making water is frozen in the ice making unit 11 and a deicing operation in which the ice frozen in the ice making unit 11 is removed from the ice making unit 11. The expansion valve 33 of the refrigeration system 30 for cooling and heating the ice making unit 11 adopts an electronic expansion valve whose opening degree can be adjusted by the control of the control unit 40.

  The ice making unit 11 is in the form of a shallow box having a horizontally-arranged lower surface opened, and a plurality of ice making compartments 13 are formed by the partition member 12. In addition, below the ice making unit 11, an ice storage 14 for storing the ice manufactured in each ice making chamber 13 is provided.

  The ice making machine 10 is provided with a water supply unit 20 for delivering ice making water to the ice making unit 11. The water supply unit 20 includes a water tray 22 integrally provided with an ice making water tank 21 at the lower part. The water tray 22 is tiltably supported between a closed position where the ice making unit 11 approaches to the lower side of the ice making unit 11 to close the ice making chamber 13 and an open position where the ice making unit 13 is released away from the lower side of the ice making unit 11 It is done. The water tray 22 is provided with an open / close mechanism 23 for tilting between the closed position and the open position, and the water tray 22 opens / closes the ice making chamber 13 of the ice making unit 11 by the open / close mechanism 23. The opening and closing mechanism 23 includes an actuator motor 23a, and tilts the water pan 22 between a closed position and an open position by driving the actuator motor 23a.

  The water supply unit 20 is provided with a water supply means 24 for supplying ice making water to the ice making water tank 21 and a water feeding pump 25 for injecting and making the ice making water in the ice making water tank 21 to the ice making chamber 13. The water supply means 24 includes a water supply pipe 24a connected to the ice making water tank 21 and a water supply valve 24b interposed in the water supply pipe 24a, and the ice making water sent from the water supply pipe 24a is the ice making water tank by opening the water supply valve 24b. 21 is supplied. In addition, the ice making water supplied to the ice making water tank 21 is jetted and delivered to the ice making small chamber 13 by the water feeding pump 25.

  The ice making machine 10 includes a freezing device 30 that cools and heats the ice making unit 11. The refrigeration unit 30 expands the low-pressure liquefaction by expanding the compressor 31 which compresses the refrigerant, the condenser 32 which cools and liquefies the refrigerant pressure-fed from the compressor 31, and the liquefaction refrigerant liquefied in the condenser 32. The expansion valve 33 used as a refrigerant | coolant and the evaporator 34 which vaporizes the liquefied refrigerant expanded with the expansion valve 33, and cools the ice making part 11 are provided. In the refrigeration apparatus 30, a compressor 31, a condenser 32, an expansion valve 33, and an evaporator 34 are annularly connected by a refrigerant pipe to constitute a refrigeration circuit. The expansion valve 33 employs an electronic expansion valve whose opening degree can be adjusted, and the opening degree is adjusted by a control signal of a control device 40 described later. The evaporator 34 is disposed in a meandering manner on the upper surface of the ice making unit 11, and the ice making unit 11 is cooled by heat of vaporization when the liquefied refrigerant passing through the evaporator 34 is vaporized.

  In addition, the refrigeration system 30 includes a hot gas pipe (hot gas path) 35 for supplying hot gas to the evaporator 34 when performing deicing operation. The hot gas pipe 35 connects the downstream of the compressor 31 and the upstream of the evaporator 34 so as to lead the hot gas from the compressor 31 to the evaporator 34. A hot gas valve 36 is interposed in the hot gas pipe 35, and the hot gas sent from the compressor 31 is led to the evaporator 34 through the hot gas pipe 35 by opening the hot gas valve 36. During the deicing operation, when the hot gas is introduced to the evaporator 34 by opening the hot gas valve 36, the inside of the ice making compartment 13 of the ice making unit 11 is heated by the hot gas, and the ice frozen in the ice making compartment 13 is deiced. Be done.

  In the ice making unit 11, an inlet temperature sensor 37 and an outlet temperature sensor 38 are provided at each of the refrigerant inlet 34a and the refrigerant outlet 34b of the evaporator 34. The inlet and outlet temperature sensors 37, Reference numeral 38 detects the temperatures of the refrigerant inlet 34 a and the refrigerant outlet 34 b of the evaporator 34 in the ice making unit 11. The inlet and outlet temperature sensors 37 and 38 are used not only for controlling the opening of the expansion valve 33 consisting of an electronic expansion valve when performing an ice making operation, but also complete the ice making when performing an ice making operation and It is used to detect the completion of deicing when performing deicing operation.

  The ice making machine 10 includes a control device 40. As shown in FIG. 2, the control device 40 includes an actuator motor 23a of the open / close mechanism 23, a water supply valve 24b, a water pump 25, and a compressor 31 of the refrigeration system 30. , A hot gas valve 36, and inlet and outlet temperature sensors 37, 38, respectively. The control device 40 has a microcomputer (not shown), and the microcomputer has a CPU, a RAM, a ROM and a timer (all not shown) connected respectively via a bus. The control device 40 performs an ice making program which repeatedly executes an ice making operation of freezing ice making water in the ice making unit 11 to produce ice and a deicing operation of making ice frozen in the ice making unit 11 by the ice making operation. Have.

  Next, the ice making program of the ice making machine 10 will be described. At the start of the ice making machine 10, the deicing operation is preliminarily carried out, and it is assumed that ice is not always left in the ice making compartment 13 of the ice making unit 11. In the deicing operation, the hot gas valve 36 is opened in a state where the compressor 31 is operated, and the water pan 22 is tilted to the open position by the actuator motor 23a of the open / close mechanism 23. The hot gas delivered from the compressor 31 is led to the evaporator 34 through the hot gas pipe 35 to heat the ice making compartments 13 of the ice making unit 11. When the average temperature of the inlet and outlet temperature sensors 37 and 38 reaches 5 ° C. or higher as a predetermined temperature for detecting completion of deicing, the control device 40 does not leave ice in the ice making compartment 13 of the ice making unit 11 That is, it is detected that deicing is completed, and the hot gas valve 36 is closed to end the deicing operation.

  After performing the deicing operation in advance in the ice making unit 11, the control device 40 repeatedly executes the ice making operation and the deicing operation in the ice making unit 11. In the ice making operation, the controller 40 tilts the water tray 22 to the closing position by the actuator motor 23a of the opening / closing mechanism 23 and opens the water supply valve 24b for a predetermined time to supply ice making water to the ice making water tank 21. Next, after a predetermined time has elapsed, the control device 40 closes the water supply valve 24b to end the water supply, and drives the water supply pump 25 to inject the ice making water in the ice making water tank 21 to each ice making chamber 13 of the ice making unit 11 Let

  In addition to the water supply from the water supply pipe 24a to the ice making water tank 21, the ice making unit 11 is cooled by the freezing device 30 by closing the hot gas valve 36 at the end of the deicing operation. Specifically, the refrigerant pressure-fed from the compressor 31 is liquefied by the condenser 32 and becomes a liquefied refrigerant, and the liquefied refrigerant is opened by the control device 40 based on the temperatures detected by the inlet and outlet temperature sensors 37, 38. The expansion valve 33 is adjusted to be a low pressure liquefied refrigerant, and the low pressure liquefied refrigerant is vaporized by the evaporator 34 to cool the ice making unit 11. The ice making water jetted out to the ice making chamber 13 by the water supply pump 25 is cooled and frozen in the ice making chamber 13 and the ice making water in the ice making water tank 21 gradually decreases. As detection of the completion of ice making based on the detection temperature of the inlet and outlet temperature sensors 37 and 38, the inlet and outlet temperature sensors 37 detected every unit time since the temperature of the ice making portion 11 reaches 0 ° C. The unit integrated numerical value which is the product of the average temperature and unit time of 38, 38 is determined, and when the addition total numerical value obtained by sequentially adding these unit integrated numerical values becomes the target integrated value, the control device 40 blocks ice in the ice making compartment 13 Is detected to complete the ice making, and the driving of the water pump 25 is stopped to end the ice making operation.

  In the deicing operation after the ice making operation, the control device 40 opens the hot gas valve 36 in a state where the compressor 31 is operated, and tilts the water tray 22 to the open position by the actuator motor 23a of the open / close mechanism 23. The hot gas delivered from the compressor 31 is led to the evaporator 34 through the hot gas pipe 35 to heat the ice making compartments 13 of the ice making unit 11. The temperature of the ice making unit 11 at the time of completion of ice making is approximately −20 ° C., but the ice separates from the inside of the ice making chamber 13 while the temperature of the ice making unit 11 gradually rises. When the average temperature of the inlet and outlet temperature sensors 37 and 38 reaches 5 ° C. or higher as a predetermined temperature for detecting completion of deicing, the control device 40 does not leave ice in the ice making compartment 13 of the ice making unit 11 That is, it is detected that deicing is completed, the hot gas valve 36 is closed, the deicing operation is ended, and the ice making operation is performed again as described above. In the ice making machine 10, block forming ice is produced in the ice making unit 11 by repeatedly performing the ice making operation and the deicing operation by the control device 40 as described above.

  In the ice making machine 10 configured as described above, the refrigeration system 30 includes a compressor 31 for compressing the refrigerant, a condenser 32 for cooling and liquefying the refrigerant pressure-fed from the compressor 31, and a condenser 32. An expansion valve 33 for expanding liquefied liquefied refrigerant, an evaporator 34 for vaporizing the liquefied refrigerant expanded by the expansion valve 33 to cool the ice making unit, and a hot gas for delivering hot gas from the compressor 31 to the evaporator 34 And a hot gas valve 36 interposed in the gas path 35. The control device 40 of the ice making machine 10 expands the liquefied refrigerant pressure-fed from the compressor 31 and liquefied in the condenser 32 with the expansion valve 33 and vaporizes the expanded liquefied refrigerant in the evaporator 34 The ice making unit 11 is cooled by the heat of vaporization, and the ice making operation of freezing the ice making water sent from the water supplying unit 20 by the ice making unit 11 to produce ice and the ice making operation open the hot gas valve 36 to open the compressor The hot gas refrigerant sent from 31 is sent to the evaporator 34 to heat the ice making unit 11, and the deicing operation for removing the ice from the ice making unit 11 is alternately repeated.

  In this ice making machine 10, an electronic expansion valve whose opening degree is adjusted by the control signal of the control device 40 is adopted as the expansion valve 33 of the freezing apparatus 30, and the refrigerant inlet 34a of the evaporator 34 and the refrigerant in the ice making unit 11 An inlet temperature sensor 37 and an outlet temperature sensor 38 are provided at each of the outlet 34b, and the controller 40 controls the inlet temperature sensor 37 and the outlet temperature sensor 38 while the ice making operation is being performed. The opening degree of the expansion valve 33 is controlled based on the detected temperature. In the ice making machine 10, the control device 40 makes the ice making based on the average temperature of the temperatures detected by the inlet and outlet temperature sensors 37, 38 used to control the opening degree of the expansion valve 33 during the ice making operation. While detecting the completion of ice making in operation, it was detected that deicing was completed in deicing operation.

  As detection of the completion of ice making based on the detection temperature of the inlet and outlet temperature sensors 37 and 38 in this embodiment, the temperature of the ice making unit 11 is used as the freezing start temperature and the average of the inlet and outlet temperature sensors 37 and 38 Determine the unit integration numerical value which is the product of the average temperature of the inlet and outlet temperature sensors 37 and 38 (average of two temperatures) detected every unit time since the temperature reached 0 ° C. and the unit time When the addition total value obtained by sequentially adding unit integrated values becomes the target integrated value, the control device 40 detects that block-shaped ice is formed in the ice making compartment 13 and ice making is completed.

  Further, as detection of completion of deicing based on the temperatures detected by the inlet and outlet temperature sensors 37 and 38 in this embodiment, the control device 40 detects the temperature detected by the inlet temperature sensor 37 and the outlet temperature sensor 38. When the average temperature of the detected temperatures (average of two temperatures) reaches 5 ° C. or higher as the predetermined temperature, it is detected that deicing is completed.

  As described above, using the inlet and outlet temperature sensors 37 and 38 provided to control the opening degree of the expansion valve 33, it is detected that the ice making operation is completed and the deicing operation is completed. Therefore, there is no need to separately provide a temperature sensor to detect that the ice making operation is completed and the deicing operation is completed, and the cost reduction can be achieved by reducing the number of parts of the ice making machine 10.

  In this embodiment, the control device 40 detects both completion of ice making and completion of deicing based on the temperature detected by the inlet temperature sensor 37 and the temperature detected by the outlet temperature sensor 38. The invention is not limited to this, and may detect only one of completion of ice making and completion of deicing. When only detecting the completion of deicing based on the temperatures detected by the inlet and outlet temperature sensors 37 and 38, the completion of ice making is detected based on the time of the ice making operation and the water level of ice water in the ice making water tank 21. Alternatively, when only the completion of ice making is detected based on the temperatures detected by the inlet and outlet temperature sensors 37, 38, the completion of deicing may be detected based on the time of the deicing operation. .

  In this embodiment, as detection of the completion of ice making, the control device 40 detects the average temperature and unit of the inlet and outlet temperature sensors 37, 38 detected every unit time from when the temperature of the ice making unit 11 reaches 0 ° C. Unit integrated numerical value which is the product of time is determined, and it is detected that ice making is completed when the addition total numerical value obtained by sequentially adding these unit integrated numerical values becomes the target integrated value, but the present invention is not limited thereto. When the average temperature of the section and outlet temperature sensors 37 and 38 is lower than the predetermined ice making completion temperature, the detected temperature of only one of the inlet and outlet temperature sensors 37 and 38 is lower than the predetermined ice forming completion temperature It may be detected that ice making is complete. In addition, in order to make each detection temperature of the detection temperature of the inlet temperature sensor 37 and the detection temperature of the outlet temperature sensor 38 and the inlet temperature sensor 37 or the outlet temperature sensor 38 approach the temperature of the central portion of the ice making unit 11 The correction may be made appropriately, and it may be detected that the ice making is completed based on the corrected temperature.

  In this embodiment, the control device 40 detects that the deicing is completed when the average temperature of the temperature detected by the inlet temperature sensor 37 and the temperature detected by the outlet temperature sensor 38 reaches 5 ° C. or higher as the predetermined temperature. However, the present invention is not limited to this, and it is detected that the deicing is completed when the detection temperature of only one of the inlet and outlet temperature sensors 37 and 38 becomes 5 ° C. or higher as the predetermined temperature. It is also good. In addition, in order to make each detection temperature of the detection temperature of the inlet temperature sensor 37 and the detection temperature of the outlet temperature sensor 38 and the inlet temperature sensor 37 or the outlet temperature sensor 38 approach the temperature of the central portion of the ice making unit 11 Correction may be made appropriately, and it may be detected that deicing has been completed based on the corrected temperature.

  In the ice making machine of this embodiment, a large number of ice making compartments 13 opened downward in the ice making unit 11 are closed freely openable and closable by the water tray 22, and the ice making water is jetted and supplied from the water tray 22 to each ice making compartment 13. The present invention is a so-called closed cell type ice making machine for producing dry ice, but the present invention is not limited to this, and a so-called open cell type ice making machine for making ice by injecting ice making water with the ice making chamber open. The ice making machine may be a flow down type ice making machine in which the ice making compartment is opened horizontally and the ice making water is allowed to flow down into the ice making compartment, or the ice making water is allowed to flow down the ice making plate which is vertically erected. It is also good.

  DESCRIPTION OF SYMBOLS 10 ... Ice making machine, 11 ... Ice making part, 20 ... Water supply part, 30 ... Refrigerating device, 31 ... Compressor, 32 ... Condenser, 33 ... Expansion valve, 34 ... Evaporator, 35 ... Hot gas path (hot gas pipe) , 36: hot gas valve, 37: inlet temperature sensor, 38: outlet temperature sensor, 40: controller.

Claims (2)

An ice making unit that freezes ice water to produce ice;
A water supply unit for supplying ice making water to the ice making unit;
A refrigeration unit for cooling and heating the ice making unit;
And a controller for controlling the operation of the refrigeration system.
The refrigeration apparatus includes a compressor for compressing a refrigerant, a condenser for cooling and liquefying a refrigerant pressure-fed from the compressor, an expansion valve for expanding a liquefied refrigerant liquefied by the condenser, and the expansion valve. An evaporator which vaporizes a liquefied refrigerant expanded by a valve to cool the ice making part, a hot gas path for delivering hot gas from the compressor to the evaporator, and a hot gas interposed in the hot gas path With a valve,
The control device expands the liquefied refrigerant pressure-fed from the compressor and liquefied in the condenser with the expansion valve and heats the ice by the heat of vaporization of the expanded liquefied refrigerant in the evaporator. The ice making operation of cooling the part and freezing the ice making water sent from the water feeding part in the ice making part to produce ice and opening the hot gas valve after the ice making operation is sent from the compressor A hot gas refrigerant is delivered to the evaporator to heat the ice making unit, and an ice removing operation for separating the ice from the ice making unit is alternately performed repeatedly.
As the expansion valve, an electronic expansion valve whose opening degree is adjusted by control of the control device is adopted, and an inlet temperature sensor is provided at each of the refrigerant inlet and outlet of the evaporator in the ice making unit; An outlet temperature sensor is provided, and the controller controls the degree of opening of the expansion valve based on the temperatures detected by the inlet temperature sensor and the outlet temperature sensor when performing the ice making operation. It is an ice making machine that
The control device is configured to complete ice making in the ice making operation and complete deicing in the deicing operation based on detected temperatures of at least one of the inlet temperature sensor and the outlet temperature sensor. An ice making machine characterized in that at least one of the detections is made. In the ice making machine according to claim 1,
The control device is configured to complete the ice making in the ice making operation and the deicing in the ice removal operation based on an average temperature of the inlet temperature sensor and the outlet temperature sensor. An ice maker characterized in that at least one of the detections is performed.

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