JPH10281604A - Ice-making device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent generation of a condition where a water dish stops while shifting to an ice-making process in advance by performing a recovery operation without stopping the water dish until an actuator switch detects an ice-making position when shifting to the ice-making process. SOLUTION: An ice-making timer TM, a water supply timer WTM, a pump motor PM, and a fan motor FM are connected between a break terminal (b) of a contact R31 of a relay R3 and a power supply bus Y. After having left ice, a recovery thermo TH is connected to a recovery terminal side due to the temperature increase of a cooler, a deceleration motor starts to rotate reversely when sides A and B of an actuator switch are switched to the side of a make terminal (m) and the water dish starts to rise. In this case, the ice- making timer TM is connected between the break terminal (b) of the contact at the side B of the actuator switch and a power supply bus and is directly connected from an operation switch that is not directly related to the operation state of the recovery thermo TH, thus raising the water dish continuously and preventing a hot gas process from being started during the ascent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ice making apparatus in which a water tray which can be tilted and retracted is provided below an ice making chamber, and ice is made while fountain is sprayed from a fountain hole formed in the surface of the water tray into the ice making chamber.

[0002]

2. Description of the Related Art An ice maker of this type has a water tray that is tiltably supported with respect to an ice maker having an ice chamber opened downward, and closes an opening of the ice chamber from below during ice making. The tilting drive is performed so as to open the opening of the ice chamber during deicing. In addition, a fountain hole is formed in the water tray for ejecting the compressed water to the ice chamber by using a pump. Therefore,
At the time of ice making, water is blown out into the ice chamber, and the ice making chamber is cooled by a cooling device using a heat pump, and when the ice making is completed after a predetermined time, the water tray is tilted to open the opening of the ice chamber. Then, the ice making room was heated by using hot gas of a cooling device to drop the ice from the ice room, and the obtained ice was stored in an ice storage. The above operations are roughly divided into an ice making step, a de-icing step, and an ice storage step, and these steps are repeatedly executed using a sequence control device.

[0003]

The above-described sequence control apparatus comprises an ice making timer for setting an ice making time, a thermo means for switching operation according to the temperature of an ice making room, and a water tray at an ice making position or a deicing position. And an ice storage sensor for detecting ice storage in the ice storage, and repeatedly executes the ice making process, the deicing process and the ice storage process based on switching of the contacts of these various switches. Was.

However, in this conventional sequence control apparatus, the ice making timer is started on condition that the thermomechanical unit detects the low temperature of the ice making chamber. Therefore, during the return of the water tray to move from the deicing step to the ice making step. If the temperature of the outside air is low, the thermomechanical unit detects a low temperature, the water tray is stopped at that time, the ice making chamber is reheated by hot gas, and the water tray is moved to the ice making position.

[0005] Therefore, there is a problem in that an unnecessary hot gas heating step is performed while the water tray is being raised, so that the ice making chamber is warmed and the ice making capacity is reduced. Further, in the above-described sequence control device, since the water tray controls the ice making chamber to be closed during the ice storage step, the water comes into contact with the shaft portion of the pump motor that feeds the water into the water tray, and the water enters the pump motor. There is also a problem that the shaft portion of the pump motor does not rotate due to rust and the like due to dew condensation.

A first object of the present invention is to prevent the water tray from stopping during the ice making process and to improve the ice making ability. A second object of the present invention is to prevent water from coming into contact with the shaft of the pump motor in the ice storage process, and to improve the life of the pump motor.

[0007]

According to a first aspect of the present invention, there is provided a cooler having an ice-making chamber, a water tray for opening and closing the opening of the ice-making chamber of the cooler, and tilting the water tray. A driving mechanism, a pump for supplying ice-making water to the ice-making chamber, a refrigeration cycle having a hot gas valve for cooling the ice-making chamber and heating the ice-making chamber, and an ice-making step, a de-icing step, and an ice storage step. In the ice making device comprising the water tray drive mechanism, the pump and a sequence control device for controlling the refrigeration cycle, the sequence control device switches according to the ice making timer for setting an ice making time and the temperature of the ice making room. An operation switch, an actuator switch for detecting whether the water tray is in an ice making position or a de-icing position, and an ice storage sensor for detecting ice storage in an ice storage. It is characterized in that the eta switch to backward operation without stopping the water tray until detecting the ice making position.

According to a second aspect of the present invention, there is provided a cooler having an ice making chamber, a water tray for opening and closing the opening of the ice making chamber of the cooler, a drive mechanism for tilting the water tray, and the ice making machine. A pump for supplying ice-making water to the chamber, a refrigeration cycle having a hot gas valve for cooling the ice-making chamber and heating the ice-making chamber, and a driving mechanism for the water tray in accordance with the ice-making step, the de-icing step and the ice storage step An ice making device comprising: the pump and a sequence control device that controls the refrigeration cycle.
The sequence control device includes an ice making timer for setting an ice making time, a thermo means for switching operation according to the temperature of the ice making room, an actuator switch for detecting whether a water tray is in an ice making position or a deicing position, and ice storage in an ice storage. And the ice tray is always tilted when executing the ice storage step.

The invention described in claim 3 is the first or second invention.
The ice making step includes closing the hot gas valve to drive the refrigeration cycle and a pump, and the deicing step opens the hot gas valve to drive the refrigeration cycle, and the ice storage step. Is characterized in that the ice from the ice making room is dropped on a water tray, and the dropped ice is stored in an ice storage.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on preferred embodiments. FIG. 2 is a partially cutaway side view of an ice making machine main part A of the ice making device (cell type ice making machine) according to the present embodiment. 2, reference numeral 1 denotes a cooler, 2 denotes an evaporating pipe, 3 denotes a fountain hole, 4 denotes a return hole, 5 denotes a water dish, 6 denotes a water tank, 7 denotes a water pipe, 8 denotes a distribution pipe, 9 denotes a circulation pump,
Is a deceleration motor, 13 is a sprinkler, 14 is a water level detecting device, 1
5 is a support beam, 16 is a mounting plate, 17 is a drive cam, 18 is a coil spring, 19 is a rotating shaft, 20 is a water level switch, and 20 is an actuator switch.

In the cooler 1, a large number of ice-making chambers 1A are formed which open downward, and an evaporating pipe 2 of a heat pump type cooling device is disposed on an outer surface of an upper wall thereof. The water tray 5 is supported so as to be tiltable below the cooler 1 around the rotation shaft 19, and closes each ice making chamber 1A from below at a horizontal position. A fountain hole 3 and a return hole 4 are provided on the surface of the water tray 5 at a position facing each ice making chamber 1A. Further, a water tank 6 is fixed to the water tray 5, and water is supplied from the sprinkler 13 until a preset time elapses.

The water in the water tank 6 is supplied from the fountain hole 3 through the water supply pipe 7 and the distribution pipe 8 by the circulation pump 9 to the ice making chamber 1A.
Squirted into. At the same time, by cooling the cooler 1 with the evaporating pipe 2, ice is produced in the ice making chamber 1A. Of the water spouted from the fountain hole 3, surplus water without being iced is collected into the water tank 6 from the return hole 4. Water dish 5
Of the high-speed reduction motor 10 capable of normal and reverse rotation,
The operation is performed by a first arm 17A of a driving cam 17 attached to the output shaft and a coil spring 18 connected between the end of the driving arm 17 and the side of the water tray 5.

When ice is produced in the ice making chamber 1A, the deceleration motor 10 rotates forward, the first arm 17A rotates counterclockwise, and the water tray 5 gradually tilts downward. At this time, hot gas (high-temperature, high-pressure gas refrigerant) is stored in the evaporation pipe 2.
, And the ice is separated from the wall of the ice making chamber 1A and falls downward. As shown by a dashed line in FIG. 2, when the water tray 5 is at the lower limit opening position where the water tray 5 is tilted open, the second arm 17B extending in the opposite direction to the first arm 17A contacts the actuator switch 20 and The contact of the switch 20 is switched to the return side.

When the contact of the actuator switch 20 is switched to the backward movement side, the speed reduction motor 10 rotates in the reverse direction and the first
Arm 17A rotates clockwise. At the same time, the water tray 5 gradually rotates upward, and when the water tray 5 reaches the horizontal closed position, the first arm 17A is turned on by the actuator switch 2.
The contact of the actuator switch 20 is switched to the tilting side when it comes into contact with 0, and the operation of the deceleration motor 10 is stopped. Ice making is performed again in this state, and thereafter, similar steps are sequentially repeated.

FIG. 3 is a system diagram of a refrigeration cycle B of a cooling device for cooling the ice making chamber 1A. This refrigeration cycle has an evaporator 31. FIG. 2 shows the evaporator 31 having a cooling function.
It is comprised including the evaporation pipe 2 inside. In response to the operation of the motor CM, the compressor 32 draws refrigerant from the evaporator 31 through the pipe P1, compresses the refrigerant, and converts the refrigerant into a high-temperature and high-pressure compressed refrigerant.
2 to the condenser 33. The condenser 33 condenses the compressed refrigerant under the air-cooling action of the air-cooling fan 34 and supplies the compressed refrigerant into the receiver 35 through the pipe P3. The air cooling fan 34 exhibits a cooling function according to the operation of the motor FM. The receiver 35 separates the condensed refrigerant from the condenser 33 into gas and liquid, and supplies only the liquid phase component as a circulating refrigerant to the expansion valve 36 through the pipe P4. The expansion valve 36 expands the inflow refrigerant and supplies it to the evaporator 31 through the pipe P5 as a low-temperature and low-pressure expansion refrigerant.

The hot gas valve 37 is a normally closed solenoid valve. The hot gas valve 37 sends compressed refrigerant from the compressor 32 upstream of the pipe P2, downstream of the pipes P6, P7 and P5. To the evaporator 31. This means that the evaporator 31 exerts a heating function according to the incoming compressed refrigerant. FIG. 1 is a circuit diagram showing a configuration of a sequence control device C for controlling the ice making machine main unit A and the freezing cycle B described above.

In FIG. 1, a compressor motor CM, an ice storage sensor BSW,
Ice making timer TM, water supply timer WTM, pump motor P
M, fan motor FM, hot gas valve HV, deceleration motor GM, water supply valve WV, and relays R1 to R4 are connected. The operation switches M1 and M2 are inserted in the power bus X, and the power bus X1 is a movable contact terminal (hereinafter, referred to as a movable terminal) c of the operation switch M1 on the power side.
And the load-side bus X2 is connected to the movable terminal c of the operation switch M2. A fixed contact terminal (hereinafter, referred to as a fixed terminal) a of the operation switch M1 is a movable terminal c of the contact R11 of the relay R1, one end of the ice storage sensor BSW, a movable terminal c of the contact R21 of the relay R2, and a contact of the relay R4. It is connected to the movable terminal c of the contact R42. The fixed terminal a of the operation switch M2 is a contact R42 of the relay R4.
Make contact terminal (hereinafter referred to as make terminal) m,
It is connected to a break contact terminal (hereinafter referred to as a break terminal) b of a contact R21 of the relay R2.
The relay R1 is connected between the break terminal b of the contact R21 of the relay R2 and the power supply bus Y. Relay R1
The make terminal m of the contact R11 is connected to the input terminal R of the compressor motor CM and one ends of the phase-advancing capacitors C1 and C2. The other ends of the phase-advancing capacitors C1 and C2 are connected to input terminals S and C of the compressor motor CM via a starting relay SR. The input terminal C of the compressor motor CM is connected to the power supply bus Y via the overload relay OL. The other end of the ice storage sensor BSW is connected to the power supply bus Y. Contact R of relay R2
The make terminal m of the ice storage detection relay contact BSW1 is connected to the make terminal m of the ice storage detection relay contact BSW1.
A relay R2 is connected between the movable terminal c of W1 and the power supply bus Y.

On the other hand, a movable terminal c of a return thermo TH which performs a return operation according to the temperature of the ice making chamber is connected to the load side power supply bus X2, and a return terminal L thereof is connected to a movable terminal c of a contact R41 of a relay R4. ing. Contact R41 of relay R4
Is connected to the make terminal m of the contact R21 of the relay R2. The return terminal H of the return thermo TH is connected to the movable terminal c of the contact R32 of the relay R3 and the movable terminal c of the contact TM1 of the ice making timer relay. An actuator switch 21 (FIG. 2) is connected to the load-side power supply bus X2.
The movable terminal c of the contact B on the B side, the movable terminal c of the ice release switch DS, and the make terminal m of the contact R33 of the relay 3 are connected to each other.

The break terminal b of the contact B on the side of the actuator switch 21 includes a movable terminal c of the contact R31 of the relay R3, a movable terminal c of the water tray switch WS, and a break terminal b of the contact WTM1 of the water supply timer WTM. It is connected. An ice making timer TM and a water supply timer WT are provided between the break terminal b of the contact R31 of the relay R3 and the power supply bus Y.
M, a pump motor PM having a phase advance capacitor C3,
The fan motor FM is connected and the contact R31 of the relay R3
Make terminal m is in a floating state. A relay R3 and a hot gas valve VS are connected between the make terminal m of the water dish switch WS and the power supply bus Y, and the make terminal m of the water dish switch WS is connected to the make terminal m of the ice separation switch DS and the relay. The make terminal m of the contact R32 of R3, the make terminal m of TM1 of the ice making timer TM, and the movable terminal c of the A side contact of the actuator switch 21 are connected. The make terminal m of the A-side contact of the actuator switch 21 is in a floating state.

A relay R4 is connected between the make terminal m of the B side contact of the actuator switch 21 and the power supply bus Y, and the make terminal m of the B side contact of the actuator switch 21 is a movable terminal c of the contact R33 of the relay R3. It is connected to the. A capacitor C4 for phase advance is connected between the break terminal b of the contact R33 of the relay R3 and the break terminal b of the A-side contact of the actuator switch 21, and the break terminal b of the contact R33 of the relay R3 and the actuator switch 21 are connected. Is connected to different input terminals of the reduction motor GM. The other input terminal of the speed reduction motor GM is the power bus Y
It is connected to the.

The make terminal m of the contact R34 of the relay R3 is connected to the break terminal b of the A-side contact of the actuator switch 21. The contact R of this relay R3
The 34 break terminal b is the contact WTM of the water supply timer WTM.
1 movable terminal c. Contact R of relay R3
A water supply valve W is provided between the movable terminal c and the power supply bus Y.
V is connected.

The operation of the sequence control device shown in FIG. 1 will be described below. First, when the temperature of the ice making chamber is low, the connection state of the return thermo TH is opposite to that shown in the drawing, that is, the movable terminal c and the return terminal H are connected. If the ice storage sensor BSW is in a state where ice can be stored in an ice storage (not shown) provided below the water tray 5, a contact BSW1 is provided.
Is opened, and the contact BSW1 is closed when the ice storage is full. Here, it is assumed that ice is stored in the ice storage. In this state, the operation switch M
When M1 and M2 are turned on, the movable terminal c and the fixed terminal a are respectively connected, whereby the relay R1 is excited and the contact R11 is closed. The compressor motor CM is started by closing the contact R11.

When the compressor motor CM is started, the starting relay SR first supplies a leading winding current to both the capacitors C1 and C2 to increase the torque, and then allows the leading winding current to flow only by the capacitor C1. Overload relay O
L is opened when the current value exceeds a set value to protect the compressor motor from overcurrent. Operation switches M1, M2
Is turned on, the power supply buses X1 and X2 are connected via the contact R21.
Are connected. When the power supply voltage is supplied to the power supply bus X2, the B-side contact of the actuator switch and the relay R3
Making timer TM, water supply timer WT via contact R31 of
M, the pump motor PM and the fan motor FM are started.

In this case, the water supply timer WTM operates instantaneously,
The water supply timer WT has a time-return type contact WTM1.
Contact WTM1 from the start of M until the set time elapses
Is closed, the water supply valve WV is excited via the B side contact of the actuator switch, the water supply timer contact WTM1, and the contact R34 of the relay R3, and the water supply timer contact WTM
Water is supplied to the water tank until 1 returns to the illustrated state. The water stored in the water tank is supplied to the ice making chamber of the water tray by the pump motor PM. At this time, since the refrigerating cycle has also been started, the cooling of the ice making chamber by the evaporator 31 is started.

The ice making timer TM is connected to a W sensor for detecting the temperature of the water and a C sensor for detecting the temperature of the condenser 33. When the water temperature drops to a predetermined value and the condenser 33 rises to the predetermined temperature. Then, the ice making timer TM starts the timing operation. In this manner, when the ice making is performed and the set time of the ice making timer TM elapses, the contact TM1 is closed and the relay R3 is excited. When the relay R3 is excited, it closes its own contact R32 and keeps itself until the return thermo TH returns to the L side. During the self-holding of the relay R3, the contact R31 is switched to the make terminal m, and the ice making timer TM,
The power supply to the water supply timer WTM, the pump motor PM, and the fan motor FM is cut off, and each stops. Also,
During the self-holding of the relay R3, the contact R33 is switched to the make terminal m to excite the relay R4. When the relay R4 is excited, the contact R41 contacts the contact B of the ice storage sensor.
SW1 enables excitation of relay R2. That is, it is possible to detect that the ice storage is full. When the relay R4 is excited, the contact R42 forms an excitation circuit for the relay R1. When the ice storage is full, the contact BSW1 is closed and the relay R2 is excited, and the relay R2 is held by the contact R21. During the self-holding of the relay R2, the excitation circuit of the relay R1 is opened and tries to return, but an alternative excitation circuit is formed by the contact R42, and the operation of the compressor motor CM is continued.

On the other hand, during the self-holding of the relay R3, the hot gas valve HV is also continuously excited, and the high-temperature gas refrigerant discharged from the compressor motor CM is supplied to the evaporator through the hot gas valve HV to heat the ice making chamber. . Further, during self-holding of the relay R3, the speed reduction motor GM is connected via the contact R32 and the A-side contact of the actuator switch.
And the water tray is lowered. That is, while the water tray is descending, the heating operation of the ice making room by the hot gas is performed at the same time, and the ice falls into the ice storage. Since the contact R34 is connected to the make terminal m during self-holding of the relay R3, the water supply valve is excited to remove ice adhering to the surface of the water dish and prepare for the next ice making. Further, regardless of the return of the return thermostat, the ice release switch DS is closed by the lowering of the water tray to form an energizing path for the deceleration motor GM until the water tray reaches the predetermined tilt lower limit position. Keep driving.

Next, when the ice removal is completed, the temperature of the cooler rapidly rises, and the return thermo TH returns to the state shown in the figure. Further, when ice is accumulated in the ice storage and the ice storage sensor detects that the ice storage is full, the contact BSW1 is closed, and when this is closed, the relay R2 is operated, and the contact R21 is switched to the m side, and the ice is removed. Power supply bus X2 is shut off until removed. As a result, the device connected to the power bus X2 returns to the original state, and the actuator switch A
The side and the side B are switched to the make terminal m side opposite to the illustrated side.

In this way, when the temperature of the cooler rises, the return thermo TH is connected to the return terminal L shown in the figure, and the A and B sides of the actuator switch are switched to the make terminal m. A capacitor C4 is switched and connected to the two windings, and the speed reduction motor GM
Starts reverse rotation. This causes the water tray to start rising.
Thereafter, the raising of the water tray is completed, and the A side and the B side of the actuator switch are switched to the illustrated state.
When the state of the return thermo TH is switched from the connection state of CL to the state of CH, via the contact R31 of the relay R3,
Ice making timer TM, water supply timer WTM, pump motor PM
Then, the fan motor FM is started, and the process proceeds to the next ice making process.

In the embodiment shown in FIG.
The problem of FIG. 5 is solved as follows. FIG. 5
Here, the same parts as those in FIG. 1 are denoted by the same reference numerals. In the conventional sequence control device C, the ice making timer TM is not connected between the break terminal b of the contact R31 of the relay R3 and the power supply bus Y as in the present embodiment, and as shown in FIG. It is connected between the TH return terminal H and the power supply bus Y. Therefore, when the state of the return thermo TH is switched from the connection state of CH to the connection state of CL after the ice falls at a low outside temperature and the water tray is rising, the CH, the circuit A, and the actuator switch are switched. The relay R3 is energized through the make terminal m of the A side contact and the circuit B. Then, the contact R33 of the relay R3 is switched to the make terminal m, the power to the deceleration motor GM is cut off, and the water tray stops. At the same time, the hot gas valve HV is energized via the CH of the return thermo TH, the circuit A, the make terminal m of the A side contact of the actuator switch, and the circuit B, so that the ice making chamber is reheated (hot gas process). . Then return thermo TH
When the state is switched from the CL connection state to the CH connection state, control is performed so that the deceleration motor GM is energized again, the water tray returns to the horizontal closed position, and the process proceeds to the ice making process. Is done.

On the other hand, according to the embodiment shown in FIG. 1, the ice making timer TM includes the water supply timer TM and the pump motor P.
M and the fan motor FM are connected between the break terminal b of the B-side contact of the actuator switch and the power supply bus Y, that is, the operation switch is directly connected to the operation switch which is not directly related to the operation state of the return thermo TH. In addition, the water tray rises continuously, and the hot gas process enters during the rise, and the problems of the conventional apparatus, such as a decrease in ice making capacity, are solved.

FIG. 4 shows a control circuit diagram of another embodiment.
According to this embodiment, the contact R31 of the relay R3 is different from the contact R4 of the relay R4 when compared with the embodiment shown in FIG.
3 in that the contact R42 of the relay R4 is replaced by a contact R35 of the relay R3. FIG.
In the embodiment shown in FIG. 5, the problem of the conventional sequence controller C (FIG. 5) is solved as follows. In the conventional sequence control device C, when the water tray is in the horizontal closed state and the A-side contact and the B-side contact of the actuator switch are switched to the fixed contact b shown in the drawing, even if the power supply to the relay R4 is cut off. The ice storage process was started with the relay R2 being held by itself. That is, during the ice storage process, the water tray is always horizontally closed, so that the shaft portion of the pump motor that feeds water into the water tray from the beginning to the end of the ice storage process is in contact with the water. The prolonged time for which the shaft portion of the pump motor comes into contact with water means that the inside of the pump motor is condensed and rot or the like is likely to cause the pump motor to become unrotatable.

According to the present embodiment, when the water tray is opened and at the predetermined tilt lower limit position, the contact of the water tray switch W2 is switched to the contact b, the energization of the relay R3 is released, and the relay R3 is released.
The contact R35 of No. 3 is opened, and the relay R2 self-holds and enters the ice storage process. That is, during the ice storage process, the water tray is always at the tilt lower limit position, so that the inconvenience that the shaft portion of the pump motor that feeds water to the water tray from the beginning to the end of the ice storage process is in contact with the water is eliminated. Therefore, rust and the like on the shaft portion hardly occur, and the life of the pump motor can be extended. The description of the contact R43 of the relay R4 is omitted because it is not directly related to the present embodiment.

[0033]

According to the present invention, when shifting to the ice making process, the water tray is moved back without stopping until the actuator switch detects the ice making position, so that the hot gas process is started while the water tray is being raised. This eliminates the problem of the conventional apparatus that the ice making capacity is reduced.

Further, since the water tray is always tilted at the time of executing the ice storage step, the inconvenience that the shaft portion of the pump motor for feeding water into the water tray from the beginning to the end of the ice storage step is in contact with the water is eliminated. You. Therefore, rust and the like on the shaft portion are less likely to occur, and the life of the pump motor can be extended.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing a configuration of a sequence control device of one embodiment of a cell type ice maker according to the present invention.

FIG. 2 is a partially cutaway side view of a main body of one embodiment of the cell type ice making machine according to the present invention.

FIG. 3 is a refrigeration cycle system diagram of a cooling device of one embodiment of the cell type ice maker according to the present invention.

FIG. 4 is a circuit diagram showing a configuration of a sequence control device according to another embodiment.

FIG. 5 is a circuit diagram showing a configuration of a conventional sequence control device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooler 5 Water tray 6 Water tank 9 Circulation pump 10 Reduction motor (GM) 20 Actuator switch 31 Evaporator 32 Compressor 33 Condenser 36 Expansion valve 37 Hot gas valve (HV) CM Compressor motor BSW Ice storage sensor TM Ice timer WTM Water supply timer WV Water supply valve

Claims (3)

[Claims] 1. A cooler having an ice making chamber, a water tray for opening and closing an opening of the ice making chamber of the cooler, a driving mechanism for tilting the water tray, and supplying ice making water to the ice making chamber. A pump, a refrigeration cycle having a hot gas valve for cooling the ice making chamber and heating the ice making chamber, a driving mechanism for the water tray according to an ice making step, a deicing step and an ice storage step, the pump and the refrigeration cycle. An ice making device comprising: a sequence control device for controlling an ice making time; an ice making timer for setting an ice making time; a thermomechanical device for performing a switching operation according to a temperature of the ice making room; An ice switch for detecting an ice position; and an ice storage sensor for detecting ice storage in an ice storage, wherein the actuator switch detects the ice making position when the process proceeds to the ice making process. In ice making device, characterized in that for backward operation without stopping the water tray. 2. A cooler having an ice-making chamber, a water tray for opening and closing the opening of the ice-making chamber of the cooler, a drive mechanism for tilting the water tray, and supplying ice-making water to the ice-making chamber. A pump, a refrigeration cycle having a hot gas valve for cooling the ice making chamber and heating the ice making chamber, a driving mechanism for the water tray according to an ice making step, a deicing step and an ice storage step, the pump and the refrigeration cycle. An ice making device comprising: a sequence control device for controlling an ice making time; an ice making timer for setting an ice making time; a thermomechanical device for performing a switching operation according to a temperature of the ice making room; An ice storage sensor that detects an ice storage in an ice storage, and an actuator switch that detects an ice position, wherein the water tray is always tilted when the ice storage step is performed. Icing system. 3. The ice making step includes closing the hot gas valve to drive the refrigeration cycle and the pump, and the deicing step opens the hot gas valve to drive the refrigeration cycle. The ice making device according to claim 1 or 2, wherein the ice from the ice making room is dropped on a water tray, and the dropped ice is stored in an ice storage.