JPH05296624A - Automatic ice maker - Google Patents

Abstract

PURPOSE:To enable an ice maker provided in a refrigerator and having an ice making tray to be rotated by a driving means to manufacture tasty ice of high transparency, by a method wherein at a time of ice making, the driving means is operated to swing the ice making tray within a prescribed range of angle. CONSTITUTION:When ice is made, first cool water in a water supply tank 18 is supplied by a prescribed amount by a water supply pump 22 through a water supply pipe 23 into an ice making tray 13. On the other hand, cool air cooled by a cooler is supplied by a fan 9 into a bottom part of the ice making tray 13 to make ice in the ice making tray 13. At this time, a motor in a driving means 11 is driven in one direction by a prescribed time to rotate the ice making tray 13 by a prescribed angle (larger than 15 deg. and smaller than 30 deg.) from a horizontal position. Then the motor is driven in the reversed direction to rotate the ice making tray 13 by the prescribed angle from the horizontal position in the reversed direction. By repeating this swinging motion of the ice making tray 13, bubbles are made to float up all together on a freezing surface before taken into ice and then releasing into the atmosphere, whereby ice of high transparency can be made.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic ice making device which automatically prepares transparent ice for a refrigerator or the like.

[0002]

2. Description of the Related Art Conventionally, in household refrigerators and the like,
The water supplied from the water supply device is stored in an ice tray to make ice,
2. Description of the Related Art An automatic ice making device in which a driving device rotates and inverts an ice tray after ice making to remove ice is widely used.

However, ice has a property of not incorporating a gas component in its crystal lattice, and when water freezes, the gas component dissolved in water is discharged out of the crystal lattice of ice. Therefore, in such an automatic ice making device, a gas component dissolved in water when ice is produced becomes bubbles on the freezing surface, and the bubbles are taken into the ice before rising due to buoyancy. Therefore, there is a problem in that the central portion becomes cloudy and becomes opaque and has an unsatisfactory taste, and the ice does not become organoleptically suitable for beverages such as whiskey and water.

Therefore, transparent ice is desired, and an apparatus for producing transparent ice is disclosed in, for example, Japanese Patent Laid-Open No. 12217/1990.
The form shown in Japanese Patent No. 8 has been proposed. With reference to FIG. 31 below, a conventional example (Japanese Patent Laid-Open No. 12217/1990)
No. 8) will be described.

Reference numeral 1 is an ice tray, 2 is a partition plate installed inside the ice tray, 3 is a shaft for swingably supporting the ice tray 1, 4 is one end of the shaft, and forward and reverse are repeated to make the ice tray. 1 is a motor that swings.

The operation of this conventional automatic ice making device will be described with reference to FIG. When water is put in the ice tray 1 and the ice tray 1 is placed in a freezer and the motor 4 is driven, the ice tray 1 swings.
When the freezing of the water in the ice tray 1 starts, the gas component dissolved in the water when the ice is generated becomes bubbles on the freezing surface and is likely to be taken into the ice, but the water in the ice tray 1 shakes. As it is moved, the bubbles are agitated and diffused, and the transparency of the ice improves.

[0007]

However, in such a conventional automatic ice making device, since the optimum swing angle is unclear, the swing effect cannot be sufficiently obtained, and the bubbles cannot be sufficiently stirred and diffused. Therefore, there was a problem that perfect transparent ice could not be made.

Further, since the rocking is always performed during ice making, and the rocking water has a property of being hard to freeze, there is a problem that the ice making time becomes long.

Further, since the rocking motor is constantly rocked during ice making, the energizing time of the rocking motor is very long, and the motor has no durability.

Further, since ice formation progresses while rocking, the shape of the ice deforms sharply in a direction away from the rocking support shaft, resulting in an unsightly appearance and easy cracking during ice breaking.

Further, when the freezing compartment door or the ice making compartment door is vigorously closed when the maximum angle during swinging is reached, the water in the ice making tray further jumps up, and water is spilled or spilled from the ice making tray. There is a problem that the movable part freezes and causes a malfunction.

The present invention solves the above-mentioned conventional problems, and it is a first object of the present invention to provide an automatic ice making device which produces ice with high transparency and good taste.

A second object of the present invention is to provide an automatic ice making device having a short ice making time. A third object is to provide an automatic ice making device in which the motor energization time is shortened to ensure the durability of the motor.

A fourth object of the present invention is to provide an automatic ice making device which produces ice having a good shape and less likely to break.

A fifth object of the present invention is to provide an automatic ice making device which is unlikely to spill water when rocking.

[0016]

In order to achieve the first object, an automatic ice making device of the present invention comprises an ice tray, a support shaft connected and fixed to one end of the ice tray, and the support shaft as a shaft. A drive device for rotating the ice tray, and the drive device is operated during ice making to swing the ice tray from the horizontal position about the support shaft in the clockwise direction and the counterclockwise direction by 15 degrees or more and 30 degrees or less. It is composed of an ice making control means.

In order to achieve the second object, the automatic ice making device of the present invention stores in the ice tray immediately after the completion of water supply from the water supply device to the ice tray to the ice tray, the support shaft, the drive device, and the water supply device. The first period during which the driving device is stopped until the water is cooled to 0 ° C., and the driving device is stopped during the first period until the water completely freezes and drops to 0 ° C. or less. A second period in which the ice tray is actuated to oscillate in a clockwise / counterclockwise direction from a horizontal position about the support shaft, and, following the second period, the ice temperature is below a predetermined temperature of 0 ° C. or below. The ice-making control means performs the ice-making control during the first, second, and third periods of the third period during which the driving device is stopped until the above-mentioned period.

Further, in order to achieve the second object, the automatic ice making device of the present invention is such that the ice tray, the support shaft, the driving device, and the ice tray are supplied from immediately after the completion of water supply from the water supply device to the ice tray. The first period during which the driving device is stopped until the water stored in the container is cooled to 0 ° C., and the driving is continued until the water completely freezes and drops below 0 ° C. following the first period. A second period in which the device is operated to swing the ice tray from the horizontal position about the support shaft in the clockwise / counterclockwise direction intermittently at predetermined intervals, and the swing interval is gradually shortened. And, following the second period, the ice temperature is 0 ° C.
The ice-making control means performs ice-making control during the first, second, and third periods of the third period in which the drive device is stopped until the temperature becomes equal to or lower than a predetermined temperature.

Further, in order to achieve the second object, the automatic ice making device of the present invention is provided with the ice tray, the support shaft, the drive device, and the ice tray immediately after the completion of water supply from the water supply device to the ice tray. The first period during which the driving device is stopped until the water stored in the container is cooled to 0 ° C., and the driving is continued until the water completely freezes and drops below 0 ° C. following the first period. The device is operated intermittently to swing the ice tray from the horizontal position around the support shaft in the clockwise and counterclockwise directions,
And a second period in which the swing speed is gradually increased, and the second period
In the first of the third period, the drive device is stopped until the ice temperature becomes equal to or lower than a predetermined temperature of 0 ° C. or lower, following the period.
It comprises an ice making control means for performing ice making control during the second and third periods.

In order to achieve the third object, the automatic ice making device of the present invention is characterized in that the ice tray, the support shaft, the driving device, and the driving device are operated during ice making to operate the ice tray. A clockwise swing from the horizontal position about the support shaft to a clockwise angle to return to the horizontal position, and the drive device is operated to move the ice tray counterclockwise from the horizontal position about the support shaft. And an ice making control means for alternately performing a predetermined angle of rotation and returning to a horizontal position in a counterclockwise direction with a rest period.

In order to achieve the third object, the automatic ice making device of the present invention is the ice making tray, the support shaft, the driving device, and the ice making tray by operating the driving device during ice making. Is pivoted clockwise and counterclockwise from a horizontal position around the support shaft, and when the compressor stops during ice making, the ice tray stops swinging and returns to the horizontal position to stand still. It is composed of means and.

In order to achieve the third object, the automatic ice making device of the present invention comprises the ice tray, the support shaft, the drive device, and the ice tray by operating the drive device during ice making. Is rocked clockwise and counterclockwise from the horizontal position around the support shaft, and when defrosting of the cooler is started during ice making, the rocking of the ice tray is stopped and returned to the horizontal position for defrosting. It consists of an ice making control means that is stationary until the end.

In order to achieve the third object, the automatic ice making device of the present invention is the ice making tray, the support shaft, the driving device, and the ice making tray by operating the driving device during ice making. Is rocked clockwise and counterclockwise from the horizontal position around the support shaft, and when defrosting of the cooler is started during ice making, the rocking of the ice tray is stopped and returned to the horizontal position for defrosting. And the ice making control means which is stationary until the freezing room temperature reaches a predetermined temperature or lower.

In order to achieve the fourth object, the automatic ice making device of the present invention is characterized in that the ice tray, the support shaft, the driving device, and the driving device are operated during ice making to operate the ice tray. A first swing period in which the swing is performed in a clockwise or counterclockwise direction from a horizontal position about a support shaft by a predetermined angle, and after the first swing period, the drive device is operated to operate the ice tray. A second swing period for swinging from a horizontal position about the support shaft in a clockwise direction / counterclockwise direction at an angle smaller than a swing angle in the first swing period; and the first and second swing periods. And ice making control means for performing ice making control throughout the swing period.

In order to achieve the fifth object, the automatic ice making device of the present invention is characterized in that the ice tray, the support shaft, the driving device, and the driving device are operated during ice making to operate the ice tray. It swings clockwise and counterclockwise from the horizontal position around the support shaft at regular intervals intermittently, and when the ice making chamber door is opened during swinging, the swing is stopped and the unit returns to the horizontal position and returns to the next position. It consists of an ice making control means that is stationary until the rocking.

[0026]

With this configuration, since the swing is performed at the optimum angle, the swing effect can be surely obtained. That is, when the ice is generated, the gas component dissolved in the water becomes bubbles on the freezing surface and is likely to be taken into the ice, but the water in the ice making tray is more than 15 degrees and less than 30 degrees. Since it is rocked at an angle, the bubbles are well agitated and diffused to form completely transparent ice.

When the water supply to the ice tray is completed, the water temperature is 0 ° C.
Until the freezing starts and the freezing starts, the gas components dissolved in water are not discharged to the outside of the crystal lattice of ice, so the rocking is stopped to promote the freezing and until the freezing starts until it is completed. Since the rocking is performed only during the period and the rocking is stopped after the freezing is completed, the ice making time can be shortened.

Further, when the water supply to the ice tray is completed, the water temperature is 0 ° C.
Until the freezing starts and the freezing starts, the gas components dissolved in water are not discharged to the outside of the crystal lattice of ice, so the rocking is stopped to promote the freezing and until the freezing starts until it is completed. Only during the period, the rocking is intermittently performed at a predetermined interval, and the amount of gas discharged is small at the beginning of freezing, so the rocking interval is lengthened and the amount of gas discharged is increased as freezing progresses, so Just as the interval is shortened, the rocking interval is gradually shortened, so
The ice making time can be further shortened.

Further, when the water supply to the ice tray is completed, the water temperature is 0 ° C.
Until the freezing starts and the freezing starts, the gas components dissolved in water are not discharged to the outside of the crystal lattice of ice, so the rocking is stopped to promote the freezing and until the freezing starts until it is completed. The rocking is intermittently performed only during the period, and the amount of gas discharged is small at the beginning of freezing, so the speed of rocking is slowed, and the amount of gas discharged is increased as the freezing progresses, so the speed of rocking is increased. As described above, since the rocking speed is gradually increased, the ice making time can be shortened.

Further, without continuously swinging clockwise and counterclockwise, swinging only clockwise and swinging only counterclockwise are alternately performed with a pause time, so that the motor is energized. The time is halved, and the durability of the motor can be improved.

Further, while the compressor is stopped, the temperature of the ice making chamber rises, so that ice making does not proceed. During this time, the gas component dissolved in the water does not become bubbles and the bubbles are not taken into the ice, so the rocking is stopped.
Therefore, the energization time of the motor is shortened by the OFF time of the compressor, and the durability of the motor can be improved.

Further, during defrosting, the temperature of the ice making chamber rises, so that ice making does not proceed. During this time, the gas component dissolved in the water does not become bubbles and the bubbles are not taken into the ice, so the rocking is stopped. Therefore, the energization time of the motor is shortened by the defrosting time, and the durability of the motor can be improved.

Further, by making the swing angle in the second swing period smaller than the swing angle in the first swing period, the swing angle before the completion of ice making becomes smaller. Therefore, since the shape of the ice is adjusted before the ice making is completed, the shape of the ice is not deformed to be sharp in a direction away from the swing support shaft, and the appearance is not deteriorated, and the ice is not cracked during the ice removal.

When the door of the ice making chamber is opened during rocking, the rocking is stopped and returns to the horizontal position, where it remains stationary until the next rocking.
Therefore, even if the freezer compartment door or the ice making compartment door is vigorously closed when the maximum angle during rocking is reached, the water in the ice tray further jumps up and water is spilled, or the spilled water freezes on the movable part. No malfunction occurs.

[0035]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 1 denotes a refrigerator body, which is composed of an outer box 2, an inner box 3 and a heat insulating material 4 filled between the outer box 2 and the inner box 3. Reference numeral 5 is a partition wall that partitions the interior of the refrigerator body 1 into upper and lower parts, and defines a freezer compartment 6 in the upper part and a refrigerating compartment 7 in the lower part. Reference numeral 8 is a cooler of the refrigeration cycle provided on the back surface of the freezer compartment 6, and 9 is a blower for forcedly ventilating the cool air cooled by the cooler into the freezer compartment 6 and the refrigerating compartment 7. Reference numeral 120 denotes a refrigeration cycle compressor installed on the bottom surface of the refrigerator body 1.

Next, 10 is an automatic ice-making machine provided in the freezer compartment 6, which is a drive unit 11 incorporating a motor and a reduction gear (not shown), and an ice tray with a support shaft 12 fixedly connected to the central portion. 13, a frame 14 and the like for pivotally supporting the ice tray 13 on the drive unit 11.

Numeral 15 is a stopper provided in a part of the outer shell of the drive unit 11 in order to distort and deform the ice making tray 13 to perform ice separation, and 16 is the ice making so as to come into contact with the stopper. It is a backing plate attached on the plate 13.

Reference numeral 17 denotes an ice storage box provided below the automatic ice making machine 10. Reference numeral 18 is a water supply tank for storing water for ice making, which is detachably provided in one drawing in the refrigerating chamber 7. Reference numeral 19 denotes a water supply port of the water supply tank 18, which is opened and closed by a valve 20. Reference numeral 21 denotes a water tray provided below the water supply port 19 of the water supply tank 18. When the water supply tank 18 is set with the water supply port 19 facing downward, the valve 20 is pushed up to open the water supply port 19. Is configured.

Reference numeral 22 is a water supply pump for pumping the water received in the water receiving tray 21, and 23 is connected to the water supply pump 22 so that its outlet faces the ice tray 13 of the automatic ice making machine 10. It is a water supply pipe arranged in this way.

Next, the electric circuit shown in FIG. 3 will be described. A power outlet 24 is connected to the water supply pump 22 via a normally open contact 26 of the first relay 25, and is connected to a primary side of a power transformer 28 in a control device (ice making control means) 27 for performing a series of ice making control. Has been done. A power supply circuit 29 is connected to the secondary side of the power supply transformer 28.
The control device 27 has a horizontal position detection switch 30 and an inverted position detection switch 31 of the ice tray as inputs.

One end of the horizontal position detection switch 30 is connected to the DC power source Vcc, and the other end is grounded via the resistor R1 and is also connected to the input terminal a of the microcomputer 32. Further, one end of the inversion position detection switch 31 is connected to the DC power supply Vcc, and the other end is grounded via the resistor R2 and is also connected to the input terminal b of the microcomputer 32.

The output terminals c and d of the microcomputer 32 are connected to a motor 34 in the driving device 11 via a motor driving circuit 33. In addition, the output terminal e is the first relay 2 having the normally open contact 26 via the buffer 35.
Connected to 5.

The automatic ice making device configured as described above will be described with reference to the flowchart of FIG. 4 and the timing chart of FIG.

First, in the water supply process, when the user sets the water supply tank 18 filled with water at a predetermined position, the valve 20 is pushed up and the water supply port 19 is opened to fill the water pan 21 with water. .. Then, in step 36, H is output to the output terminal e of the microcomputer 32 for a certain period of time, the water supply pump 22 is operated for a certain period of time, and a predetermined amount of water is supplied to the ice tray 13 via the water supply pipe 23.

Next, in the ice making step, the integrated time for setting the time (time C) until the ice making is completed is started in step 37. In step 38, H and L are output to the output terminals c and d of the microcomputer 32 for a fixed time A, respectively, and the motor 34 in the drive device 11 is normally rotated for a fixed time A via the motor drive circuit 33. The ice tray 13 swings clockwise and moves at a predetermined angle (for example, 20 degrees) from the horizontal position.
Degree) reached the rotated position. Succeedingly, in a step 39, L and H are output to the output terminals c and d of the microcomputer 32 for a predetermined time 2A, respectively, and the motor 34
Is reversed for 2 A for a certain period of time. The ice tray 13 swings counterclockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees).

Then, in step 40, the motor 34 is normally rotated again. When the ice tray 13 is returned to the horizontal position and the horizontal position detection switch 30 is turned on in step 41, the motor is stopped in step 42. After the pause time B has elapsed in step 43, it is determined in step 44 whether or not the ice making completion time (time C) has been reached. When the ice making completion time (time C) is not reached in step 44, the process returns to step 38 again. By the series of operations from step 38 to step 42, the ice tray 13 swings around the support shaft 12 as shown in FIG.

In this ice making process, the cold air cooled by the cooler 8 by the blower 9 is cooled from the bottom of the ice tray 13 through the ventilation passage at the bottom of the ice tray 13, so that the ice making operation is performed on the bottom surface of the ice tray 13. The water surface side freezes at the end. By adding the swing shown in FIG. 6 during ice making, the bubbles 53 can be aggregated before being taken into the ice on the freezing surface 52 and raised by buoyancy to be released into the atmosphere.

Here, the swing angle is 1 as shown in FIG.
The effect cannot be obtained unless it is more than 5 degrees. If the rocking is less than 15 degrees, it is not possible to obtain a force sufficient to condense the bubbles on the frozen surface and raise them by buoyancy, so ice with high transparency cannot be obtained. 1
When the rocking is performed at 5 degrees or more, a force sufficient to collect bubbles on the frozen surface and raise them by buoyancy can be obtained, so that ice with high transparency can be obtained. However, when the rocking is over 30 degrees, the deformation of ice becomes remarkable. Further, in order to prevent water spilling during rocking, it is necessary to make the ice tray taller, which makes it difficult to remove ice. Therefore, the optimum swing angle is 15 degrees or more and 30 degrees or less.

When the predetermined ice making time (time C) is reached, the water in the ice making tray 14 is completely made, and the ice making process is finished at step 44.

Next, the ice removing step is performed. In step 45, H and L are output to the output terminals c and d of the microcomputer 32, and the motor 34 in the drive device 11 is rotated in the forward direction via the motor drive circuit 33. The ice tray 13 is rotated around the support shaft 12 by the rotating action of the drive device 11, and the contact plate 16 comes into contact with the stopper 15, so that the ice tray 13 is distorted and deformed so that the ice in the ice tray 13 is separated. Be iced. The released ice falls into the ice storage box 17 and is stored therein.

In step 46, when the ice tray 13 reaches the reverse position and the reverse position detection switch 31 is turned on, in step 47, L and H are output to the output terminals c and d of the microcomputer 32 to reverse the motor 34. To do. Then, the ice tray 13 for which the ice removing action has ended returns to the original state again. When the ice tray 14 is returned to the horizontal position and the horizontal position detection switch 30 is turned on in step 48,
In step 49, the motor is stopped.

Then, in step 50, it is judged whether or not the ice stored in the ice storage box 17 is full, and if it is not full, the process returns to step 36, and if it is full, it waits as it is.

As described above, according to this embodiment, rocking is performed at an optimum angle of 15 degrees or more and 30 degrees or less during ice making.
Even if gas components dissolved in water become bubbles on the freezing surface, they are aggregated before being taken into the ice by sufficient rocking force, rise by buoyancy and escape to the atmosphere, so there is no cloudiness. It is possible to make fresh ice.

The second embodiment of the present invention will be described below with reference to FIGS. The external structure of the automatic ice making device and the structure for mounting it on the refrigerator are the same as those of the first embodiment, and the drawings and detailed description thereof are omitted.

First, the electric circuit shown in FIG. 8 will be described. A power outlet 24 is connected to the water supply pump 22 via a normally open contact 26 of the first relay 25, and is connected to a primary side of a power transformer 28 in a control device (ice making control means) 27 for performing a series of ice making control. Has been done. A power supply circuit 29 is connected to the secondary side of the power supply transformer 28.
The control device 27 has, as inputs, a horizontal position detection switch 30 for the ice tray, an inverted position detection switch 31, and a temperature sensor 51 provided on the ice tray 13.

One end of the horizontal position detection switch 30 is connected to the DC power supply Vcc, and the other end is grounded via the resistor R1 and is connected to the input terminal a of the microcomputer 32. Further, one end of the inversion position detection switch 31 is connected to the DC power supply Vcc, and the other end is grounded via the resistor R2 and is also connected to the input terminal b of the microcomputer 32.

The temperature sensor 51 is an NTC thermistor, and its electric resistance decreases as the temperature of the object to be detected increases.
It also has a negative temperature characteristic in which the electric resistance increases as the temperature decreases. One end of the temperature sensor 51 has a DC power source Vc.
The other end is connected to the input terminal f of the microcomputer 44 while being grounded via the resistor R3.

The connection point of the resistors R4 and R5 is connected to the input terminal g of the microcomputer 32,
The other end of the resistor R4 is connected to the DC power supply Vcc, and the other end of the resistor R5 is grounded. Resistor R6 and resistor R7
Is connected to the input terminal h of the microcomputer 32, and the other end of the resistor R6 is connected to the DC power source V
It is connected to cc and the other end of the resistor R7 is grounded. The connection point of the resistors R8 and R9 is connected to the input terminal i of the microcomputer 32, the other end of the resistor R8 is connected to the DC power supply Vcc, and the resistor R9 is connected.
The other end of is grounded.

The resistors R4 and R5 form a first reference voltage corresponding to the ice making start temperature (for example, 0 ° C.), and the resistor R6.
And R7 is the second value corresponding to the ice making completion temperature (for example, -5 ° C).
A reference voltage is created, and the resistors R8 and R9 create a third reference voltage corresponding to the ice free temperature (for example, -15 ° C).

The output terminals c and d of the microcomputer 32 are connected to a motor 34 in the driving device 11 via a motor driving circuit 33. In addition, the output terminal e is the first relay 2 having the normally open contact 26 via the buffer 35.
Connected to 5.

The automatic ice making device configured as described above will be described with reference to the flowchart of FIG. 9 and the timing chart of FIG.

The water supply process is the same as in the first embodiment,
Detailed description thereof will be omitted. The ice making process first starts from the first period, and in step 54, the voltage signal based on the temperature detected by the temperature sensor 51 is compared with the first reference voltage corresponding to the ice making start temperature (for example, 0 ° C.), and the ice making tray 13 No water
Judge whether or not the temperature reaches ℃. If the temperature detected by the temperature sensor 51 is lower than the ice making start temperature, the routine proceeds to step 55.

The second period is started from step 55, and H is applied to the output terminals c and d of the microcomputer 32, respectively.
L is output for a fixed time A, and the motor 34 in the driving device 11 is normally rotated for a fixed time A through the motor drive circuit 33. The ice tray 13 swings clockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees). Subsequently, in step 56, the microcomputer 32
Then, L and H are output to the output terminals c and d for 2 A for a fixed time, and the motor 34 is rotated in the reverse direction for 2 A. The ice tray 13 swings counterclockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees).

Then, in step 57, the motor 34 is normally rotated again. When the ice tray 13 returns to the horizontal position and the horizontal position detection switch 30 is turned on in step 58, the motor is stopped in step 59. Then, after the quiescent time B has elapsed in step 60, in step 61, the voltage signal based on the temperature detected by the temperature sensor 51 and the second reference voltage corresponding to the ice making completion temperature (for example, −5 ° C.) are compared, It is determined whether or not the water in the ice tray 13 is completely frozen and is 0 ° C. or lower. If the temperature detected by the temperature sensor 51 is higher than the ice making completion temperature, the process returns to step 55 again. By the series of operations from step 55 to step 59, as shown in FIG.
As shown in, the ice tray 13 swings around the support shaft 12.

In this ice making process, the cold air cooled by the cooler 8 by the blower 9 is cooled from the bottom of the ice tray 13 through the ventilation passage at the bottom of the ice tray 13, so that the ice making operation is performed on the bottom surface of the ice tray 13. The water surface side freezes at the end.

By adding the swing shown in FIG. 6 during ice making, the bubbles 53 can be gathered on the freezing surface 52 before being taken into the ice, and the bubbles 53 can be lifted by the buoyancy and released into the atmosphere.

In step 61, the voltage signal based on the temperature detected by the temperature sensor 51 and the second reference voltage corresponding to the ice making completion temperature (for example, -5 ° C.) are compared, and the water in the ice making tray 13 is completely frozen. Then, it is determined whether or not the temperature becomes 0 ° C. or less. If the temperature detected by the temperature sensor 51 is lower than the ice making completion temperature, the process proceeds to step 62.

The third period starts from step 62, and cooling is continued to a sufficiently low temperature (for example, -15 ° C.) such that the ice in the ice tray 13 does not break even when ice is released. Then, the voltage signal based on the temperature detected by the temperature sensor 51 is compared with the third reference voltage corresponding to the ice free temperature (for example, −15 ° C.), and the water in the ice tray 13 is completely frozen and the ice is released. Judge whether the temperature is low enough not to break even if it is broken. If the temperature detected by the temperature sensor 51 is lower than the temperature at which ice can be released,
Finish the ice making process.

Next, the ice removing step is performed. In addition, the ice removal process is the first
This is the same as the embodiment, and detailed description thereof is omitted.

As described above, according to the present embodiment, even if gas components dissolved in water become bubbles on the freezing surface, they are aggregated before being taken into the ice by rocking and rise by buoyancy. By letting it escape into the atmosphere, transparent ice without cloudiness can be made.

When the water supply to the ice tray is completed, the water temperature is 0 ° C.
Until the freezing starts and the freezing starts, the gas components dissolved in water are not discharged to the outside of the crystal lattice of ice, so the rocking is stopped to promote the freezing and until the freezing starts until it is completed. Since the rocking is performed only during the period of time and stopped after the completion of the freezing, the ice making time can be shortened.

The third embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to the flowchart of FIG. The external structure of the automatic ice making device and the structure for mounting it on the refrigerator are the same as those of the first embodiment and the circuit diagram of the second embodiment, and the drawings and detailed description thereof are omitted.

The water supply process is the same as that of the first embodiment, and the detailed description thereof will be omitted. First, the ice making process
Starting from the period, in step 63, the voltage signal based on the temperature detected by the temperature sensor 51 and the ice making start temperature (for example, 0 ° C.)
It is determined whether the water in the ice tray 13 has reached 0 ° C. by comparing with the first reference voltage corresponding to. If the temperature detected by the temperature sensor 51 is lower than the ice making start temperature, the process proceeds to step 64.

The second period starts from step 64, and the second period starts.
The integrated time for setting the time (time C) of the first mode of the period is started. Then, in step 65, H and V are output to the output terminals c and d of the microcomputer 32, respectively.
L is output for a fixed time A, and the motor 34 in the driving device 11 is normally rotated for a fixed time A through the motor drive circuit 33. The ice tray 13 swings clockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees). Subsequently, in step 66, the microcomputer 32
Then, L and H are output to the output terminals c and d for 2 A for a fixed time, and the motor 34 is rotated in the reverse direction for 2 A. The ice tray 13 swings counterclockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees).

Then, in step 67, the motor 34 is normally rotated again. When the ice tray 14 is returned to the horizontal position and the horizontal position detection switch 30 is turned on in step 68, the motor is stopped in step 69. Then, after the pause time B has passed in step 70, if the completion time (time C) of the first mode has not been reached in step 71, the process returns to step 65 again. By the series of operations from step 65 to step 69, the ice tray 13 intermittently rocks at a predetermined interval (pause time B) as shown in FIG.

Next, when the predetermined first mode time (time C) is reached, the routine proceeds to step 72, where the second mode of the second period is started.

In step 72, H and L are output to the output terminals c and d of the microcomputer 32 for a fixed time A, respectively, and the drive device 1 is driven via the motor drive circuit 33.
The motor 34 in 1 is rotated in the normal direction for a fixed time A. Ice tray 1
3 swings clockwise and reaches a position rotated by a predetermined angle (for example, 20 degrees) from the horizontal position. Continue to Step 6
0, the output terminal c of the microcomputer 32,
L and H are output to d for a fixed time of 2 A, respectively, and the motor 34 is reversely rotated for a fixed time of 2 A. The ice tray 13 swings counterclockwise to a predetermined angle (for example, 20 degrees) from the horizontal position.
Reach the rotated position.

Then, in step 74, the motor 34 is normally rotated again. When the ice tray 13 returns to the horizontal position and the horizontal position detection switch 30 is turned on in step 75, the motor is stopped in step 76. Then, after a quiescent time D shorter than the quiescent time B in the first mode has elapsed in step 77, a voltage signal based on the temperature detected by the temperature sensor 51 and an ice making completion temperature (for example, −5 ° C.) are set in step 78. A comparison is made with the corresponding second reference voltage to determine whether the water in the ice tray 13 has completely frozen to 0 ° C or lower. If the temperature detected by the temperature sensor 51 is higher than the ice making completion temperature,
It returns to step 72 again. By the series of operations from step 72 to step 76, the ice tray 13 intermittently swings at a predetermined interval (a pause time D shorter than the pause time B in the first mode) as shown in FIG. ..

In this ice making process, the cold air cooled by the cooler 8 by the blower 9 passes through the ventilation passages at the bottom of the ice tray 13 to cool from the bottom of the ice tray 13, so that the ice making operation is performed on the bottom surface of the ice tray 13. The water surface side freezes at the end. By adding the swing shown in FIG. 6 during ice making, the bubbles 53 can be aggregated before being taken into the ice on the freezing surface 52 and raised by buoyancy to be released into the atmosphere.

Here, since the amount of gas discharged is small at the beginning of freezing, the rocking interval is lengthened to decrease the frequency of rocking, and the amount of gas discharged is increased as the freezing progresses, so the fluctuation of rocking is increased. Shorten the interval to increase the frequency of rocking.

In step 78, the voltage signal based on the temperature detected by the temperature sensor 51 and the second reference voltage corresponding to the ice making completion temperature (for example, -5 ° C.) are compared, and the water in the ice making tray 13 is completely frozen. Then, it is determined whether or not the temperature becomes 0 ° C. or less. If the temperature detected by the temperature sensor 51 is lower than the ice making completion temperature, the second period is ended and the routine proceeds to step 79.

The third period starts from step 79, and the cooling is continued to a sufficiently low temperature (for example, -15 ° C.) such that the ice in the ice tray 13 does not break even when the ice is released. Then, the voltage signal based on the temperature detected by the temperature sensor 51 is compared with the third reference voltage corresponding to the ice free temperature (for example, −15 ° C.), and the water in the ice tray 13 is completely frozen and the ice is released. Judge whether the temperature is low enough not to break even if it is broken. If the temperature detected by the temperature sensor 51 is lower than the temperature at which ice can be released,
Finish the ice making process.

Next, the ice removing step is carried out. The ice removing step is the same as that in the first embodiment, and the detailed description thereof will be omitted.

Further, in the present embodiment, the second period is divided into two modes and the swing interval is shortened in the latter mode. However, the second period is divided into three or more modes and the swing interval is divided into three or more modes. May be shorter in later modes. Also, 1
The swing interval may be gradually shortened for each swing.

As described above, according to the present embodiment, even if gas components dissolved in water become bubbles on the freezing surface, they are aggregated and lifted by buoyancy before being taken into ice due to rocking. By letting it escape into the atmosphere, transparent ice without cloudiness can be made.

Also, when the water supply to the ice tray is completed, the water temperature is 0 ° C.
Until the freezing starts and the freezing starts, the gas components dissolved in water are not discharged to the outside of the crystal lattice of ice, so the rocking is stopped to promote the freezing and until the freezing starts until it is completed. Since the rocking is performed only during the period and the rocking is stopped after the freezing is completed, the ice making time can be shortened.

Furthermore, since the amount of gas discharged is small at the beginning of freezing, the rocking interval is lengthened, and as the amount of gas discharged is increased as the freezing progresses, the rocking interval is shortened. Since the interval is gradually shortened, the ice making time can be further shortened.

Next, a fourth embodiment of the present invention will be described with reference to FIG.
This will be described with reference to the flowchart of FIG. 3 and the timing chart of FIG. The external structure of the automatic ice making device and the structure for mounting it on the refrigerator are the same as those of the first embodiment and the circuit diagram of the second embodiment, and the drawings and detailed description thereof are omitted.

The water supply process is the same as that of the first embodiment, and the detailed description thereof will be omitted. First, the ice making process
Starting from the period, in step 80, the voltage signal based on the temperature detected by the temperature sensor 51 and the ice making start temperature (for example, 0 ° C.)
It is determined whether the water in the ice tray 13 has reached 0 ° C. by comparing with the first reference voltage corresponding to. If the temperature detected by the temperature sensor 51 is lower than the ice making start temperature, the process proceeds to step 81.

The second period starts from step 81, and the second period starts.
The integrated time for setting the time (time C) of the first mode of the period is started. Then, in step 82, H and V are output to the output terminals c and d of the microcomputer 32, respectively.
L is output for a fixed time A, and the motor 34 in the drive device 11 is normally rotated at a speed a for a fixed time A through a motor drive circuit 33 capable of controlling the motor speed. Ice tray 1
3 swings clockwise and reaches a position rotated by a predetermined angle (for example, 20 degrees) from the horizontal position. Continue to Step 8
3, the output terminal c of the microcomputer 32,
L and H are output to d for a fixed time of 2 A, respectively, and the motor 34 is reversely rotated at a speed a for a fixed time of 2 A. Ice tray 13
Swings counterclockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees).

Then, in step 84, the motor 34 is normally rotated again. When the ice tray 13 returns to the horizontal position and the horizontal position detection switch 30 is turned on in step 85, the motor 34 is stopped in step 86. And step 8
If the completion time (time C) of the first mode is not reached in step 88 after the quiescent time B has elapsed in step 7, the process returns to step 82 again. This step 82 to step 6
As shown in FIG. 6, the ice tray 13
Oscillates intermittently at a predetermined interval (pause time B).

Next, when the predetermined first mode time (time C) is reached, the routine proceeds to step 89, where the second mode of the second period is started.

In step 89, H and L are output to the output terminals c and d of the microcomputer 32 for a fixed time A, respectively, and the drive unit 1 is driven via the motor drive circuit 33.
The motor 34 in 1 is normally rotated for a certain period of time D at a speed d higher than the speed in the first mode. The ice tray 13 swings clockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees). Subsequently, in step 90, L and H are respectively applied to the output terminals c and d of the microcomputer 32.
Is output for a fixed time 2A, and the motor 34 is reversely rotated at a speed d for a fixed time 2D. The ice tray 13 swings counterclockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees).

Then, in step 91, the motor 34 is normally rotated again. When the ice tray 13 returns to the horizontal position and the horizontal position detection switch 30 is turned on in step 92, the motor is stopped in step 93. Then, after the pause time E has elapsed in step 94, in step 95, the voltage signal based on the temperature detected by the temperature sensor 51 and the second reference voltage corresponding to the ice making completion temperature (for example, −5 ° C.) are compared, It is determined whether or not the water in the ice tray 13 is completely frozen and is 0 ° C. or lower. If the temperature detected by the temperature sensor 51 is higher than the ice making completion temperature, the process returns to step 89 again. By the series of operations from step 89 to step 93, as shown in FIG.
As shown in, the ice tray 13 intermittently rocks at a predetermined interval (rest time E).

In this ice making process, the cold air cooled by the cooler 8 by the blower 9 is cooled from the bottom of the ice tray 13 through the ventilation passages at the bottom of the ice tray 13, so that the ice making operation is performed on the bottom surface of the ice tray 13. The water surface side freezes at the end.

By adding the swing shown in FIG. 6 during ice making, the bubbles 53 can be aggregated on the freezing surface 52 before being taken into the ice and can be lifted by the buoyancy to be released into the atmosphere.

Here, since the amount of gas discharged is small at the beginning of freezing, the speed of rocking is slowed to reduce the frequency of rocking, and the amount of gas discharged is increased as the freezing progresses, and therefore the fluctuation of rocking is increased. Increase the speed and increase the frequency of rocking.

In step 95, the voltage signal based on the temperature detected by the temperature sensor 51 and the second reference voltage corresponding to the ice making completion temperature (for example, -5 ° C.) are compared, and the water in the ice making tray 13 is completely frozen. Then, it is determined whether or not the temperature becomes 0 ° C. or less. If the temperature detected by the temperature sensor 51 is lower than the ice making completion temperature, the second period is ended and the routine proceeds to step 96.

The third period starts from step 96, and cooling is continued to a sufficiently low temperature (for example, -15 ° C.) such that the ice in the ice tray 13 does not break even when ice is released. Then, the voltage signal based on the temperature detected by the temperature sensor 51 is compared with the third reference voltage corresponding to the ice free temperature (for example, −15 ° C.), and the water in the ice tray 13 is completely frozen and the ice is released. Judge whether the temperature is low enough not to break even if it is broken. If the temperature detected by the temperature sensor 51 is lower than the temperature at which ice can be released,
Finish the ice making process.

Next, the ice removing step is carried out, but the ice removing step is the same as that of the first embodiment, and the detailed description thereof will be omitted.

Further, in the present embodiment, the second period is divided into two modes, and the motor speed, that is, the swing speed is set higher in the latter mode. However, the second period is divided into three or more modes,
The rocking speed may be set higher in the later modes. Further, the rocking speed may be gradually increased for each rocking.

As described above, according to this embodiment, even if gas components dissolved in water become bubbles on the freezing surface, they are aggregated before being taken into ice by rocking and rise by buoyancy. By letting it escape into the atmosphere, transparent ice without cloudiness can be made.

When the water supply to the ice tray is completed, the water temperature is 0 ° C.
Until the freezing starts and the freezing starts, the gas components dissolved in water are not discharged to the outside of the crystal lattice of ice, so the rocking is stopped to promote the freezing and until the freezing starts until it is completed. Since the rocking is performed only during the period and the rocking is stopped after the freezing is completed, the ice making time can be shortened.

Further, since the amount of gas discharged is small at the beginning of freezing, the rocking speed is slowed down, and as the amount of gas discharged is increased as the freezing progresses, the rocking speed is increased so that the rocking speed is increased. Since the speed is gradually increased, the ice making time can be further shortened.

The fifth embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to the flowchart of FIG. The external structure of the automatic ice making device and the structure for mounting it on the refrigerator are the same as those of the first embodiment and the circuit diagram of the second embodiment, and the drawings and detailed description thereof are omitted.

The water supply process is the same as that of the first embodiment, and the detailed description thereof will be omitted. In the ice making process, first, at step 97, H and L are respectively output to the output terminals c and d of the microcomputer 32 for a predetermined time A, and the motor 34 in the drive device 11 is supplied via the motor drive circuit 33.
Is rotated forward for A for a certain period of time. The ice tray 13 swings clockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees). Succeedingly, in a step 98, L and L are respectively applied to the output terminals c and d of the microcomputer 32.
H is output to rotate the motor 34 in the reverse direction. In step 99, the ice tray 13 returns to the horizontal position and the horizontal position detection switch 30
When is turned on, the motor 34 is stopped in step 100. Then, after the pause time B has elapsed in step 101, the process proceeds to step 102.

In step 102, L and H are output to the output terminals c and d of the microcomputer 32 for a fixed time A, and the motor 34 in the drive unit 11 is reversely rotated for a fixed time A via the motor drive circuit 33. .. The ice tray 13 swings counterclockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees). Then, in step 66, H and L are output to the output terminals c and d of the microcomputer 32, respectively, and the motor 34 is normally rotated. When the ice tray 13 is returned to the horizontal position and the horizontal position detection switch 30 is turned on in step 104, step 105
Stop the motor with. Then, after the pause time B has elapsed in step 106, the process proceeds to step 107.

In step 107, the voltage signal based on the temperature detected by the temperature sensor 51 and the temperature at which the ice can be released (for example, -1).
5 ° C) and a third reference voltage corresponding to
Determine whether the water inside has cooled to a temperature below which it does not break even when it is frozen. If the temperature detected by the temperature sensor 51 is higher than the temperature at which ice can be released, step 97 is executed again.
Return to. By the series of operations from step 97 to step 105, the ice tray 13 swings only in the clockwise direction,
Swinging only in the counterclockwise direction is alternately performed with a predetermined interval (pause time B).

In this ice making process, the cold air cooled by the cooler 8 by the blower 9 is cooled from the bottom of the ice tray 13 through the ventilation passage at the bottom of the ice tray 13, so that the ice making operation is performed on the bottom surface of the ice tray 13. The water surface side freezes at the end.

Then, during the ice making, a clockwise swing and a counterclockwise swing are added at predetermined intervals,
Before the bubbles 57 are taken into the ice on the freezing surface 56, they are aggregated and lifted by buoyancy to escape into the atmosphere.

In step 107, the voltage signal based on the temperature detected by the temperature sensor 51 and the temperature at which ice can be released (for example, -15).
C.) is compared with a third reference voltage, and it is determined whether or not the temperature in the ice tray 13 has reached a sufficiently low temperature so that the water in the ice tray 13 is completely frozen and does not break even when ice is removed. If the temperature detected by the temperature sensor 51 is lower than the temperature at which ice can be released, the ice making process ends.

Next, the ice removing step is carried out, but the ice removing step is the same as that of the first embodiment, and the detailed description thereof will be omitted.

As described above, according to the present embodiment, even if gas components dissolved in water become bubbles on the freezing surface, they collectively rise before being taken into the ice due to rocking and rise by buoyancy. By letting it escape into the atmosphere, transparent ice without cloudiness can be made.

[0115] Further, the rocking of only the clockwise direction and the rocking of only the counterclockwise direction are alternately performed with a pause time without continuously rocking in the clockwise direction and the counterclockwise direction, so that the motor 34 of the motor 34 is rotated. The energization time is halved, and the life and reliability of the motor can be improved.

The sixth embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to the flowchart of FIG. The external structure of the automatic ice making device and the structure for mounting it on the refrigerator are the same as those of the first embodiment and the circuit diagram of the second embodiment, and the drawings and detailed description thereof are omitted.

The water supply process is the same as that of the first embodiment, and detailed description thereof will be omitted. In the ice making process, first, at step 108, the compressor 120 of the refrigeration cycle is turned off.
Whether it is N or OFF is determined. If it is ON, the process proceeds to step 109, and if it is OFF, the process proceeds to step 119.

If the compressor 120 is ON, step 10
9, the output terminal c of the microcomputer 32,
H and L are output to d for a fixed time A, respectively, and the motor 34 in the drive device 11 is normally rotated for a fixed time A via the motor drive circuit 33. The ice tray 13 swings clockwise,
It reaches a position rotated by a predetermined angle (for example, 20 degrees) from the horizontal position. Subsequently, in step 112, L and H are output to the output terminals c and d of the microcomputer 32 for a fixed time 2A, respectively, and the motor 34 is rotated in the reverse direction for a fixed time 2A. The ice tray 13 swings counterclockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees).

Then, in step 114, the motor 34 is normally rotated again. When the ice tray 13 is returned to the horizontal position and the horizontal position detection switch 30 is turned on in step 115,
In step 117, the motor is stopped. Then, after the pause time B has elapsed in step 118, the process proceeds to step 119. In step 119, the voltage signal based on the temperature detected by the temperature sensor 51 and the temperature at which ice can be released (for example, −15 ° C.)
It is determined whether the temperature in the ice tray 13 is below the temperature at which the water in the ice tray 13 completely freezes and does not break even when ice is removed. If the temperature detected by the temperature sensor 51 is higher than the temperature at which ice can be released, the process returns to step 109 again. By the series of operations from step 109 to step 117, the ice tray 13 intermittently swings at a predetermined interval (pause time B) as shown in FIG.

In this ice making process, the cold air cooled by the cooler 8 by the blower 9 is cooled from the bottom of the ice tray 13 through the ventilation passage at the bottom of the ice tray 13, so that the ice making operation is performed on the bottom surface of the ice tray 13. The water surface side freezes at the end.

By adding the swing shown in FIG. 6 during ice making, the bubbles 53 can be gathered on the freezing surface 52 before being taken into the ice, and can be lifted by the buoyancy to be released into the atmosphere.

In step 119, the voltage signal based on the temperature detected by the temperature sensor 51 and the temperature at which ice can be released (for example, -15).
C.) is compared with a third reference voltage, and it is determined whether or not the temperature in the ice tray 13 has reached a sufficiently low temperature so that the water in the ice tray 13 is completely frozen and does not break even when ice is removed. If the temperature detected by the temperature sensor 51 is lower than the temperature at which ice can be released, the ice making process ends.

Here, when the compressor 120 is turned off when the rocking is stopped during the ice making process, from step 120 to step 1
In step 19, the swing period from step 109 to step 117 is skipped. That is, the rocking is not performed while the compressor 120 is off.

Further, the compressor 120 is turned off during rocking during the ice making process, that is, between step 109 and step 117.
If so, the process proceeds from step 110, step 113, and step 115 to step 120 in the subroutine.

For example, when the compressor 120 is turned off during the reverse rotation of the motor in step 112, as shown at point C in FIG. 18, from step 113 to step 120 of the subroutine.
Proceed to. Since the motor 34 is in reverse rotation, step 12
The routine proceeds from 0 to step 125, and in step 125, the motor 34 is normally rotated again. Ice tray 1 in step 122
3 returns to the horizontal position and the horizontal position detection switch 30 turns on.
Then, in step 123, the motor 34 is stopped. Then, while the compressor 120 is OFF, the ice tray 13 continues to stand still at the horizontal position. When the compressor 120 is turned on, step 1
Step 1 during the ice making process, leaving the subroutine from 24
Returning to step 13, the operation described above is continued.

Next, the ice removing step is carried out, but the ice removing step is the same as that of the first embodiment, and the detailed description thereof will be omitted.

As described above, according to the present embodiment, even if gas components dissolved in water become bubbles on the freezing surface, they are aggregated before being taken into the ice due to rocking and rise by buoyancy. By letting it escape into the atmosphere, transparent ice without cloudiness can be made.

Further, while the compressor is stopped, the temperature of the ice making chamber rises, so that ice making does not proceed. During this time, the gas component dissolved in the water does not become bubbles and the bubbles are not taken into the ice, so the rocking is stopped.
Therefore, the energization time of the motor is shortened by the OFF time of the compressor, and the durability of the motor can be improved.

When the compressor is stopped during the swing, the motor is rotated in the forward direction to return the ice tray to the horizontal position and stands still, and the motor is rotated in the forward direction during the reverse rotation. Return the ice tray to a horizontal position and stand still. Therefore, since the ice tray does not stand still in a tilted state, irregular shaped ice is not formed.

FIG. 19 shows the seventh embodiment of the present invention.
This will be described with reference to the flowchart of FIG. The external structure of the automatic ice making device and the structure for mounting it on the refrigerator are the same as those of the first embodiment and the circuit diagram of the second embodiment, and the drawings and detailed description thereof are omitted.

The water supply process is the same as that of the first embodiment, and the detailed description thereof will be omitted. In the ice making process, first, in step 127, it is determined whether or not the cooler 8 of the refrigeration cycle is being defrosted, that is, whether the defrosting heater (not shown) arranged in the cooler is ON or OFF, and is turned OFF. If it is, the process proceeds to step 128, and if it is ON, the process proceeds to step 137.

If the defrosting heater is off, step 1
At 28, H and L are output to the output terminals c and d of the microcomputer 32 for a fixed time A, respectively, and the motor 34 in the drive device 11 is normally rotated for a fixed time A via the motor drive circuit 33. The ice tray 13 swings clockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees). Succeedingly, in a step 130, the output terminals c and d of the microcomputer 32 are respectively set to L,
H is output for 2 A for a certain time, and the motor 34 is output for 2 A for a certain time.
Reverse only A. The ice tray 13 swings counterclockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees).

Then, in step 132, the motor 34 is normally rotated again. When the ice tray 13 returns to the horizontal position and the horizontal position detection switch 30 is turned on in step 134,
In step 135, the motor 34 is stopped. Then, after the pause time B has elapsed in step 136, step 13
Go to 5. In step 135, the voltage signal based on the temperature detected by the temperature sensor 51 and the temperature at which the ice can be released (for example, −15).
C.) is compared with a third reference voltage, and it is determined whether or not the temperature of the water in the ice tray 13 is completely frozen and is below a temperature at which it does not break even when ice is removed. If the temperature detected by the temperature sensor 51 is higher than the temperature at which ice can be released, step 137 is performed again.
Return to. By the series of operations from step 128 to step 135, the ice tray 13 intermittently rocks at a predetermined interval (pause time B) as shown in FIG.

In this ice making process, the cold air cooled by the cooler 8 by the blower 9 is cooled from the bottom of the ice tray 13 through the ventilation passage at the bottom of the ice tray 13, so that the ice making operation is performed on the bottom surface of the ice tray 13. The water surface side freezes at the end.

By adding the swing shown in FIG. 6 during ice making, the bubbles 53 can be aggregated on the freezing surface 52 before being taken into the ice, and the bubbles 53 can be raised by buoyancy and released to the atmosphere.

At step 134, the voltage signal based on the temperature detected by the temperature sensor 51 and the temperature at which ice can be released (for example, -15).
C.) is compared with a third reference voltage, and it is determined whether or not the temperature in the ice tray 13 has reached a sufficiently low temperature so that the water in the ice tray 13 is completely frozen and does not break even when ice is removed. If the temperature detected by the temperature sensor 51 is lower than the temperature at which ice can be released, the ice making process ends.

Here, when defrosting is started when the rocking is stopped during the ice making process, that is, when the defrosting heater is turned on, the routine proceeds from step 127 to step 137, and the rocking period from step 128 to step 135 is skipped. .. That is, the defrosting heater is not rocked while it is ON.

If the defrosting heater is turned on during the rocking process during the ice making process, that is, between step 128 and step 135, step 129, step 131, step 1
The process proceeds from 33 to step 138 in the subroutine.

For example, as shown by point C in FIG. 20, the compressor 120 is turned off during the reverse rotation of the motor 34 in step 130.
If so, the process proceeds from step 131 to step 138 in the subroutine. Since the motor 34 is in reverse rotation, the routine proceeds from step 138 to step 143, and step 143
At, the motor 34 is normally rotated again. In step 144, the ice tray 13 returns to the horizontal position and the horizontal position detection switch 3
When 0 is turned on, the motor is stopped in step 141.
Then, while the cooler 8 of the refrigeration cycle is defrosting, that is, while the defrosting heater is ON, the ice tray 13 stops swinging and continues to stand still at the horizontal position. Defrosting is over and defrosting heater is off
Then, the subroutine is exited from step 142 and returns to step 31 during the ice making process to continue the above-described operation.

Next, the ice removing step is carried out, but the ice removing step is the same as that of the first embodiment, and the detailed description thereof will be omitted.

As described above, according to this embodiment, even if gas components dissolved in water become bubbles on the freezing surface, they are collectively buoyantly raised before being taken into ice by rocking. By letting it escape into the atmosphere, transparent ice without cloudiness can be made.

Further, during defrosting, the temperature of the ice making chamber rises, so that ice making does not proceed. During this time, the gas component dissolved in the water does not become bubbles and the bubbles are not taken into the ice, so the rocking is stopped. Therefore, the energization time of the motor is shortened by the defrosting time, and the durability of the motor can be improved.

When defrosting is started during swinging, the motor is reversely rotated during normal rotation to return the ice tray to the horizontal position and stopped, and while the motor is reversely rotated, forward rotation is performed. Return the ice tray to a horizontal position and stand still. Therefore, since the ice tray does not stand still in a tilted state, irregular shaped ice is not formed.

FIG. 21 shows the eighth embodiment of the present invention.
This will be described with reference to the flowchart of FIG. The external structure of the automatic ice making device and the structure for mounting it on the refrigerator are the same as those of the first embodiment and the circuit diagram of the second embodiment, and the drawings and detailed description thereof are omitted.

The water supply process is the same as in the first embodiment, and detailed description thereof will be omitted. In the ice making process, first, in step 145, it is determined whether or not the cooler 8 of the refrigeration cycle is being defrosted, that is, whether the defrosting heater (not shown) arranged in the cooler is ON or OFF, and is turned OFF. If it is, the process proceeds to step 146, and if it is ON, the process proceeds to step 155.

If the defrosting heater is OFF, step 1
At 46, H and L are output to the output terminals c and d of the microcomputer 32 for a fixed time A, respectively, and the motor 34 in the drive device 11 is normally rotated for a fixed time A via the motor drive circuit 33. The ice tray 13 swings clockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees). Then, in step 148, L, L are respectively applied to the output terminals c and d of the microcomputer 32.
H is output for 2 A for a certain time, and the motor 34 is output for 2 A for a certain time.
Reverse only A. The ice tray 13 swings counterclockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees).

Then, in step 150, the motor 34 is normally rotated again. When the ice tray 13 is returned to the horizontal position and the horizontal position detection switch 30 is turned on in step 152,
In step 153, the motor 34 is stopped. Then, after the pause time B has elapsed in step 154, step 15
Go to 5. In step 155, the voltage signal based on the temperature detected by the temperature sensor 51 and the temperature at which ice can be released (for example, −15).
C.) is compared with a third reference voltage, and it is determined whether or not the temperature of the water in the ice tray 13 is completely frozen and is below a temperature at which it does not break even when ice is removed. If the temperature detected by the temperature sensor 51 is higher than the temperature at which ice can be released, step 146 is performed again.
Return to. By the series of operations from step 146 to step 153, the ice tray 13 intermittently swings at a predetermined interval (pause time B) as shown in FIG.

In this ice making process, the cold air cooled by the cooler 8 by the blower 9 cools from the bottom of the ice tray 13 through the ventilation passage at the bottom of the ice tray 13, so that the ice making operation is performed on the bottom surface of the ice tray 13. The water surface side freezes at the end.

By adding the swing shown in FIG. 6 during ice making, the bubbles 57 can be aggregated on the freezing surface 56 before being taken into the ice, and can be lifted by the buoyancy to be released into the atmosphere.

In step 155, the voltage signal based on the temperature detected by the temperature sensor 51 and the temperature at which ice can be released (for example, -15).
C.) is compared with a third reference voltage, and it is determined whether or not the temperature in the ice tray 13 has reached a sufficiently low temperature so that the water in the ice tray 13 is completely frozen and does not break even when ice is removed. If the temperature detected by the temperature sensor 51 is lower than the temperature at which ice can be released, the ice making process ends.

Here, when defrosting is started when the rocking is stopped during the ice making process, that is, when the defrosting heater is turned on, the routine proceeds from step 145 to step 155, and the rocking period from step 146 to step 153 is skipped. .. That is, the defrosting heater is not rocked while it is ON.

When the defrosting heater is turned on during the rocking process during the ice making process, that is, during steps 146 to 153, step 147, step 149, step 1
The routine proceeds from step 51 to step 156 in the subroutine.

For example, as shown at point C in FIG. 20, the compressor 120 is turned off during the reverse rotation of the motor 34 in step 148.
If so, the process proceeds from step 149 to step 156 in the subroutine. Since the motor 34 is in reverse rotation, the routine proceeds from step 156 to step 161, and step 161
At, the motor 34 is normally rotated again. In step 162, the ice tray 13 returns to the horizontal position and the horizontal position detection switch 3
When 0 is turned on, the motor 34 is stopped in step 159. Then, until the defrosting of the cooler 8 is finished, the defrosting heater is turned off, the compressor is turned on, and the freezer compartment temperature reaches the predetermined temperature or lower, the ice tray 13 stops swinging and is kept in the horizontal position. Stay still. Defrosting is over and defrosting heater is off
Then, the compressor is turned on and the freezer compartment temperature reaches a predetermined temperature (eg −
When the temperature reaches 5 ° C. or lower, the subroutine is exited from step 160, the process returns to step 149 during the ice making process, and the above-described operation is continued.

Next, the ice removing step is carried out. Since the ice removing step is the same as that of the first embodiment, detailed description thereof will be omitted.

As described above, according to the present embodiment, even if gas components dissolved in water become bubbles on the freezing surface, they are aggregated before being taken into the ice due to rocking and rise by buoyancy. By letting it escape into the atmosphere, transparent ice without cloudiness can be made.

Further, since the temperature of the ice making chamber rises during the defrosting and for a certain time after the defrosting ends, the ice making does not proceed. During this time, the gas component dissolved in the water does not become bubbles and the bubbles are not taken into the ice, so the rocking is stopped. Therefore, the energization time of the motor is shortened by the defrosting time, and the durability of the motor can be improved.

When defrosting is started during rocking, the motor reverses while the motor is rotating forward to return the ice tray to the horizontal position and stands still. When the motor reverses, the motor rotates forward. Return the ice tray to a horizontal position and stand still. Therefore, since the ice tray does not stand still in a tilted state, irregular shaped ice is not formed.

FIG. 23 shows the ninth embodiment of the present invention.
This will be described with reference to the flowchart of FIG. The external structure of the automatic ice making device and the structure for mounting it on the refrigerator are the same as those of the first embodiment and the circuit diagram of the second embodiment, and the drawings and detailed description thereof are omitted.

The water supply process is the same as that of the first embodiment, and the detailed description thereof will be omitted. First, the ice making process
Starting from the period, in step 163, a voltage signal based on the temperature detected by the temperature sensor 51 and an ice making start temperature (for example, 0
C.) is compared with a first reference voltage corresponding to (0.degree. C.) to determine whether the water in the ice tray 13 has reached 0.degree. Temperature sensor 51
If the detected temperature is lower than the ice making start temperature, step 1
Proceed to 64.

When the second period starts from step 164, the first swing period of the second period starts, and the integrated time for setting the time (time C) of the first swing period is started. Here, the time C is the time required to reach a state where more than half of the water in the ice tray 13 is frozen and only the upper surface remains with water.

Then, in step 165, H and L are applied to the output terminals c and d of the microcomputer 32, respectively.
Is output for a fixed time A, and the motor 34 in the drive device 11 is normally rotated for a fixed time A through the motor drive circuit 33. The ice tray 13 swings clockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees). Subsequently, in step 166, the microcomputer 3
L and H are output to the two output terminals c and d respectively for a fixed time 2A, and the motor 34 is rotated in the reverse direction for a fixed time 2A. The ice tray 13 swings counterclockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees).

Then, in step 167, the motor 34 is normally rotated again. When the ice tray 13 returns to the horizontal position and the horizontal position detection switch 30 is turned on in step 41, the motor 34 is stopped in step 169. Then, after the pause time B has elapsed in step 170, step 171
If the completion time (time C) of the first swing period has not been reached, the process returns to step 165 again. This step 165
Through a series of operations from to step 169, the ice tray 13 intermittently rocks at a predetermined interval (pause time B) as shown in FIG.

In step 171, when the predetermined time (time C) of the first swing period is reached, the process proceeds to step 172 and the second swing period is started.

At step 172, H and L are output to the output terminals c and d of the microcomputer 32 for a fixed time B shorter than the fixed time A of the first swing period, respectively.
The motor 3 in the drive device 11 via the motor drive circuit 33.
4 is rotated forward for a certain time B. The ice tray 13 swings clockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 10 degrees). Then, in step 173,
L and H are output to the output terminals c and d of the microcomputer 32 for a fixed time 2B, respectively, and the motor 34 is rotated in the reverse direction for a fixed time 2B. The ice tray 13 swings counterclockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 10 degrees).

Then, in step 174, the motor 34 is normally rotated again. When the ice tray 13 is returned to the horizontal position and the horizontal position detection switch 30 is turned on in step 175,
In step 176, the motor 34 is stopped. Then, after the pause time B has elapsed in step 177, step 17
At 8, the voltage signal based on the temperature detected by the temperature sensor 51 and the second reference voltage corresponding to the ice making completion temperature (for example, -5 ° C) are compared, and the water in the ice making tray 13 is completely frozen to 0 ° C. Determine whether or not If the temperature detected by the temperature sensor 51 is higher than the ice making completion temperature, the process returns to step 172 again. By the series of operations from step 172 to step 176, the ice tray 13 swings intermittently at an angle smaller than the swing angle in the first swing period as shown in FIG.

In this ice making process, the cold air cooled by the cooler 8 by the blower 9 is cooled from the bottom of the ice tray 13 through the ventilation passages at the bottom of the ice tray 13, so that the ice making operation is performed on the bottom surface of the ice tray 13. The water surface side freezes at the end.

By adding the swing shown in FIG. 6 during ice making, the bubbles 57 can be collected on the freezing surface 56 before being taken into the ice, and can be lifted by the buoyancy to be released into the atmosphere.

At step 178, the voltage signal based on the temperature detected by the temperature sensor 51 and the ice making completion temperature (for example, -5 ° C.).
Is compared with the second reference voltage corresponding to the above condition to determine whether or not the water in the ice tray 13 is completely frozen and becomes 0 ° C. or less.
If the temperature detected by the temperature sensor 51 is lower than the ice making completion temperature, the second swing period and the second period are ended, and step 17
Proceed to 9.

The third period starts from step 179, and the cooling is continued to a sufficiently low temperature (for example, -15 ° C.) such that the ice in the ice tray 13 does not break even when the ice is released. Then, the voltage signal based on the temperature detected by the temperature sensor 51 is compared with the third reference voltage corresponding to the ice free temperature (for example, −15 ° C.), and the water in the ice tray 13 is completely frozen and the ice is released. Judge whether the temperature is low enough not to break even if it is broken. If the temperature detected by the temperature sensor 51 is lower than the temperature at which ice can be released,
Finish the ice making process.

Next, the ice removing step is carried out, but the ice removing step is the same as that of the first embodiment, and the detailed description thereof will be omitted.

As described above, according to this embodiment, even if gas components dissolved in water become bubbles on the freezing surface, they are aggregated before being taken into ice by rocking and rise by buoyancy. By letting it escape into the atmosphere, transparent ice without cloudiness can be made.

By making the swing angle in the second swing period smaller than the swing angle in the first swing period, the swing angle before the completion of ice making becomes smaller. Therefore, the shape of the ice is adjusted before the ice making is completed, so that the shape of the ice will not be deformed to be sharp in the direction away from the swing support shaft, and will not look bad, and will not be broken during ice removal. is there.

The tenth embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to the flowchart of FIG. 5 and the timing chart of FIG. The external structure of the automatic ice making device and the structure for mounting it on the refrigerator are the same as those of the first embodiment and the circuit diagram of the second embodiment, and the drawings and detailed description thereof are omitted.

The water supply process is the same as that of the first embodiment, and the detailed description thereof will be omitted. In the ice making process, first, at step 180, it is judged whether the door of the ice making chamber is open or closed. If it is open, the process proceeds to step 181, and if it is closed, the process proceeds to step 190.

If the door of the ice making chamber is closed, step 1
At 81, H and L are output to the output terminals c and d of the microcomputer 32 for a fixed time A, respectively, and the motor 34 in the drive device 11 is normally rotated for a fixed time A via the motor drive circuit 33. The ice tray 13 swings clockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees). Subsequently, in step 183, L and L are respectively applied to the output terminals c and d of the microcomputer 32.
H is output for 2 A for a certain time, and the motor 34 is output for 2 A for a certain time.
Reverse only A. The ice tray 13 swings counterclockwise and reaches a position rotated from the horizontal position by a predetermined angle (for example, 20 degrees).

Then, in step 185, the motor 34 is normally rotated again. In step 187, when the ice tray 13 returns to the horizontal position and the horizontal position detection switch 30 is turned on,
In step 188, the motor 34 is stopped. Then, after the pause time B has elapsed in step 189, step 19
Go to 0. In step 190, the voltage signal based on the temperature detected by the temperature sensor 51 is compared with the second reference voltage corresponding to the ice making completion temperature (for example, -5 ° C), and the water in the ice tray 13 is completely frozen to 0 ° C. Determine whether or not If the temperature detected by the temperature sensor 51 is higher than the ice making completion temperature,
It returns to step 181 again. By the series of operations from step 181 to step 188, the ice tray 13 intermittently swings at a predetermined interval (pause time B) as shown in FIG.

In this ice making step, the cold air cooled by the cooler 8 by the blower 9 cools from the bottom of the ice tray 13 through the ventilation passages at the bottom of the ice tray 13, so that the ice making operation is performed on the bottom surface of the ice tray 13. The water surface side freezes at the end.

By adding the swing shown in FIG. 6 during ice making, the bubbles 57 can be gathered on the freezing surface 56 before being taken into the ice and raised by buoyancy to be released into the atmosphere.

In step 190, the voltage signal based on the temperature detected by the temperature sensor 51 and the temperature at which ice can be released (for example, -15).
C.) is compared with a third reference voltage, and it is determined whether or not the temperature in the ice tray 13 has reached a sufficiently low temperature so that the water in the ice tray 13 is completely frozen and does not break even when ice is removed. If the temperature detected by the temperature sensor 51 is lower than the temperature at which ice can be released, the ice making process ends.

Here, when the ice making chamber door is opened when the swing is stopped during the ice making process, the routine proceeds from step 180 to step 190, and the swing period from step 181 to step 188 is skipped. That is, the rocking is not performed while the door of the ice making chamber is open.

When the ice making chamber door is opened during rocking during the ice making process, that is, between step 181 and step 188, step 182, step 184, step 186.
To step 191 in the subroutine.

For example, as shown at point C in FIG. 26, when the ice making chamber door is opened during the reverse rotation of the motor 34 at step 183, step 183 to step 19 in the subroutine.
Go to 1. Since the motor 34 is in reverse rotation, step 1
The routine proceeds from 91 to step 196, and in step 196, the motor 34 is normally rotated again. At step 197, the ice tray 13 is returned to the horizontal position and the horizontal position detection switch 30 is turned off.
If N, the motor 34 is stopped in step 194. Then, the ice tray 1 is opened while the ice making chamber door is open and until the next swing.
3 remains stationary in the horizontal position. When the ice making chamber door is closed, the subroutine is exited from step 195, the process returns to step 184 during the ice making process, and the above-described operation is continued.

Next, the ice removing step is carried out, but the ice removing step is the same as that of the first embodiment, and the detailed description thereof will be omitted.

As described above, according to the present embodiment, even if gas components dissolved in water become bubbles on the freezing surface, they are collectively buoyantly raised before being taken into ice by rocking. By letting it escape into the atmosphere, transparent ice without cloudiness can be made.

When the ice making chamber door is opened during rocking, the rocking is stopped and returned to the horizontal position to remain stationary until the next rocking.
Therefore, even if the ice making chamber door is opened during rocking, the ice tray immediately returns to the horizontal position, and even if the ice making chamber door is vigorously closed, it does not coincide with the timing at which the maximum angle is reached during rocking. Therefore, when the ice-making chamber door is closed vigorously, the ice tray reaches the maximum swinging angle and the water jumps up further and the water is spilled, or the spilled water freezes on the movable part and malfunctions occur. There is no.

[0186]

As described above, according to the present invention, an ice tray, a support shaft connected and fixed to one end of the ice tray, a drive device for rotating the ice tray around the support shaft, and By providing the ice making control means for operating the drive device to swing the ice tray about the support shaft from the horizontal position in the clockwise direction and the counterclockwise direction by 15 degrees or more and 30 degrees or less,
Even if gas components dissolved in water become bubbles on the freezing surface, they are aggregated before being taken into the ice by sufficient rocking force, rise by buoyancy and escape to the atmosphere, so there is no cloudiness. It is possible to make clear ice, and its practical effect is great.

The ice tray, the support shaft, the drive unit, and the drive unit from immediately after the completion of water supply from the water supply unit to the ice tray until the water stored in the ice tray is cooled to 0 ° C. For a first period of time, and until the first period of time until water completely freezes and drops to 0 ° C. or less, the drive device is operated to horizontally position the ice tray around the support shaft. From the second period during which the drive device is oscillated in the clockwise or counterclockwise direction, and the third period during which the drive device is stopped until the ice temperature becomes equal to or lower than a predetermined temperature of 0 ° C. or lower following the second period. By providing the ice making control means for controlling the ice making through the first, second and third periods, the ice making plate is dissolved in water until the water supply to the ice making plate is completed and the water is cooled to 0 ° C. to start freezing. Since the gas components that are present are not discharged to the outside of the ice crystal lattice, shaking The ice-making time can be shortened by stopping the ice-making process, promoting freezing, shaking only from the beginning to the end of freezing, and stopping the shaking after the completion of freezing. There is something that consists.

The ice tray, the support shaft, the drive unit, and the drive unit from immediately after the completion of water supply from the water supply unit to the ice tray until the water stored in the ice tray is cooled to 0 ° C. For a first period of time, and until the first period of time until water completely freezes and drops to 0 ° C. or less, the drive device is operated to horizontally position the ice tray around the support shaft. To the clockwise direction and the counterclockwise direction intermittently at predetermined intervals, and the second interval in which the interval of the rocking is gradually shortened, and the ice temperature is 0 ° C. following the second period.
By providing the ice making control means for performing the ice making control during the first, second and third periods of the third period in which the driving device is stopped until the temperature becomes equal to or lower than the predetermined temperature below, water is supplied to the ice making tray. Until the water is cooled to 0 ° C and freezing starts after completion, the gas components dissolved in the water are not discharged to the outside of the ice crystal lattice, so the rocking is stopped to promote freezing. Since the rocking is performed only from the beginning to the completion of the, and the rocking is stopped after the completion of the freezing, the ice making time can be shortened. Furthermore, since the amount of gas discharged is small at the beginning of freezing, the swing interval is lengthened, and the amount of gas discharged is increased as freezing progresses, so the swing interval is gradually reduced so that the swing interval is shortened. The ice making time can be further shortened by shortening the time to a very short time, and its practical effect is great.

The ice tray, the support shaft, the drive unit, and the drive unit from immediately after the completion of water supply from the water supply unit to the ice tray until the water stored in the ice tray is cooled to 0 ° C. For a first period of time, and until the first period of time until the water completely freezes and drops below 0 ° C., the drive device is intermittently operated to center the ice tray on the support shaft. Swing from the horizontal position in the clockwise and counterclockwise directions,
And a second period in which the swing speed is gradually increased, and the second period
In the first of the third period, the drive device is stopped until the ice temperature becomes equal to or lower than a predetermined temperature of 0 ° C. or lower, following the period.
By providing the ice making control means for performing the ice making control during the second and third periods, the water supply to the ice making tray is completed and the water becomes zero.
Until the ice begins to freeze after being cooled to ℃, the gas components dissolved in water are not discharged to the outside of the ice crystal lattice, so rocking is stopped to promote ice formation, and it is completed after ice formation begins. Since the rocking is performed only during the period up to and the rocking is stopped after the freezing is completed, the ice making time can be shortened. Furthermore, since the amount of gas discharged is small at the beginning of freezing, the rocking speed is slowed down, and as the amount of gas discharged is increased as the freezing progresses, the rocking speed is gradually increased so as to increase the rocking speed. Therefore, the ice making time can be further shortened, and its practical effect is great.

Further, the ice tray, the support shaft, the drive device, and the drive device are operated during ice making to rotate the ice tray about the support shaft clockwise from the horizontal position by a predetermined angle. And a clockwise swing to return to a horizontal position, and the drive device is operated to rotate the ice tray about the support shaft in a counterclockwise direction from the horizontal position by a predetermined angle to return to a horizontal position. By providing the ice making control means for alternately performing the motion and the motion with a pause time, the rocking is performed only in the clockwise direction and only in the counterclockwise direction without continuously rocking in the clockwise direction and the counterclockwise direction. Since the and are alternately performed with a pause time, the energization time of the motor can be halved, the life and reliability of the motor can be improved, and the practical effect thereof is great.

Also, the ice tray, the support shaft, the drive device, and the drive device are operated during ice making to move the ice tray from the horizontal position about the support shaft in the clockwise and counterclockwise directions. When the compressor is stopped during the ice making process, the ice making plate is stopped while the ice making tray is stopped and returned to the horizontal position and stopped. Since the chamber temperature rises, the ice making does not proceed and the effect of the swing cannot be obtained, so the swing is stopped. Therefore, the energization time of the motor is shortened by the OFF time of the compressor, and the durability of the motor can be improved. Then, when the compressor stops during swing, the motor reverses while the motor is rotating forward to return the ice tray to the horizontal position and stands still, while the motor reverses, the motor rotates forward to rotate the ice tray. , Return to a horizontal position and stand still. Therefore, since the ice tray does not stand still in a tilted state, irregular shaped ice is not formed, and its practical effect is great.

Further, the ice tray, the support shaft, the drive device, and the drive device are operated during ice making to move the ice tray from the horizontal position about the support shaft in the clockwise and counterclockwise directions. By oscillating, and when the defrosting of the cooler is started during ice making, by providing the ice making control means that stops the oscillating of the ice making plate and returns to the horizontal position and stands still until the defrosting ends. Since the temperature of the ice making chamber rises, the ice making does not proceed and the effect of the rocking cannot be obtained, so the rocking is stopped. Therefore, the energization time of the motor is shortened by the defrosting time, and the durability of the motor can be improved. And when defrosting is started during rocking,
While the motor is rotating in the forward direction, the motor rotates in the reverse direction to return the ice tray to the horizontal position and stands still. When the motor rotates in the reverse direction, the motor rotates in the forward direction to return the ice tray to the horizontal position and stands still. Therefore, since the ice tray does not stand still in a tilted state, irregular shaped ice is not formed, and its practical effect is great.

Further, the ice tray, the support shaft, the drive device, and the drive device are operated during ice making to move the ice tray from the horizontal position about the support shaft in the clockwise and counterclockwise directions. When oscillating, and when defrosting of the cooler is started during ice making, the oscillating ice tray is stopped and returned to the horizontal position to stop defrosting and stand still until the freezer temperature reaches a predetermined temperature or lower. By providing the control means, the ice making chamber temperature rises until the freezing chamber temperature reaches the predetermined temperature or less even after the defrosting ends, so the ice making does not proceed and the swinging effect cannot be obtained. To stop. Therefore, the energization time of the motor is shortened by the time required for the defrosting time and the temperature of the freezer compartment to reach the predetermined temperature or lower, and the durability of the motor can be improved. Then, when defrosting is started during swinging, the motor reverses while the motor is rotating forward to return the ice tray to the horizontal position and stands still, while the motor reverses, the motor rotates forward to rotate the ice tray. , Return to a horizontal position and stand still. Therefore, since the ice tray does not stand still in a tilted state, irregular shaped ice is not formed, and its practical effect is great.

Further, the ice tray, the support shaft, the drive device, and the drive device are operated during ice making to move the ice tray from the horizontal position about the support shaft in the clockwise and counterclockwise directions. A first swing period for swinging by swinging a predetermined angle;
Following the first swing period, the drive device is operated to move the ice tray from the horizontal position about the support shaft in the clockwise direction.
The ice making control is performed through a second swing period in which the swing is performed by swinging counterclockwise at an angle smaller than the swing angle in the first swing period, and the first and second swing periods. By providing the ice making control means for performing, the swing angle before the completion of ice making becomes small and the shape of the ice is adjusted before the completion of ice making, so the shape of the ice looks sharp in the direction away from the swing support shaft. It does not look bad when it is transformed into, or it does not break when ice is removed, and its practical effect is great.

Further, the ice tray, the support shaft, the drive device, and the drive device are operated during ice making to move the ice tray from the horizontal position about the support shaft in the clockwise and counterclockwise directions. By oscillating intermittently at regular intervals, by providing the ice making control means which stops the oscillating when the door of the ice making chamber is opened during the oscillating and returns to the horizontal position and stands still until the next oscillating, When the ice making chamber door is opened during rocking, the rocking is stopped and returns to the horizontal position and remains stationary until the next rocking. Therefore,
Even if the ice making chamber door is opened during rocking, the ice tray immediately returns to the horizontal position, so even if the ice making chamber door is vigorously closed, it does not coincide with the timing when the maximum angle is reached during rocking. Therefore,
When the ice-making chamber door is closed vigorously, the ice tray does not reach the maximum swinging angle and the water further jumps up and spills water, or the spilled water freezes on the moving parts and does not cause malfunction. However, there are some great practical effects.

[Brief description of drawings]

FIG. 1 is a sectional view of a refrigerator equipped with an automatic ice making device according to a first embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a main part of the automatic ice making device according to the first embodiment of the present invention.

FIG. 3 is an electric circuit diagram of the device.

FIG. 4 is an operation flowchart of the device.

FIG. 5 is an operation timing chart of the device.

6A is a cross-sectional view showing a stationary state of the ice tray, FIG. 6B is a cross-sectional view showing a state where the ice tray is rotated to the right side in the figure, and FIG. (D) is a cross-sectional view showing the state further rotated to the left side. (E) is a cross-sectional view when the figure is rotated to the right side in the figure and returned to the original state.

FIG. 7 is a correlation diagram between the swing angle and the transparency of ice in the device.

FIG. 8 is an electric circuit diagram of an automatic ice making device according to a second embodiment of the present invention.

FIG. 9 is an operation flowchart of the device.

FIG. 10 is an operation timing chart of the device.

FIG. 11 is an operation flowchart of the automatic ice making device according to the third embodiment of the present invention.

FIG. 12 is an operation timing chart of the device.

FIG. 13 is an operation flowchart of the automatic ice making device according to the fourth embodiment of the present invention.

FIG. 14 is an operation timing chart of the device.

FIG. 15 is an operation flowchart of the automatic ice making device according to the fifth embodiment of the present invention.

FIG. 16 is an operation timing chart of the device.

FIG. 17 is an operation flowchart of the automatic ice making device according to the sixth embodiment of the present invention.

FIG. 18 is a subroutine of the same flowchart.

FIG. 19 is an operation timing chart of the device.

FIG. 20 is an operation flowchart of the automatic ice making device according to the seventh embodiment of the present invention.

FIG. 21 is a subroutine of the same flowchart.

FIG. 22 is an operation timing chart of the device.

FIG. 23 is an operation flowchart of the automatic ice making device according to the eighth embodiment of the present invention.

FIG. 24 is a subroutine of the same flowchart.

FIG. 25 is an operation timing chart of the device.

FIG. 26 is an operation flowchart of the automatic ice making device according to the ninth embodiment of the present invention.

FIG. 27 is an operation timing chart of the device.

FIG. 28 is an operation flowchart of the automatic ice making device according to the tenth embodiment of the present invention.

FIG. 29 is a subroutine of the same flowchart.

FIG. 30 is an operation timing chart of the device.

FIG. 31 is a perspective view of a conventional automatic ice making device.

FIG. 32 is a side view showing the operation of the conventional example.

[Explanation of symbols]

 11 Drive device 12 Support shaft 13 Ice tray 27 Ice control means

Claims (10)

[Claims] 1. An ice tray for storing water supplied from a water supply device to make ice, a support shaft connected and fixed to one end of the ice tray, and a drive device for rotating the ice tray around the support shaft. And, during the ice making, the drive device is operated to swing the ice tray about the support shaft from the horizontal position in the clockwise direction and the counterclockwise direction by 15 degrees or more and 30 degrees or less, and the ice tray is made after the ice making is completed. An ice making device comprising an ice making control means for turning and reversing the ice to remove ice. 2. An ice tray that stores water supplied from a water supply device to make ice, a support shaft connected and fixed to one end of the ice tray, and a drive device that rotates the ice tray around the support shaft. And a first period in which the drive device is stopped immediately after the completion of the water supply from the water supply device to the ice tray until the water stored in the ice tray is cooled to 0 ° C., and the water is completely supplied after the first period. A second period in which the driving device is operated to rock the ice tray from the horizontal position in the clockwise direction and the counterclockwise direction around the support shaft until the ice plate is frozen to 0 ° C. or lower.
After the second period, the ice making control is performed through the first, second and third periods of the third period in which the driving device is stopped until the ice temperature becomes equal to or lower than a predetermined temperature of 0 ° C. or less, and the ice making is completed. An automatic ice-making device comprising an ice-making control means which later actuates the drive device to turn and reverse the ice-making tray to remove ice. 3. An ice tray for storing water supplied from a water supply device to make ice, a support shaft connected and fixed to one end of the ice tray, and a drive device for rotating the ice tray around the support shaft. And a first period in which the drive device is stopped immediately after the completion of the water supply from the water supply device to the ice tray until the water stored in the ice tray is cooled to 0 ° C., and the water is completely supplied after the first period. Until the temperature drops to 0 ° C. or below due to freezing, the ice tray is intermittently oscillated from the horizontal position around the support shaft in the clockwise and counterclockwise directions at predetermined intervals. And a second period in which the swinging interval is gradually shortened, and a third period following the second period in which the driving device is stopped until the ice temperature falls below a predetermined temperature of 0 ° C. or lower. Ice control is performed during the first, second, and third periods to make ice After completion, an automatic ice making device comprising an ice making control means for activating the driving device to turn and reverse the ice making tray to remove ice. 4. An ice tray for storing water supplied from a water supply device to make ice, a support shaft connected and fixed to one end of the ice tray, and a drive device for rotating the ice tray around the support shaft. And a first period in which the drive device is stopped immediately after the completion of the water supply from the water supply device to the ice tray until the water stored in the ice tray is cooled to 0 ° C., and the water is completely supplied after the first period. Until the temperature drops below 0 ° C. due to freezing, the drive device is intermittently operated to swing the ice tray from the horizontal position around the support shaft in the clockwise direction and the counterclockwise direction, and to swing the ice tray. The second period in which the movement speed is gradually increased, and the first and the third periods of the third period in which the driving device is stopped until the ice temperature becomes equal to or lower than a predetermined temperature of 0 ° C. or lower following the second period. 2 、 Through the 3rd period, the ice making control is performed, and after the ice making is completed, the driving device is operated. And an ice making control means for turning the ice making tray to turn the ice making to remove the ice. 5. An ice tray that stores water supplied from a water supply device to make ice, a support shaft that is fixedly connected to one end of the ice tray, and a drive device that rotates the ice tray around the support shaft. When the ice making tray is operated during ice making, the ice making tray is rotated clockwise from the horizontal position about the support shaft by a predetermined angle to return to the horizontal position, and the driving device is operated. The ice tray is rotated counterclockwise from the horizontal position about the support shaft by a predetermined angle in the counterclockwise direction and returned to the horizontal position. An ice making device comprising an ice making control means for turning and reversing the ice to remove ice. 6. An ice tray that stores water supplied from a water supply device to make ice, a support shaft that is fixedly connected to one end of the ice tray, and a drive device that rotates the ice tray around the support shaft. When the ice making tray is operated during the ice making, the ice making tray is oscillated clockwise and counterclockwise from the horizontal position about the support shaft, and when the compressor is stopped during the ice making, the ice making tray An automatic ice making device comprising: an ice making control means for stopping the rocking, returning to a horizontal position and standing still, and turning the ice making tray to turn the ice making to release the ice after the ice making is completed. 7. An ice tray for storing water supplied from a water supply device to make ice, a support shaft connected and fixed to one end of the ice tray, and a drive device for rotating the ice tray around the support shaft. And, when the ice making tray is rocked in a clockwise / counterclockwise direction from a horizontal position about the support shaft by operating the driving device during ice making, when the defrosting of the cooler is started during ice making, An automatic ice making device comprising: an ice making control means for stopping the swing of the ice making tray to return to a horizontal position and standing still until defrosting is completed, and after the ice making is completed, the ice making tray is rotated and reversed to remove ice. 8. An ice tray for storing water supplied from a water supply device to make ice, a support shaft connected and fixed to one end of the ice tray, and a drive device for rotating the ice tray around the support shaft. And, when the ice making tray is rocked in a clockwise / counterclockwise direction from a horizontal position about the support shaft by operating the driving device during ice making, when the defrosting of the cooler is started during ice making, Stop the rocking of the ice tray, return to the horizontal position and stop until the defrosting ends and the freezer temperature reaches a predetermined temperature or lower,
An automatic ice making device comprising: an ice making control means for turning the ice making tray to turn it off after the ice making is completed. 9. An ice tray for storing water supplied from a water supply device to make ice, a support shaft connected and fixed to one end of the ice tray, and a drive device for rotating the ice tray around the support shaft. A first swing period during which the drive device is operated during ice making to swing the ice tray about the support shaft from a horizontal position in a clockwise or counterclockwise direction at a predetermined angle;
After the rocking period, the drive device is operated to move the ice tray from the horizontal position about the support shaft in the clockwise and counterclockwise directions at an angle smaller than the rocking angle in the first rocking period. It comprises a second swing period for swinging, and ice making control means for performing ice making control through the first and second swing periods and for turning the ice making tray to turn and reverse the ice after completion of ice making. Automatic ice making device. 10. An ice tray that stores water supplied from a water supply device to make ice, a support shaft that is fixedly connected to one end of the ice tray, and a drive device that rotates the ice tray around the support shaft. During the ice making, the driving device is operated to swing the ice tray about the support shaft from the horizontal position in the clockwise / counterclockwise direction intermittently at regular intervals. When the door is opened, it stops swinging, returns to a horizontal position, stays until the next swing, and after the completion of ice making, the ice making control means for turning and reversing the ice making tray to perform ice removal .