KR20110037609A - Method for ice making and ice maker apparatus - Google Patents

Abstract

The present invention relates to an ice making apparatus provided in a refrigerator, and by making ice making ice having a spherical shape through the ice making apparatus, an ice making apparatus capable of preventing entanglement between ice in an ice bank and an ice making using the same. It is about a method.

Deicing, ice, tangle, ice bank, ice

Description

Ice making device and ice making method using same {Method for Ice Making and Ice Maker Apparatus}

The present invention relates to an ice making device and an ice making method using the same for making ice having a spherical shape of the ice iced through the ice making device provided in the refrigerator.

In general, the refrigerator includes a body in which a freezing compartment F and a refrigerating compartment R are partitioned by partition walls, and a refrigerating cycle device for keeping the freezing compartment F and the refrigerating compartment R at a low temperature.

The main body includes a freezing compartment door rotatably connected to the main body to open and close the freezing compartment, and a refrigerating compartment door for opening and closing the refrigerating compartment.

The refrigeration cycle apparatus includes a compressor (not shown) for compressing a low temperature low pressure gas refrigerant, a condenser (not shown) in which the high pressure refrigerant compressed by the compressor is radiated to outside air, and condensed, and the refrigerant condensed in the condenser is An expansion device (not shown) to be depressurized, and an evaporator (not shown) that is adiabatic expansion of the refrigerant in the expansion device takes the heat of the freezer compartment (F) and the refrigerating chamber (R) evaporated.

In recent years, an automatic ice making apparatus for ice-making after taking ice out of the freezer compartment F is installed.

Ice iced in the conventional ice making apparatus will be described with reference to the drawings.

Referring to FIG. 1, the shape of ice that is iced in the conventional ice maker is iced into a crescent shape (a) or a rectangular shape (b), and the ice having the above shape is Many are stored inside the ice bank.

As described above, when the ice having a crescent or rectangular shape is stored in an ice bank, the ice has a flat surface having a flat surface, and thus the planes are stuck or entangled with each other.

The conventional ice is such that the volume of the ice becomes larger than the initial ice making, so that the user needs to take an urgent countermeasure to cause the inconvenience of scooping up the tangled ice or finding a single ice that does not stick to each other. It was set as.

Disclosure of Invention An object of the present invention is to provide an ice making apparatus capable of preventing entangled or ice sticking to each other through a refrigerator ice making apparatus.

An object of the present invention is to provide an ice making apparatus that can make ice deiced by an ice making machine in a spherical shape.

It is an object of the present invention to provide a control method of an ice making apparatus that can improve consumer's product reliability and satisfaction with a refrigerator.

In order to achieve the above object, an ice making apparatus according to the present invention includes an ice making tray; A cover tray provided to ice the ice in the ice making space formed by the ice tray; And a driving unit for moving the cover tray to perform ice making, and rotating the ice tray to take out ice after taking out ice.

The cover tray is disposed to be accommodated in the ice tray.

The ice making tray is provided with a first ice making groove opened toward the upper portion, and the cover tray has a second ice making groove having a size corresponding to that of the first ice making groove.

The ice making tray further includes a first extension part extending outward of the first ice making groove and having a storage area to store water.

When the cover tray is coupled to the ice tray, the second ice making groove further includes an air bleed hole provided in the center of the upper surface of the second ice making groove to discharge the air remaining in the ice making space to the outside.

The cover tray further includes a second extension part extending outward of the second ice making groove and bent at an end portion thereof.

The second extension part may further include a guide member for guiding the moving direction of the water so that water is introduced into the first ice making groove when the second extension part is in contact with the first extension part.

The guide member is inclined upward from the outside of the second extension to the inside.

The guide member is made of an elastic material.

The cover tray is downwardly operated so as to form an ice making space in which a first ice making groove and a second ice making groove are formed in a spherical shape while being disposed to face the ice making tray and coupled to the ice making tray.

The ice making tray further includes a sealing member for preventing water overflow when combined with the cover tray.

The sealing member is disposed inside the first extension part.

The ice making tray is provided with a flow path unit to move water between the plurality of first ice making grooves spaced apart.

The flow path portion is characterized by having a different diameter.

The ice making tray further includes a heating unit for separating the generated ice from the first and second trays.

The heating unit is disposed outside the cover tray.

The ice making tray is made of a metal having excellent thermal conductivity, and the cover tray is made of plastic.

The drive unit includes a first drive unit for raising and lowering the cover tray; It comprises a second drive unit for rotating the ice tray.

A water supply step of supplying water to the ice tray while the cover tray is spaced apart from the ice tray; Operating the cover tray such that water flows into the ice-making space generated by combining the cover tray and the ice tray; An ice making step for making ice to make ice; A heating step of performing heating to melt a part of the surface of the ice which has been de-iced; And an ice step for performing ice so that the iced ice is separated from the ice tray.

The ice-making step may include: a first ice-making step of moving the cover tray preferentially from an ice tray and a cover tray provided in the ice tray; And a second ice-making step of rotating the ice-making tray so that the ice stored in the ice-making tray is iced.

According to another aspect of the present invention, there is provided an ice making method including: an ice making space forming step of forming an ice making space by closely coupling an ice making tray and a cover tray; A water supply step of supplying water to the ice making space; An ice making step of performing ice making in a state where water supply is completed; And a heating step of heating to melt a portion of the surface of the ice that has been de-iced; and an ice-making step of carrying out ice to separate the iced ice.

As described above, the ice making apparatus according to the present invention and the ice making method using the same have the effect of preventing the ice iced through the ice making apparatus from being entangled or sticking to each other to maintain the original shape of the ice.

An ice making apparatus and an ice making method using the same according to the present invention have an effect of providing a refrigerator equipped with an ice making apparatus capable of making ice in a spherical shape.

An ice making apparatus and an ice making method using the same according to the present invention have an effect of improving the satisfaction and reliability of a product by providing a refrigerator which is convenient for a consumer to use.

Hereinafter, an embodiment of an ice making apparatus and an ice making method using the same according to the present invention will be described with reference to the accompanying drawings. For convenience of description, the first and second trays will be described based on a single arrangement.

2 to 3, in the ice making apparatus according to the present invention, an ice making tray 110 and a cover tray 120 are combined to form an ice making space, and ice or ice is formed in the ice making space. In order to make ice having a shape, the ice tray 110 may include an ice making tray 110 that receives water through the water supply unit 300, and a cover tray 120 that faces the ice tray 110.

The ice tray 110 is provided with a shaft on one side and a support shaft on the other side of the ice tray so as to be rotatable inside the ice maker.

The shaft is connected to the driving unit 200, which will be described later, is a connecting shaft for rotating the ice tray 110, the support shaft is made to be fixed to the inside of the housing when the ice tray 110 is rotated.

The cover tray 120 is installed in the housing so that the cover tray 120 can be moved up and down in the up and down directions while being disposed above the ice making tray 110.

The water supply unit 300 supplying water to the ice making tray 100 may have a water supply structure that is commonly used, or may have a separate configuration. This will be described later.

The cover tray 120 is disposed to be accommodated in the ice making tray 110. Because, in order to ice the ice of the spherical shape, the first and second trays 110 and 120 should be arranged to maintain the spherical shape, and the cover tray 120 should be accommodated inside the ice tray 110 as described above. This is because the spherical shape is maintained.

The ice making tray 110 is provided with a first ice making groove 112 opened toward the upper portion, and the cover tray 120 has a second ice making groove 122 having a size corresponding to that of the first ice making groove 112. It is made to have.

The ice making tray 110 further includes a first extension part 114 extending outward of the first ice making groove 112 and having a storage area to store water. 1 is inclined upwardly to the outside of the ice making groove (112).

The first extension part 114 is a place where water to be introduced into the first ice making groove 112 is temporarily stored, and an extension length extending outwardly according to the size of the first ice making groove 112 is changeable. .

The reason why the first extension part 114 is bent upward is to prevent a phenomenon that overflows to the outside when water is introduced through the water supply part 300.

The second ice making groove 122 provided in the cover tray 120 further includes an air bleed hole 122a at the center of the upper surface. The air bleed hole 122a is provided to discharge the air remaining in the ice making space to the outside.

The air scavenging hole 122a is located at the center of the upper surface of the cover tray 120. When the ice tray 110 and the cover tray 120 are coupled, the air in the second ice making groove 122 is smoothly discharged. At the same time, even if excess water overflows through the air bleed hole 122a in a state where all of the water flows into the second ice making groove 122, the air bleed hole 122a is moved to the second ice making groove 122. To minimize it by placing it at the outermost point of the

The size and number of the air bleed holes 122a are not particularly limited, but may be positioned as shown in the drawings or changed to other forms for stable air discharge.

The ice making tray 110 is provided with a flow path part 111 to move water between the plurality of first ice making grooves 112 spaced apart from each other. The flow path part 111 may have the same diameter or have different diameters.

This is because, in order to stably supply water to the inside of the other ice making groove spaced apart from the first ice making groove 112 disposed adjacent to the water supply part 300, the flow path part 111 disposed adjacent to the water supply part 300. ) Can be made to have a diameter relatively larger than the diameter of the flow path portion spaced apart.

The diameter change of the flow path part 111 is to be changed finely by the water to stably flow into the first ice making groove 112 is arranged a plurality of spaced apart.

In addition, when the first ice making grooves 112 are arranged in two rows, a bridge flow path connecting the first ice making grooves 112 may be further provided. The bridge flow passage is provided with the flow of water through the flow passage portion 111 to provide a more stable and rapid inflow of water.

The first extension part 114 may extend upwardly outwardly of the first ice making groove 112. In this case, the second extension part 224 is also made to be symmetrical with the first extension part 114.

Referring to FIG. 4, the cover tray 120 further includes a second extension part 124 extending outward of the second ice making groove 122 and having an end bent upward.

The cover tray 120 has a portion of the water overflowed by the second extension part 124 bent upward even when water overflows through the air bleed hole 122a to the outside of the cover tray 120. It will not flow down or enter the housing.

The second extension part 124 further includes a guide member 124a for guiding the movement direction of the water so that the water flows inwardly of the first ice making groove 112 when it comes in contact with the first extension part 114. do. The guide member 124a guides the water accommodated in the first extension part 114 to move toward the first ice making groove 112.

The guide member 124a is inclined upward from the outside of the second extension part 124 toward the inside and is made of an elastic material. Examples include rubber or silicone and use materials that are harmless to humans.

The reason why the guide member 124a is inclined is to sequentially contact the guide member 124a from the outermost part of the first extension part 114 to the position where the first ice making groove 112 is located, and thus, the first ice making groove 112 is formed. To move the water to where it is located.

In the state facing the ice tray 110, the ice making space where the first ice making groove 112 and the second ice making groove 122 are combined is downwardly operated so as to form a spherical shape so as to be coupled to the ice making tray 110. .

The ice tray 100 is provided with a sealing member 102 to prevent water overflow.

The sealing member 102 is disposed inside the first extension 114. That is, by being installed inside the bent of the first extension portion 114, it causes a sealing effect by the surface contact with the guide member 124a to prevent the water overflow in the ice making tray (100).

The ice making tray 100 is provided with a heating unit 400 to separate the generated spherical ice from the first and second trays 110 and 120.

The heating unit 400 is disposed outside the cover tray 110. Preferably, it may be installed in close contact with the outside of the second ice making groove 122, or may be arranged spaced apart from a predetermined interval.

The heating unit 400 uses a resistance heating element that is operated by electricity, but may cope with other heating elements.

According to another embodiment of the heating unit 400, the ice making tray 110 and the cover tray 120 are disposed outside the contact portion in contact with each other. Specifically, it is arrange | positioned on the 2nd extension part 124 of the cover tray 120. FIG. The reason for this arrangement is that, when heating is performed in the outer center of the ice iced in a spherical shape, the ice is more smoothly made.

The ice tray 110 is made of a metal having excellent thermal conductivity, and the cover tray 120 is made of plastic. For example, the ice making tray 110 is preferably made of aluminum.

The driving unit 200 includes a first driving unit 210 for raising and lowering the cover tray 120; It is configured to include a second drive unit 220 for rotating the ice tray 110.

The first driving unit 210 is a rack gear (not shown) is disposed so as to move up and down by a separately provided motor, or guides on one side to raise and lower the entire cover tray 120 toward the ice tray 110. Bars may be provided.

The second drive unit 220 is formed so that a plurality of gears are engaged, the ice tray 110 is rotated by an angle of 90 degrees by the combination of the gears.

The control method for controlling the driving apparatus according to the present invention includes a water supply step of supplying water to the ice making tray 110 in a state where the cover tray 120 is spaced apart from the ice making tray 110; A step (ST120) of operating the cover tray 120 so that water flows into the ice-making space generated by combining the cover tray 120 and the ice making tray 110; An ice making step (ST300) for making ice to make ice; A heating step of performing heating to melt a part of the surface of the ice that has been de-iced (ST400); And an ice step (ST500) of performing ice so that the iced ice is separated from the ice tray 110.

The icing step (ST500) may include a first icing step (ST510) in which the cover tray is preferentially moved among the ice making tray and the cover tray provided in the ice making tray; And a second ice making step (ST520) in which the ice making tray is rotated so that the ice stored in the ice making tray is iced.

According to another aspect of the present invention, there is provided an ice making space (ST100 ') for forming an ice making space by closely coupling an ice making tray 110 and a cover tray 120; A water supply step (ST200 ') of supplying water to the ice making space; An ice making step (ST300 ') for performing ice making in a state where water supply is completed; A heating step (ST400 ') for heating to melt a part of the surface of the ice in which ice making is completed; And an ice step (ST500 ') for performing ice to separate the iced ice.

The first control method of the two embodiments according to the control method of the ice making device shows how the ice is iced by combining after the water supply in the state in which the ice tray and the cover tray are separated, the second control method first It shows how the water supply is made later with the tray and the cover tray combined.

The main difference between the two control methods is the timing at which watering timing occurs.

The operating state of the ice making apparatus and the ice making method using the same according to the present invention configured as described above will be described with reference to the drawings.

Referring to FIG. 4, the controller controls the ice tray 110 in a state as shown in the figure so that water is stably supplied to the ice tray 110 before water is supplied through the water supply unit 300. The cover tray 120 operates the first driving unit 210 and the second driving unit 220 to be spaced apart from the upper surface of the ice tray 110 by a predetermined distance.

The distance of the cover tray 120 is not particularly limited, but is spaced within the layout range of the housing.

In the above state, the water introduced through the water supply unit 300 starts to be supplied to the ice making tray 110 (ST100). The amount of water supplied to the ice making tray 110 is sensed to be supplied to the water supply unit 300 through a separate flow sensor, or the amount of water supplied is controlled so as to supply only the amount to be supplied to the ice making tray 110 by the controller. .

Water introduced into the ice making tray 110 is supplied to another first ice making groove spaced apart from the water supply part 300 through the flow path part 111.

The flow path 111 is connected to allow water to flow between other first ice making grooves spaced apart from each other when water is supplied to the first ice making groove 112 (see FIG. 2). Water is supplied to the grooves 112.

After all of the water supplied is supplied to the first ice making groove 112, the water is stored in the first extension part 114 having the storage area. Water stored in the first extension part 114 is stored only as much as the amount of water flowing into the second ice making groove 122 to be described later.

Referring to FIG. 5, when the water supply is completed, the controller operates the first drive unit 210 so that the ice making tray 110 and the cover tray 120 have a spherical shape, and the cover tray 120 makes the ice tray. To be operated downwards towards (110).

The ice tray and cover tray operate in detail as follows.

The driving unit 200 operates the first driving unit 210 so that the cover tray 120 moves toward the ice making tray 110 so that the cover tray 120 gradually descends toward the ice making tray 110.

In this case, the cover tray 120 in close contact with the upper surface of the ice making tray 110 may be in close contact with the ice making tray 110 while maintaining the same surface pressure.

The state in which the water supplied to the ice making tray is moved to the cover tray will be described.

First, the guide member 124a is sealed while surface contact is made with the sealing member 102, and the ice tray 110 is formed even when the cover tray 120 is in close contact with the ice tray 110. To prevent water overflow.

The guide member 124a is made of silicon having elastic force, and is elastically deformed while the above operation is performed, thereby preventing the gap between the first extension part 114 and the second extension part 124.

As the cover tray 120 is lowered, water stored between the first extension part 114 and the second extension part 124 by the guide member 124a is formed in the first ice making groove 112 as shown by the arrow in the figure. Move toward).

6 to 7, the cover tray 120 is in close contact with the ice making tray 110, and one surface of the guide member 124a and the upper surface of the first extension part 114 are in contact with each other.

The guide member 124a comes into contact from the bent position corresponding to the extended outermost point of the first extension part 114.

When the first driving unit 210 continues to operate downward in the downward direction of the cover tray 120, the water stored in the first extension part 114 is all moved toward the first ice making groove 112 and the guide member is moved. 124a is in close contact with the upper surface of the first extension 114 in the inward direction from the bent bending point of the first extension 114, the ice tray 110 and the cover tray 120 is in close contact (ST200).

In addition, water positioned in the first extension part 114 flows into the second ice making groove 122, and air inside the second ice making groove 122 is shown in the drawing through the air bleed hole 122 a. As it is discharged to the outside.

The ice to be iced in a spherical shape, the air remaining during ice making, or if not properly discharged, the ice quality is reduced, the ice may be crushed finely after ice, so the air is reliably discharged through the air bleed hole (122a) It is preferable to make it.

In addition, when air is discharged to the outside of the second ice making groove 122 through the air bleed hole 122a, even when water overflows to the outside of the air bleed hole 122a, By being accumulated by the cover, it does not flow outside the cover tray 120 or inside the housing.

Referring to FIG. 8, if the cover tray 120 is maintained in a state in which the cover tray 120 is completely in close contact with the ice making tray 110, ice is supplied while cold air is supplied from the upper side of the cover tray 120. (ST300).

In the ice making, the cover tray 120 is made of aluminum for quick ice making of ice in the ice making tray 100, so that the cold air supplied to the cover tray 120 can be quickly transferred to the ice making tray 110. .

The cover tray 120 is moved along the outer side of the cover tray 120 having the supplied cold air in a spherical shape, and can stay in the cover tray 120 for a long time by the bent structure of the second extension part 124. Will be.

Referring to FIG. 9, when all the ice making is completed, the control unit applies power to the heating unit 400 for ice-making, thereby heating the heating unit 400 to melt the interface of the ice iced in the ice making tray 100. Control (ST400).

The heating part 400 may be disposed between the second extension part 124 and the air bleed hole 122a provided in the cover tray 120 or on the second extension part 124.

In the latter case, when the heating unit 400 is heated, heat conduction is performed through the upper and lower contact surfaces of the ice making tray 110 and the cover tray 120, respectively, so that the ice surface and the first and second ice making grooves 112 and 122 are made. By uniformly melting the interface between the), more smooth ice can be achieved.

At the point where the first extension part 114 and the second extension part 124 are in surface contact with each other during ice making, the water may partially be infiltrated by the water, but the heating is performed by the heating part 400 to be in an ice state. As the frozen portion is thawed, the ice can be stably made during the ice process to be described later.

Referring to the drawings, the iced state in the ice making tray will be described.

Referring to FIG. 10, the control unit operates the first driving unit 210 to separate the cover tray 120 from the ice making tray 110 and to elevate upward (ST510).

The height at which the cover tray 120 is raised and lowered is relatively higher than the height at which the cover tray 120 is spaced apart when water is first supplied to the ice making tray 110.

Because the ice tray 110 is to be rotated in order to ice the ice iced in the ice tray 110 to the ice bank, the cover tray 120 is operated as described above.

At the time of the ice, since the ice is already melted by the heating part 400 at the contact point between the first extension part 114 and the second extension part 124, as described above, the cover tray 120 has an ice making tray ( Smoothly spaced at 110).

Referring to FIG. 11, in a state in which the cover tray 120 is raised and lowered, the control unit operates the second driving unit 220 to rotate the ice tray 110 in the direction of the arrow (a state) and to make ice downward. The tray 110 is rotated completely (ST520).

In the rotated ice tray 110, ice iced in the first ice making groove 112 is accommodated in the ice making tray by its own weight. Since the received ice has a spherical shape, the contact surfaces where ice is in contact with each other are minimized even in a case where a plurality of pieces of ice are stored, so that they are not tangled or stuck together.

In some cases, the guide member 124a and the sealing member 102 described in this embodiment may be used in a non-installed state.

Another embodiment of the ice-making method of the ice making apparatus according to the present invention will be described with reference to the drawings.

In the ice making method according to another embodiment, the controller controls the driving unit 200 so that the ice making tray 110 and the cover tray 120 are preferentially coupled (ST100 ') without receiving water to the ice making tray 110. do.

The reason for this is that, when water is injected while the ice making tray 100 first forms an ice making space, freezing at the portion where the first and second extensions 114 and 124 are in surface contact is prevented, and ice making is performed. This is because the speed is also improved.

In a state in which the first and second trays 110 and 120 are coupled as above, the water supplied through the water supply unit 300 is injected through the air bleed hole 122a or as a separate water supply hole (not shown) for water supply. It is injected (ST200 ').

In the present embodiment, the water supply hole is not shown, and it will be described as changing the diameter of the air draining hole to simultaneously perform the water supply hole and the air draining hole.

When all of the water supply is completed, cold air is supplied to the upper portion of the cover tray 120 to perform ice making (ST300 ').

When the ice making is completed, the control unit applies power to the heating unit 400 to melt the ice interface (ST400 ') and elevate the cover tray to the upper portion of the ice tray 110.

Then, the ice tray 110 is rotated to ice the ice to the ice tray (ST500 ').

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation in the scope of the appended claims. It will be understood by those skilled in the art that various modifications may be made and equivalents may be resorted to without departing from the scope of the appended claims.

1 is a view showing the shape of ice ice in a conventional ice making apparatus.

Figure 2 is a perspective view of the ice making apparatus according to the present invention.

3 is a front view of the ice making apparatus according to the present invention.

Figure 4 is a cross-sectional view showing an ice tray according to the present invention.

5 to 11 is an operating state of the ice tray according to the present invention.

12 is a flow chart showing a control method of the ice making apparatus according to the present invention.

Figure 13 is a flow chart showing another embodiment of the control method of the swallow according to the present invention.

* Description of the symbols for the main parts of the drawings *

100: ice tray 110: ice tray

112: first ice making groove 120: cover tray

122: second ice making groove 122a: air bleed hole

124: second extension portion 124a: guide member

400: heating unit 200: driving unit

Claims (21)

Ice tray; A cover tray provided to ice the ice in the ice making space formed by the ice tray; And And a drive unit for moving the cover tray to perform ice making and rotating the ice tray to take out ice after taking out ice. According to claim 1, And the cover tray is disposed to be accommodated in the ice tray. According to claim 1, The ice tray is It is provided with a first ice making groove that opens toward the top, In the cover tray Ice making apparatus comprising a second ice making groove having a size corresponding to the first ice making groove. The method of claim 3, The ice making tray An ice making apparatus, comprising: a first extension portion extending out of the first ice making groove and having a storage area to store water. The method of claim 3, In the second ice making groove When the cover tray is coupled to the ice tray, the ice making apparatus further comprises an air bleed hole provided in the center of the upper surface of the second ice making groove to discharge the air remaining in the ice making space to the outside. The method of claim 3, The cover tray, Ice making apparatus, characterized in that it further comprises a second extension extending outwardly of the second ice making groove, the end is bent. The method according to any one of claims 4 to 6, The second extension portion Ice making apparatus further comprises a guide member for guiding the direction of movement of the water so that the water flows in the inner direction of the first ice making groove when contacted with the first extension. 8. The method of claim 7, The guide member is Ice making apparatus characterized in that the inclined upward toward the inner side from the second extension. 8. The method of claim 7, The ice making apparatus, characterized in that the guide member is made of an elastic material. The method of claim 3, The cover tray And an ice making space in which the first ice making groove and the second ice making groove are combined to form a spherical shape while being disposed to face the ice making tray. According to claim 1, The ice making tray further comprises a sealing member for preventing water overflow when combined with the cover tray. 12. The method of claim 11, The ice making device, characterized in that the sealing member is disposed inside the first extension. The method of claim 3, The ice making tray Ice making apparatus characterized in that the flow path portion is provided so that the water moves between the plurality of spaced apart first ice making groove. The method of claim 13, The flow path part Ice making apparatus characterized by having a different diameter. According to claim 1, The ice making tray Ice making apparatus further comprises a heating unit for separating the generated ice in the first and second trays. The method of claim 15, The heating unit Ice making apparatus, characterized in that disposed on the outside of the cover tray. According to claim 1, The ice making tray is made of a metal having excellent thermal conductivity, Ice tray, characterized in that the cover tray is made of plastic. According to claim 1, The driving unit A first driving part which raises and lowers the cover tray; Ice making apparatus comprising a second drive for rotating the ice tray. A water supply step of supplying water to the ice tray while the cover tray is spaced apart from the ice tray; Operating the cover tray such that water flows into the ice-making space generated by combining the cover tray and the ice tray; An ice making step of making ice to make ice ice; A heating step of performing heating to melt a part of the surface of the ice which has been de-iced; And And a deicing step of performing the deicing so that the iced ice is separated from the ice making tray. The method of claim 19, The ice step A first icing step of moving the cover tray preferentially from an ice making tray and a cover tray provided in the ice making tray; And a second ice-making step of rotating the ice-making tray so that the ice stored in the ice-making tray is iced. An ice making space forming step in which the ice making tray and the cover tray are tightly coupled to form an ice making space; A water supply step of supplying water to the ice making space; An ice making step of performing ice making in a state where water supply is completed; A heating step of performing heating to melt a part of the surface of the ice which has been de-iced; and And a deicing step of performing the deicing so that the iced ice is separated.

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