KR102737086B1 - Ice maker and refrigerator - Google Patents

Abstract

The ice maker of the present invention comprises an upper assembly including an upper tray having an upper chamber formed concavely toward the upper side to define an upper side of an ice chamber filled with water to produce ice, an upper supporter contacting a first side of the upper tray to support the first side, and an upper case contacting a second side of the upper tray and coupled with the upper supporter, a lower tray having a lower chamber formed concavely toward the lower side to define a lower side of the ice chamber, a lower supporter supporting the lower side of the lower tray, and a lower case at least partially covering the upper side of the lower tray, the lower assembly being rotatably connected to the upper assembly, and an ejector having an ejecting pin for separating ice from the ice chamber after ice making is completed.

Description

Ice maker and refrigerator

This specification relates to an ice maker and a refrigerator.

A refrigerator is a home appliance that stores food at a low temperature in an internal storage space sealed by a door.

The above refrigerator can keep stored food in a refrigerated or frozen state by cooling the inside of the storage space using cold air.

Usually, an ice maker is provided inside the refrigerator to make ice.

The above ice maker is configured to make ice by receiving water supplied from a water source or water tank into a tray.

In addition, the ice maker is configured to be able to separate the ice that has been made from the ice tray by heating or twisting.

This type of ice maker, which automatically supplies and removes ice, is formed to open upwards and scoop up the formed ice.

Ice produced in an ice maker of this type of structure has at least one flat surface, such as a crescent or cubic shape.

Meanwhile, if the ice is formed into a spherical shape, it can be more convenient to use the ice and provide a different experience to the user. In addition, when storing the ice, the area of contact between the ice pieces can be minimized, thereby minimizing the ice from sticking together.

Prior literature, Korean Patent Publication No. 10-1850918, includes an ice maker.

The ice maker of the prior art includes an upper tray having a plurality of hemispherical upper cells arranged therein and a pair of link guide portions extending upward from both side ends; a lower tray having a plurality of hemispherical lower cells arranged therein and being rotatably connected to the upper tray; a rotational shaft connected to the rear ends of the lower tray and the upper tray so that the lower tray rotates with respect to the upper tray; a pair of links having one end connected to the lower tray and the other end connected to the link guide portion; and an upper ejecting pin assembly having both ends respectively connected to the pair of links while being fitted into the link guide portions and moving up and down together with the links.

Additionally, in the case of the prior art, when the lower tray rotates, a lower ejection pin assembly is included that is fixed to pressurize the lower tray.

When the lower tray is pressurized by the lower ejection pin assembly, the ice in the lower tray is separated from the lower tray.

At this time, as the load applied to the lower ejection pin assembly increases, there is a possibility that the lower ejection pin assembly may become deformed.

Additionally, due to tolerances in the motor gears, the lower tray may not reach the maximum ice removal position, or the lower ejection pin assembly may not sufficiently pressurize the center of the lower tray, resulting in not all ice being separated from the lower tray.

Additionally, there is also the problem that the load on the motor that rotates the lower tray increases as a large amount of ice is frozen at the same time.

Additionally, a problem may occur where the upper ejection pin assembly cannot be inserted into the air hole of the upper tray as the upper ejection pin assembly moves left and right or back and forth.

The present invention provides an ice maker and a refrigerator including the same, in which a lower ejection pin can make line or surface contact with a spherical lower chamber, and a pressure force can be properly transmitted as the contact area increases.

In addition, the present invention provides an ice maker and a refrigerator including the same in which a lower ejection pin is extended so that a pressing force can be properly transmitted to the center of a spherical lower chamber, and a sufficient pressing force is transmitted to the lower chamber even if the lower assembly does not reach the maximum freezing position due to a tolerance of a motor gear.

In addition, the present invention provides an ice maker and a refrigerator including the same which can solve the problem of ice breaking when pressure is concentrated on the ice during freezing.

In addition, the present invention provides an ice maker and a refrigerator including the same, which prevents the occurrence of left-right or forward-backward flow when the upper ejector moves up and down for ice ejection, thereby allowing smooth introduction of the upper ejecting pin into the inlet opening of the upper tray.

In addition, the present invention provides an ice maker and a refrigerator including the same in which a reduction in the distance that can be moved up and down is prevented by an up and down guide for stable up and down movement of the upper ejector.

The ice maker of the present invention may include an upper assembly having an upper tray having a hemispherical upper chamber; and a lower assembly having a lower tray having a hemispherical lower chamber.

Additionally, the upper assembly may include an upper tray having an upper chamber formed concavely upward to define an upper side of an ice chamber in which water is filled and ice is formed, an upper supporter that contacts a first surface of the upper tray and supports the first surface, and an upper case that contacts a second surface of the upper tray and is coupled with the upper supporter.

Additionally, the lower assembly includes a lower tray having a lower chamber formed concavely downward to define a lower side of the ice chamber, a lower supporter supporting a lower side of the lower tray, and a lower case at least partially covering an upper side of the lower tray, and can be rotatably connected to the upper assembly.

Additionally, after ice making is completed, an ejector having an ejecting pin for separating ice from the ice chamber may be included.

Spherical ice can be created by the upper chamber and the lower chamber, and the created ice can be separated from the upper chamber and the lower chamber by the rotation of the lower assembly.

Additionally, the ejector may include an upper ejector having an upper ejecting pin for separating ice from the upper tray and a lower ejector having a lower ejecting pin for separating ice from the lower tray.

In addition, the upper ejector includes an upper ejector body formed in a horizontal direction and an upper ejecting pin formed to extend vertically from a lower side of the ejector body, and at both ends of the ejector body, separation-prevention protrusions protruding in a direction intersecting the ejector body and upper and lower guides protruding in the same direction as the upper ejecting pin may be provided.

Additionally, the upper and lower guides may be inclined in a direction from the center of the ejector body toward the separation-prevention protrusion.

Additionally, the upper case may include an interference prevention groove into which the upper and lower guides are introduced.

Additionally, the interference prevention groove may be formed symmetrically at the center of the upper case.

Additionally, the upper case may include one or more ribs formed adjacent to the interference prevention groove in at least one of an upward and downward direction.

Additionally, the lower ejector may include a lower ejector body and a plurality of lower ejecting pins protruding from the lower ejector body.

Additionally, the lower ejection pin may be provided with a pin body protruding from the lower ejector body and a pressurizing portion formed by extending from the pin body.

Additionally, the fin body can be formed in a curved shape.

Additionally, the pressurizing portion may have a concave groove formed at an end that comes into contact with the lower tray.

Additionally, the pressurizing portion may include a pressurizing slope that contacts the lower tray.

Additionally, the pin body and the pressurizing portion can be bent to form a certain angle.

A refrigerator according to another aspect may include a cabinet having a freezer; a housing having the freezer; and an ice maker installed within the housing.

The ice maker may include an ejector having ejecting pins for separating ice from the ice chamber after ice making is completed.

According to the proposed invention, since the upper part of the lower ejection pin is formed in a shape that protrudes more than the lower part, it can make line contact or surface contact with the spherical lower chamber, and as the contact area increases, there is an advantage in that the pressing force can be properly transmitted.

In addition, the length of the lower ejection pin is extended so that the pressurizing force can be properly transmitted to the center of the spherical lower chamber, and there is also an advantage in that sufficient pressurizing force is transmitted to the lower chamber even if the lower assembly does not reach the maximum ejecting position due to the tolerance of the motor gear.

Additionally, when moving, there is an advantage in that it can solve the problem of ice breaking as the pressure is concentrated on the ice.

In addition, by extending the length of the upper and lower guides provided on the upper ejector, there is an advantage in that when the upper ejector moves up and down for ejection, the occurrence of left-right or forward-backward flow is prevented and the upper ejecting pin is smoothly introduced into the inlet opening of the upper tray.

In addition, by including an interference prevention groove corresponding to the upper and lower guides provided on the upper ejector, the upper and lower movement distance of the upper ejector can be prevented from being reduced.

FIG. 1 is a perspective view of a refrigerator according to one embodiment of the present invention.
Figure 2 is a drawing showing the refrigerator door of Figure 1 with the door open.
FIGS. 3A and 3B are perspective views of an ice maker according to one embodiment of the present invention.
Figure 4 is an exploded perspective view of an ice maker according to one embodiment of the present invention.
FIG. 5a is a top perspective view of an upper case according to one embodiment of the present invention.
FIG. 5b is a plan view of a portion of an upper case according to one embodiment of the present invention.
Figure 5c is a cross-sectional view taken along line 3-3 of Figure 5b.
Figure 6 is a bottom perspective view of an upper case according to one embodiment of the present invention.
Figure 7 is a top perspective view of an upper tray according to one embodiment of the present invention.
FIG. 8 is a bottom perspective view of an upper tray according to one embodiment of the present invention.
FIG. 9 is a side view of an upper tray according to one embodiment of the present invention.
FIG. 10 is a top perspective view of an upper supporter according to one embodiment of the present invention.
FIG. 11 is a bottom perspective view of an upper supporter according to one embodiment of the present invention.
Figure 12 is a cross-sectional view showing the upper assembly in an assembled state.
FIG. 13 is a perspective view of a lower assembly according to one embodiment of the present invention.
Figure 14 is a top perspective view of a lower case according to one embodiment of the present invention.
FIG. 15 is a bottom perspective view of a lower case according to one embodiment of the present invention.
Figure 16 is a top perspective view of a lower tray according to one embodiment of the present invention.
FIGS. 17 and 18 are bottom perspective views of a lower tray according to one embodiment of the present invention.
FIG. 19 is a side view of a lower tray according to one embodiment of the present invention.
FIG. 20 is a top perspective view of a lower supporter according to one embodiment of the present invention.
FIG. 21 is a bottom perspective view of a lower supporter according to one embodiment of the present invention.
Figure 22 is a cross-sectional view showing the lower assembly assembled.
FIG. 23 is a plan view of a lower supporter according to one embodiment of the present invention.
Fig. 24 is a cross-sectional view taken along line AA of Fig. 3a.
Figure 25 is a drawing showing a state in which ice formation is completed in the drawing of Figure 24.
Figure 26 is a perspective view of the ice maker from one side with the upper case removed.
Figure 27 is a perspective view of the ice maker from the other side with the upper case removed.
Fig. 28 is a side view showing the lower tray and upper ejector.
Fig. 29 is a side view showing the state of Fig. 28, with the lower tray rotating and the upper ejector lowered.
Fig. 30 is a perspective view showing the combined state of the upper ejector and the second link.
Figure 31 is a bottom perspective view of the upper ejector.
Figure 32 is a perspective view of the first link viewed from one side.
Figure 33 is a perspective view of the second link as viewed from the other side.
FIG. 34 is a bottom perspective view showing an ice maker and a lower ejector separated according to one embodiment of the present invention.
Figures 35 and 36 are perspective views of the lower ejector illustrated in Figure 34 viewed from various directions.
FIG. 37 is a bottom perspective view showing an ice maker and a lower ejector separated according to another embodiment of the present invention.
Figures 38 and 39 are perspective views of the lower ejector illustrated in Figure 37 viewed from various directions.
FIG. 40 is a bottom view of a lower ejector according to another embodiment of the present invention.
Fig. 41 is a cross-sectional view taken along line BB of Fig. 3a in a water supply state.
Fig. 42 is a cross-sectional view taken along line BB of Fig. 3a in a de-icing state.
Fig. 43 is a cross-sectional view taken along line BB of Fig. 3a in a state where ice making is complete.
Fig. 44 is a cross-sectional view taken along line BB of Fig. 3a in the initial state of ice breaking.
Fig. 45 is a cross-sectional view taken along BB of Fig. 3a in a state where moving is complete.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. When adding reference numerals to components in each drawing, it should be noted that the same components are given the same numerals as much as possible even if they are shown in different drawings. In addition, when describing embodiments of the present invention, if it is determined that a specific description of a related known configuration or function hinders understanding of the embodiments of the present invention, the detailed description thereof will be omitted.

Also, in describing components of embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only intended to distinguish the components from other components, and the nature, order, or sequence of the components are not limited by the terms. When it is described that a component is "connected," "coupled," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but another component may also be "connected," "coupled," or "connected" between each component.

FIG. 1 is a perspective view of a refrigerator according to an embodiment of the present invention, and FIG. 2 is a drawing showing the door of the refrigerator of FIG. 1 open.

Referring to FIGS. 1 and 2, a refrigerator (1) of one embodiment of the present invention may include a cabinet (2) forming a storage space and a door for opening and closing the storage space.

In detail, the cabinet (2) forms a storage space partitioned vertically by a barrier, and a refrigerator (3) can be formed at the top and a freezer (4) can be formed at the bottom.

Storage elements such as drawers, shelves, and baskets may be provided inside the refrigerator (3) and freezer (4).

The above door may include a refrigerator door (5) that shields the refrigerator (3) and a freezer door (6) that shields the freezer (4).

The above refrigerator door (5) is composed of a pair of doors on the left and right sides and can be opened and closed by rotation. In addition, the above freezer door (6) can be configured to be pulled out in a drawer-like manner.

Of course, the arrangement of the refrigerator (3) and freezer (4) and the shape of the door may vary depending on the type of refrigerator, and the present invention is not limited thereto and may be applied to various types of refrigerators. For example, the freezer (4) and the refrigerator (3) may be arranged left and right, but the freezer (4) may also be positioned above the refrigerator (3).

The above freezer (4) may be equipped with an ice maker (100). The ice maker (100) can produce spherical ice by making ice out of supplied water.

In addition, an ice bin (102) may be further provided below the ice maker (100) in which the ice produced is stored after being removed from the ice maker (100).

The above ice maker (100) and ice bin (102) may be installed inside the freezer (4) in a separate housing (101).

The user can open the freezer door (6) to access the ice bin (102) and obtain ice.

As another example, the refrigerator door (5) may be equipped with a dispenser (7) for dispensing purified water or frozen ice from the outside.

And, ice generated from the ice maker (100) or ice generated from the ice maker (100) and stored in the ice bin (102) is transferred to the dispenser (7) by a transfer means, so that a user can obtain ice from the dispenser (7).

Below, the ice maker will be described in detail with reference to the drawings.

FIGS. 3A and 3B are perspective views of an ice maker according to an embodiment of the present invention, and FIG. 4 is an exploded perspective view of an ice maker according to an embodiment of the present invention.

Referring to FIGS. 3a to 4, the ice maker (100) may include an upper assembly (110) and a lower assembly (200).

The lower assembly (200) can be rotated relative to the upper assembly (110). For example, the lower assembly (200) can be rotatably connected to the upper assembly (110).

When the lower assembly (200) is in contact with the upper assembly (110), spherical ice can be created together with the upper assembly (110).

That is, the upper assembly (110) and the lower assembly (200) form an ice chamber (111) for producing spherical ice. The ice chamber (111) is a substantially spherical chamber.

The upper assembly (110) and the lower assembly (200) can form a plurality of partitioned ice chambers (111).

Hereinafter, an example will be described in which three ice chambers (111) are formed by the upper assembly (110) and the lower assembly (200), and it will be noted that there is no limitation on the number of ice chambers (111).

When the upper assembly (110) and the lower assembly (200) form the ice chamber (111), water can be supplied to the ice chamber (111) through the water supply unit (190).

The above water supply unit (190) is coupled to the upper assembly (110) and guides water supplied from the outside to the ice chamber (111).

After the ice is formed, the lower assembly (200) can be rotated in the forward direction. Then, the spherical ice formed between the upper assembly (110) and the lower assembly (200) can be separated from the upper assembly (110) and the lower assembly (200).

The ice maker (100) may further include a driving unit (180) so that the lower assembly (200) can rotate relative to the upper assembly (110).

The above driving unit (180) may include a driving motor and a power transmission unit for transmitting power of the driving motor to the lower assembly (200). The power transmission unit may include one or more gears.

The above driving motor may be a bidirectional rotational motor. Accordingly, bidirectional rotation of the lower assembly (200) is possible.

To enable ice to be separated from the upper assembly (110), the ice maker (100) may further include an upper ejector (300).

The upper ejector (300) is connected in conjunction with the lower assembly (200), so that when the lower assembly (200) rotates, the upper ejector (300) can rise and fall.

For example, after ice making is completed, if the lower assembly (200) rotates downward away from the upper assembly (110) for ice ejection, the upper ejector (300) can descend.

Additionally, after the ejection is completed, if the lower assembly (200) rotates upward to be coupled with the upper assembly (110) for water supply, the upper ejector (300) can rise.

When the upper ejector (300) is lowered during the ice removal, ice adhered to the upper assembly (110) can be separated from the upper assembly (110).

The upper ejector (300) may include an upper ejector body (310) and a plurality of upper ejecting pins (320) extending in an intersecting direction from the upper ejector body (310).

The upper ejecting pins (320) may be provided in the same number as the ice chamber (111).

The upper ejecting pin (320) can pressurize ice in the ice chamber (111) during the process of penetrating the upper assembly (110) and being drawn into the ice chamber (111).

Ice pressed by the upper ejecting pin (320) can be separated from the upper assembly (110).

Additionally, the ice maker (100) may further include a lower ejector (400) so that ice adhered to the lower assembly (200) can be separated.

The lower ejector (400) can pressurize the lower assembly (200) to separate ice adhered to the lower assembly (200) from the lower assembly (200). The lower ejector (400) can be fixed to the upper assembly (110), for example.

The lower ejector (400) may include a lower ejector body (410) and a plurality of lower ejecting pins (420) protruding from the lower ejector body (410). The lower ejecting pins (420) may be provided in the same number as the ice chamber (111).

In addition, the lower ejection pin (420) may include a pin body (420a) protruding from the lower ejector body (410) and a pressurizing portion (420b) formed by extending from the pin body (420a).

For example, the fin body (420a) and the pressurizing portion (420b) may be bent to form a certain angle, and the pressurizing portion (420b) may extend from the fin body (420a) to pressurize the center of the ice chamber (111).

During the rotation process of the lower assembly (200) for ejection, the rotational force of the lower assembly (200) can be transmitted to the upper ejector (300).

To this end, the ice maker (100) may further include a connecting unit (350) that connects the lower assembly (200) and the upper ejector (300). The connecting unit (350) may include one or more links.

For example, when the lower assembly (200) rotates in one direction, the upper ejector (300) can be lowered by the connecting unit (350) so that the upper ejecting pin (320) can pressurize the ice.

On the other hand, when the lower assembly (200) is rotated in the other direction, the upper ejector (300) can be raised by the connecting unit (350) and returned to its original position.

Below, the upper assembly (110) and the lower assembly (200) will be described in more detail.

The upper assembly (110) may include an upper tray (150) forming a portion of an ice chamber (111) for ice formation. For example, the upper tray (150) defines an upper portion of the ice chamber (111).

The upper assembly (110) may further include an upper case (120) and an upper supporter (170) for fixing the position of the upper tray (150).

The upper tray (150) may be positioned on the lower side of the upper case (120). A part of the upper supporter (170) may be positioned on the lower side of the upper tray (150).

The upper case (120), upper tray (150), and upper supporter (170) aligned in the vertical direction in this way can be fastened by a fastening member.

That is, the upper tray (150) can be fixed to the upper case (120) through fastening of the fastening member.

Additionally, the upper supporter (170) can support the lower side of the upper tray (150) to limit downward movement.

The above water supply unit (190) may be fixed to the upper case (120), for example.

The above ice maker (100) may further include a temperature sensor (500) for detecting the temperature of the upper tray (150).

The temperature sensor (500) may be mounted, for example, on the upper case (120). Then, when the upper tray (150) is fixed to the upper case (120), the temperature sensor (500) may come into contact with the upper tray (150).

Meanwhile, the lower assembly (200) may include a lower tray (250) forming another part of the ice chamber (111) for ice formation. For example, the lower tray (250) defines a lower part of the ice chamber (111).

The lower assembly (200) may further include a lower supporter (270) that supports the lower side of the lower tray (250) and a lower case (210) that at least partially covers the upper side of the lower tray (250).

The lower case (210), lower tray (250) and lower supporter (270) can be fastened by a fastening member.

Meanwhile, the ice maker (100) may further include a switch (600) for turning the ice maker (100) on/off. When a user operates the switch (600) to the on state, ice can be produced through the ice maker (100).

That is, when the switch (600) is turned on, water is supplied to the ice maker (100), and an ice-making process in which ice is created by cold air and an ice-breaking process in which the lower assembly (200) rotates to separate ice can be repeatedly performed.

On the other hand, if the switch (600) is turned off, ice production through the ice maker (100) becomes impossible. The switch (600) may be provided, for example, in the upper case (120).

<Upper case>

FIG. 5a is a top perspective view of an upper case according to an embodiment of the present invention, FIG. 5b is a partial plan view of an upper case according to an embodiment of the present invention, FIG. 5c is a cross-sectional view taken along line 3-3 of FIG. 5b, and FIG. 6 is a bottom perspective view of an upper case according to an embodiment of the present invention.

Referring to FIGS. 5 and 6, the upper case (120) can be fixed to the housing (101) within the freezer (4) while the upper tray (150) is fixed.

The upper case (120) may include an upper plate (121) for fixing the upper tray (150).

The upper tray (150) can be fixed to the upper plate (121) with a part of the upper tray (150) in contact with the lower surface of the upper plate (121).

The upper plate (121) may be provided with an opening (123) through which a portion of the upper tray (150) passes.

For example, when the upper tray (150) is fixed to the upper plate (121) while the upper tray (150) is positioned on the lower side of the upper plate (121), a part of the upper tray (150) can protrude upward from the upper plate (121) through the opening (123).

Alternatively, it is also possible for the upper tray (150) not to protrude upward from the upper plate (121) through the opening (123), but to be exposed upward from the upper plate (121) through the opening (123).

The upper plate (121) may include a through opening (139a, 139b of FIG. 5a) into which a plurality of unit guides (181, 182) of the upper supporter (170) to be described later are introduced.

Additionally, the upper plate (121) may include an interference prevention groove (126a, 126b).

The opening (123) can be located between a pair of interference prevention grooves (126a, 126b).

The above interference device home (126a, 126b) may be configured such that a part of the upper and lower guide (313) of the upper ejector (300), described later, is introduced to prevent interference with the upper plate (121) when the upper ejector (300) moves up and down along the unit guide (181, 182).

In detail, the above interference prevention grooves (126a, 126b) may have a width corresponding to a width of a portion of the upper and lower guides (313) being introduced, and may be formed symmetrically with respect to the through openings (139a, 139b) located on both sides of the upper plate (121), respectively, with respect to the openings (123).

In addition, the interference prevention groove (126a, 126b) can prevent the upper ejector (300) from reducing its vertical movement distance by allowing the lower portion of the upper and lower guide (313) to be received during the process of lowering the upper ejector (300).

The upper plate (121) may include a recessed portion (122) formed by sinking downward. An opening (123) may be formed at the bottom (122a) of the recessed portion (122).

Accordingly, the upper tray (150) penetrating the opening (123) can be positioned in the space where the recessed portion (122) is formed.

The upper case (120) may be provided with a heater coupling part (124) to which an upper heater (148) for heating the upper tray (150) for freezing is coupled.

The above heater coupling part (124) may be provided, for example, on the upper plate (121). The heater coupling part (124) may be located on the lower side of the recessed part (122).

The upper case (120) may further include a switch case (125) in which the switch (600) is installed.

The above switch case (125) may be connected to a side peripheral portion (143) to be described later and provided at the bottom of the upper plate (121), and may include one or more holes for installing a switch (600).

The upper case (120) may further include a pair of installation ribs (128, 129) for installing the temperature sensor (500).

The above pair of installation ribs (128, 129) are arranged spaced apart in the direction of arrow B in Fig. 6. The above pair of installation ribs (128, 129) are arranged to face each other, and the temperature sensor (500) can be positioned between the above pair of installation ribs (128, 129).

The above pair of installation ribs (128, 129) can be provided on the upper plate (121).

The upper plate (121) may be provided with a plurality of slots (131, 132) for connection with the upper tray (150).

A portion of the upper tray (150) can be inserted into the plurality of slots (131, 132).

The above plurality of slots (131, 132) may include a first upper slot (131) and a second upper slot (132) positioned opposite the first upper slot (131) with respect to the opening (123).

The opening (123) can be positioned between the first upper slot (131) and the second upper slot (132).

The first upper slot (131) and the second upper slot (132) can be spaced apart in the direction of arrow B in FIG. 6.

Although not limited, the plurality of first upper slots (131) may be arranged spaced apart in the direction of arrow A (referred to as the first direction) intersecting the direction of arrow B (referred to as the second direction).

Additionally, the plurality of second upper slots (132) may be arranged spaced apart in the direction of arrow A.

In this specification, the direction of the arrow A is the same direction as the arrangement direction of the plurality of ice chambers (111).

The above first upper slot (131) can be formed in a curved shape, for example. Accordingly, the length of the first upper slot (131) can be increased.

The second upper slot (132) may be formed in a curved shape, for example. Accordingly, the length of the second upper slot (133) can be increased.

As the length of each of the upper slots (131, 132) increases, the length of the protrusion (formed on the upper tray) inserted into each of the upper slots (131, 132) can be increased, thereby increasing the bonding force between the upper tray (150) and the upper case (120).

The distance from the first upper slot (131) to the opening (123) and the distance from the second upper slot (132) to the opening (123) may be different. For example, the distance from the second upper slot (132) to the opening (123) may be formed shorter than the distance from the first upper slot (131) to the opening (123).

And, when looking at each upper slot (131) from the opening (123), each slot (131) can be rounded in a convex shape toward the outside of the opening (123).

The upper plate (121) may further include a sleeve (133) into which a fastening boss of the upper supporter (170) to be described later is inserted.

The above sleeve (133) may be formed in a cylindrical shape and may extend upward from the upper plate (121).

For example, a plurality of sleeves (133) may be provided on the upper plate (121). The plurality of sleeves (133) may be arranged spaced apart from each other in the direction of arrow A. In addition, the plurality of sleeves (133) may be arranged in multiple rows in the direction of arrow B.

Some of the plurality of sleeves (133) may be positioned between two adjacent first upper slots (131).

Another sleeve among the plurality of sleeves (133) may be positioned between two adjacent second upper slots (132) or may be positioned to face an area between two second upper slots (132).

The upper case (120) may further include a plurality of hinge supporters (135, 136) to enable rotation of the lower assembly (200).

The above plurality of hinge supporters (135, 136) may be spaced apart in the direction of arrow A with reference to Fig. 6. In addition, a first hinge hole (137) may be formed in each of the hinge supporters (135, 136).

The above plurality of hinge supports (135, 136) may, for example, extend downward from the upper plate (121).

The upper case (120) may further include a vertical extension (140) that extends vertically along the perimeter of the upper plate (121). The vertical extension (140) may extend upward from the upper plate (121).

The above vertical extension (140) may include one or more coupling hooks (140a). The upper case (120) may be hook-coupled to the housing (101) by the coupling hooks (140a).

And, the water supply unit (190) can be coupled to the vertical extension unit (140).

The upper case (120) may further include upper ribs (141a, 141b, 141c) to prevent problems in which strength and durability may be weakened by forming interference prevention grooves (126a, 126b) adjacent to the through openings (139a, 139b).

The upper ribs (141a, 141b, 141c) may extend from the upper plate (121) and may be formed in multiple numbers above or below the upper plate (121) as long as there is no interference during assembly of the upper assembly (110).

The upper ribs (141a, 141b, 141c) may include first to third upper ribs (141a, 141b, 141c).

The first upper rib (141a) and the second upper rib (141b) can be formed at positions symmetrical with respect to the opening (123) adjacent to the interference prevention groove (126a, 126b).

Additionally, the first and second upper ribs (141a, 141b) may be formed in a shape that extends upward from the upper plate (121) in a single-folded shape.

In detail, the first and second upper ribs (141a, 141b) may be formed vertically along the perimeter of the through opening (139a, 139b) formed in the upper plate (121) at a position adjacent to the interference prevention groove (126a, 126b).

Additionally, in order to prevent interference due to assembly of the upper supporter (170) and the connecting unit (350), the first and second upper ribs (141a, 141b) may be formed on only one side of the interference prevention groove (126a, 126b).

Additionally, one of the first and second upper ribs (141a, 141b) may have a shape in which the height increases toward the outside of the upper plate (121).

The third upper rib (141c) may also be formed in a shape extending downward from the upper plate (121).

In detail, in order to support the switch case (125) formed by protruding, the third upper rib (141c) may be formed in a form that connects the switch case (125) and the recessed portion (122). The problem of weakening durability or strength that may occur in a structure that protrudes due to the third upper rib (141c) can be solved.

The upper case (120) may further include a horizontal extension (142) that extends horizontally to the outside of the vertical extension (140).

The horizontal extension (142) may be provided with a screw fastening portion (142a) that protrudes outward to fasten the upper case (120) to the housing (101).

The upper case (120) may further include a side peripheral portion (143). The side peripheral portion (143) may extend downward from the horizontal extension portion (142).

The above side peripheral portion (143) can be arranged to surround the perimeter of the lower assembly (200). That is, the above side peripheral portion (143) serves to prevent the lower assembly (200) from being exposed to the outside.

Above, it has been described that the upper case (120) is attached to a separate housing (101) within the freezer (4), but alternatively, it is also possible for the upper case (120) to be attached directly to the wall forming the freezer (4).

<Upper tray>

FIG. 7 is a top perspective view of an upper tray according to an embodiment of the present invention, FIG. 8 is a bottom perspective view of an upper tray according to an embodiment of the present invention, and FIG. 9 is a side view of an upper tray according to an embodiment of the present invention.

Referring to FIGS. 7 to 9, the upper tray (150) may be formed of a flexible material that can return to its original shape after being deformed by an external force.

For example, the upper tray (150) may be formed of a silicone material. If the upper tray (150) is formed of a silicone material as in the present embodiment, even if the shape of the upper tray (150) is deformed by an external force during the ice-making process, the upper tray (150) returns to its original shape, so that spherical ice can be created even when ice is repeatedly created.

If the upper tray (150) is formed of a metal material, and an external force is applied to the upper tray (150) and the upper tray (150) itself is deformed, the upper tray (150) can no longer be restored to its original shape.

In this case, after the shape of the upper tray (150) is deformed, spherical ice cannot be created. That is, repetitive creation of spherical ice becomes impossible.

On the other hand, if the upper tray (150) has a flexible material that can return to its original shape, as in the present embodiment, this problem can be solved.

In addition, when the upper tray (150) is formed of a silicone material, the upper tray (150) can be prevented from melting or thermally deforming due to heat provided from the upper heater (148).

The upper tray (150) may include an upper tray body (151) forming an upper chamber (152) that is part of the ice chamber (111).

The above upper tray body (151) can define a plurality of upper chambers (152).

For example, the plurality of upper chambers (152) may define a first upper chamber (152a), a second upper chamber (152b), and a third upper chamber (152c).

The upper tray body (151) may include three chamber walls (153) forming three independent upper chambers (152a, 152b, 152c), and the three chamber walls (153) may be formed as one body and connected to each other.

The first upper chamber (152a), the second upper chamber (152b), and the third upper chamber (152c) may be arranged in a row. For example, the first upper chamber (152a), the second upper chamber (152b), and the third upper chamber (152c) may be arranged in the direction of arrow A with reference to FIG. 8. The direction of arrow A in FIG. 8 is the same direction as the direction of arrow A in FIG. 6.

The upper chamber (152) may be formed in a hemispherical shape. That is, the upper part of the spherical ice may be formed by the upper chamber (152).

An inlet opening (154) may be formed on the upper side of the upper tray body (151) for allowing water to flow into the upper chamber (152). For example, three inlet openings (154) may be formed in the upper tray body (151). Cold air may be guided to the ice chamber (111) through the inlet openings (154).

During the ejection process, the upper ejector (300) can be introduced into the upper chamber (152) through the inlet opening (154).

In order to minimize deformation of the upper tray (150) on the side of the inlet opening (154) during the process in which the upper ejector (300) is introduced through the inlet opening (154), the upper tray (150) may be provided with an inlet wall (155).

The above inlet wall (155) is arranged along the perimeter of the inlet opening (154) and can extend upward from the upper tray body (151).

The above inlet wall (155) may be formed in a cylindrical shape. Accordingly, the upper ejector (300) may pass through the inner space of the inlet wall (155) and penetrate the inlet opening (154).

In order to prevent deformation of the inlet wall (155) during the process of the upper ejector (300) being introduced into the inlet opening (154), one or more first connecting ribs (155a) may be provided along the periphery of the inlet wall (155).

The first connecting rib (155a) can connect the inlet wall (155) and the upper tray body (151). For example, the first connecting rib (155a) can be formed integrally with the perimeter of the inlet wall (155) and the outer surface of the upper tray body (151).

Although not limited, a plurality of first connecting ribs (155a) may be arranged along the perimeter of the inlet wall (155).

The two inlet walls (155) corresponding to the second upper chamber (152b) and the third upper chamber (152c) can be connected by the second connecting rib (162). The second connecting rib (162) also serves to prevent deformation of the inlet wall (155).

A water supply guide (156) may be provided on the inlet wall (155) corresponding to any one of the three upper chambers (152a, 152b, 152c).

Although not limited, the water supply guide (156) may be formed on the inlet wall (155) corresponding to the second upper chamber (152b).

The above water supply guide (156) may be inclined upward from the inlet wall (155) in a direction away from the second upper chamber (152b).

The upper tray (150) may further include a first receiving portion (160). The first receiving portion (160) may receive a recessed portion (122) of the upper case (120).

Since a heater coupling part (124) is provided in the above-mentioned recessed part (122), and an upper heater (see 148 of FIG. 12) is provided in the heater coupling part (124), it can be understood that the upper heater (see 148 of FIG. 12) is accommodated in the first accommodation part (160).

The first receiving portion (160) may be arranged in a form that surrounds the upper chambers (152a, 152b, 152c). The first receiving portion (160) may be formed as the upper surface of the upper tray body (151) is sunken downward.

A heater coupling part (124) to which the upper heater (see 148 of FIG. 12) is coupled can be accommodated in the first receiving part (160).

The upper tray (150) may further include a second receiving portion (161) (or may be referred to as a sensor receiving portion) in which the temperature sensor (500) is received.

For example, the second receiving portion (161) may be provided in the upper tray body (151). Although not limited, the second receiving portion (161) may be formed by being sunken downward from the bottom of the first receiving portion (160).

And, the second receiving portion (161) may be positioned between two adjacent upper chambers. As an example, FIG. 7 illustrates that it is positioned between the first upper chamber (152a) and the second upper chamber (152b).

Accordingly, interference between the upper heater (see 148 of FIG. 12) accommodated in the first receiving portion (160) and the temperature sensor (500) can be prevented.

When the temperature sensor (500) is accommodated in the second receiving portion (161), the temperature sensor (500) can come into contact with the outer surface of the upper tray body (151).

The chamber wall (153) of the upper tray body (151) may include a vertical wall (153a) and a curved wall (153b).

The above curved wall (153b) may be rounded in a direction away from the upper chamber (152) as it goes upward.

The upper tray (150) may further include a horizontal extension (164) extending horizontally around the perimeter of the upper tray body (151). The horizontal extension (164) may, for example, extend along the perimeter of the upper edge of the upper tray body (151).

The above horizontal extension (164) can be in contact with the upper case (120) and the upper supporter (170).

For example, the lower surface (164b) (or may be referred to as the “first surface”) of the horizontal extension (164) may be in contact with the upper supporter (170), and the upper surface (164a) (or may be referred to as the “second surface”) of the horizontal extension (164) may be in contact with the upper case (120).

At least a portion of the horizontal extension (164) may be positioned between the upper case (120) and the upper supporter (170).

The above horizontal extension (164) may include a plurality of upper protrusions (165, 166) for insertion into each of the plurality of upper slots (131, 132).

The above plurality of upper protrusions (165, 166) may include a first upper protrusion (165) and a second upper protrusion (166) positioned opposite the first upper protrusion (165) with respect to the inlet opening (154).

The first upper protrusion (165) can be inserted into the first upper slot (131), and the second upper protrusion (166) can be inserted into the second upper slot (132).

The first upper protrusion (165) and the second upper protrusion (166) can protrude upward from the upper surface (164a) of the horizontal extension (164).

The above first upper protrusion (165) and the above second upper protrusion (166) can be spaced apart in the direction of arrow B in Fig. 8. The direction of arrow B in Fig. 8 is the same direction as the direction of arrow B in Fig. 6.

Although not limited, the plurality of first upper protrusions (165) may be arranged spaced apart in the direction of arrow A.

Additionally, the plurality of second upper protrusions (166) may be arranged spaced apart in the direction of arrow A.

The above first upper protrusion (165) may be formed in a curved shape, for example. In addition, the above second upper protrusion (166) may be formed in a curved shape, for example.

In this embodiment, each of the upper protrusions (165, 166) not only allows the upper tray (150) and the upper case (120) to be combined, but also prevents the horizontal extension (264) from being deformed during the ice-making or ice-separating process.

At this time, when the upper protrusion (165, 165) is formed in a curved shape, the gap between the upper chamber (152) and the upper protrusion (165, 165) in the longitudinal direction becomes the same or almost the same, so that deformation of the horizontal extension (264) can be effectively prevented.

For example, the horizontal direction deformation of the horizontal extension (264) can be minimized to prevent the horizontal extension (264) from being stretched and deformed plastically. If the horizontal extension (264) is deformed plastically, the upper tray body cannot be positioned in the correct position during ice making, so that the ice does not have a spherical shape.

The above horizontal extension (164) may further include a plurality of lower protrusions (167, 168). The plurality of lower protrusions (167, 168) may be inserted into the lower slot of the upper supporter (170) to be described later.

The above plurality of lower protrusions (167, 168) may include a first lower protrusion (167) and a second lower protrusion (168) positioned opposite the second lower protrusion (167) with respect to the upper chamber (152).

The above first lower protrusion (167) and the second lower protrusion (168) can protrude upward from the lower surface (164b) of the horizontal extension (164).

The first lower protrusion (167) may be positioned on the opposite side of the first upper protrusion (165) with respect to the horizontal extension (164). The second lower protrusion (168) may be positioned on the opposite side of the second upper protrusion (166) with respect to the horizontal extension (164).

The first lower protrusion (167) may be arranged spaced apart from the vertical wall (153a) of the upper tray body (151). The second lower protrusion (168) may be arranged spaced apart from the curved wall (153b) of the upper tray body (151).

The above-described plurality of lower protrusions (167, 168) can also be formed in a curved shape. As the protrusions (165, 166, 167, 168) are formed on each of the upper surface (164a) and the lower surface (164b) of the horizontal extension portion (164), horizontal deformation of the horizontal extension portion (164) can be effectively prevented.

The above horizontal extension (164) may be provided with a through hole (169) for the fastening boss of the upper supporter (170) to pass through, which will be described later.

For example, a plurality of through holes (169) may be provided in the horizontal extension (164).

Some of the plurality of through holes (169) may be located between two adjacent first upper protrusions (165) or between two adjacent first lower protrusions (167).

Another of the plurality of through holes (169) may be positioned between two adjacent second lower protrusions (168) or may be positioned to face an area between two second lower protrusions (168).

<Upper supporter>

FIG. 10 is a top perspective view of an upper supporter according to an embodiment of the present invention, and FIG. 11 is a bottom perspective view of an upper supporter according to an embodiment of the present invention.

Referring to FIGS. 10 and 11, the upper supporter (170) may include a supporter plate (171) in contact with the upper tray (150).

For example, the upper surface of the support plate (171) may be in contact with the lower surface (164b) of the horizontal extension (164) of the upper tray (150).

The above support plate (171) may be provided with a plate opening (172) for the upper tray body (151) to penetrate through.

The edge of the support plate (171) may be provided with a peripheral wall (174) formed by being bent upward. The peripheral wall (174) may, for example, be in contact with at least a portion of the side perimeter of the horizontal extension (164).

And, the upper surface of the peripheral wall (174) can contact the lower surface of the upper plate (121).

The above support plate (171) may include a plurality of lower slots (176, 177).

The above plurality of lower slots (176, 177) may include a first lower slot (176) into which the first lower protrusion (167) is inserted and a second lower slot (177) into which the second lower protrusion (168) is inserted.

A plurality of first lower slots (176) may be arranged spaced apart from each other in the direction of arrow A on the support plate (171). In addition, a plurality of second lower slots (177) may be arranged spaced apart from each other in the direction of arrow A on the support plate (171).

The above supporter plate (171) may further include a plurality of fastening bosses (175). The plurality of fastening bosses (175) may protrude upward from the upper surface of the supporter plate (171).

Each of the above fastening bosses (175) can be introduced into the sleeve (133) of the upper case (120) by passing through the through hole (169) of the horizontal extension (164).

When the above fastening boss (175) is inserted into the sleeve (133), the upper surface of the above fastening boss (175) may be positioned at the same height as or lower than the upper surface of the sleeve (133).

The fastening member fastened to the above fastening boss (175) may be, for example, a bolt (B1 in FIG. 3). The bolt (B1) may include a body portion and a head portion formed to have a diameter larger than that of the body portion. The bolt (B1) may be fastened to the fastening boss (175) from above the fastening boss (175).

When the body of the bolt (B1) is fastened to the fastening boss (175), and the head comes into contact with the upper surface of the sleeve (133), or the head comes into contact with the upper surface of the sleeve (133) and the upper surface of the fastening boss (175), the assembly of the upper assembly (110) can be completed.

The upper supporter (170) may further include a plurality of unit guides (181, 182) for guiding a connection unit (350) connected to the upper ejector (300).

The above-mentioned plurality of unit guides (181, 182) can be arranged spaced apart in the direction of arrow A based on FIG. 11, for example.

The above unit guides (181, 182) can extend upward from the upper surface of the support plate (171). In addition, each unit guide (181, 182) can be connected to the peripheral wall (174).

Each of the above unit guides (181, 182) may include a guide slot (183) extending in the vertical direction.

The connecting unit (350) is connected to the upper ejector body (310) while both ends of the upper ejector body (310) of the upper ejector (300) penetrate the guide slot (183).

Therefore, when the rotational force is transmitted to the upper ejector body (310) by the connecting unit (350) during the rotation process of the lower assembly (200), the upper ejector body (310) can move up and down along the guide slot (183).

Figure 12 is a cross-sectional view showing the upper assembly in an assembled state.

Referring to FIG. 12, the upper case (120), the upper tray (150), and the upper supporter (170) can be connected to each other while the upper heater (148) is connected to the heater connecting portion (124) of the upper case (120).

And, the first upper protrusion (165) of the upper tray (150) is inserted into the first upper slot (131) of the upper case (120). In addition, the second upper protrusion (166) of the upper tray (150) is inserted into the second upper slot (132) of the upper case (120).

Next, the first lower protrusion (167) of the upper tray (150) is inserted into the first lower slot (176) of the upper supporter (170), and the second lower protrusion (168) of the upper tray is inserted into the second lower slot (177) of the upper supporter (170).

Then, the fastening boss (175) of the upper supporter (170) passes through the through hole (169) of the upper tray (150) and is accommodated in the sleeve (133) of the upper case (120). In this state, the bolt (B1) can be fastened to the fastening boss (175) from above the fastening boss (175).

When the above bolt (B1) is fastened to the fastening boss (175), the head of the bolt (B1) is positioned higher than the upper plate (121).

On the other hand, since the hinge supporter (135, 136) is positioned lower than the upper plate (121), interference between the upper assembly (110) or the connecting unit (350) and the head of the bolt (B1) can be prevented during the process of rotating the lower assembly (200).

During the process of assembling the upper assembly (110), the plurality of unit guides (181, 182) of the upper supporter (170) protrude upward from the upper plate (121) through the through openings (139a, 139b of FIG. 5a) located on both sides of the upper plate (121) in the upper case (120).

In this way, the upper ejector (300) penetrates the guide slot (183) of the unit guide (181, 182) protruding upward from the upper plate (121).

Accordingly, the upper ejector (300) is lowered while positioned on the upper side of the upper plate (121) and is drawn into the upper chamber (152) so that the ice in the upper chamber (152) is separated from the upper tray (150).

When the upper assembly (110) is assembled, the heater coupling portion (124) to which the upper heater (148) is coupled is accommodated in the first receiving portion (160) of the upper tray (150).

With the heater coupling part (124) accommodated in the first receiving part (160), the upper heater (148) comes into contact with the bottom surface (160a) of the first receiving part (160).

When the upper heater (148) is accommodated in a sunken heater joint (124) as in the present embodiment and comes into contact with the upper tray body (151), the heat of the upper heater (148) can be minimized from being transferred to other parts than the upper tray body (151).

At least a portion of the upper heater (148) may be arranged to overlap the upper chamber (152) in a vertical direction so that the heat of the upper heater (148) is smoothly transferred to the upper chamber (152).

<Subcase>

FIG. 13 is a perspective view of a lower assembly according to an embodiment of the present invention, FIG. 14 is an upper perspective view of a lower case according to an embodiment of the present invention, and FIG. 15 is a lower perspective view of a lower case according to an embodiment of the present invention.

Referring to FIGS. 13 to 15, the lower assembly (200) may include a lower tray (250), a lower supporter (270), and a lower case (210).

The lower case (210) can surround the perimeter of the lower tray (250), and the lower supporter (270) can support the lower tray (250).

And, the connecting unit (350) can be coupled to the lower supporter (270).

The above connecting unit (350) may include a first link (352) for receiving power from the driving unit (180) to rotate the lower supporter (270), and a second link (356) connected to the lower supporter (270) to transmit the rotational force of the lower supporter (270) to the upper ejector (300) when the lower supporter (270) rotates.

The above first link (352) and the lower supporter (270) may be connected by an elastic member (360). The elastic member (360) may be, for example, a coil spring.

One end of the elastic member (360) is connected to the first link (352), and the other end is connected to the lower supporter (270).

The above elastic member (360) provides elasticity to the lower supporter (270) so that it remains in contact with the upper tray (150) and the lower tray (250).

In this embodiment, a first link (352) and a second link (356) may be positioned on each side of the lower supporter (270).

And, one of the two first links (352) is connected to the driving unit (180) and receives rotational power from the driving unit (180).

The above two first links (352) can be connected by a connecting shaft (370 in FIG. 4).

A hole (358) through which the upper ejector body (310) of the upper ejector (300) can pass may be formed at the upper end of the second link (356).

The lower case (210) may include a lower plate (211) for fixing the lower tray (250).

A portion of the lower tray (250) can be fixed in contact with the lower surface of the lower plate (211).

The lower plate (211) may be provided with an opening (212) through which a portion of the lower tray (250) passes.

For example, when the lower tray (250) is fixed to the lower plate (211) while the lower tray (250) is positioned on the lower side of the lower plate (211), a part of the lower tray (250) can protrude upward from the lower plate (211) through the opening (212).

The lower case (210) may further include a peripheral wall (214) (or cover wall) surrounding the lower tray (250) penetrating the lower plate (211).

The above perimeter wall (214) may include a vertical wall (214a) and a curved wall (215).

The above vertical wall (214a) is a wall that extends vertically upward from the lower plate (211). The above curved wall (215) is a wall that rounds upward from the lower plate (211) and moves away from the opening (212).

The above vertical wall (214a) may include a first coupling slit (214b) for coupling with the lower tray (250). The first coupling slit (214b) may be formed as the upper end of the vertical wall (214a) is sunken downward.

The above curved wall (215) may include a second joining slit (215a) for joining with the lower tray (250).

The above second coupling slit (215a) can be formed as the upper end of the curved wall (215) is sunken downward.

The above lower case (210) may further include a first fastening boss (216) and a second fastening boss (217).

The above first fastening boss (216) may protrude downwardly from the lower surface of the lower plate (211). For example, a plurality of first fastening bosses (216) may protrude downwardly from the lower plate (211).

The above plurality of first fastening bosses (216) can be arranged spaced apart in the direction of arrow A based on FIG. 14.

The second fastening boss (217) may protrude downward from the lower surface of the lower plate (211). For example, a plurality of second fastening bosses (217) may protrude from the lower plate (211). The plurality of first fastening bosses (217) may be arranged spaced apart from each other in the direction of arrow A based on FIG. 14.

The above first fastening boss (216) and second fastening boss (217) can be arranged spaced apart from each other in the direction of arrow B.

In this embodiment, the length of the first fastening boss (216) and the length of the second fastening boss (217) may be formed differently. For example, the length of the second fastening boss (217) may be formed longer than the length of the first fastening boss (216).

The first fastening member can be fastened to the first fastening boss (216) from the upper side of the first fastening boss (216). On the other hand, the second fastening member can be fastened to the second fastening boss (217) from the lower side of the second fastening boss (217).

In order to prevent the first fastening member from interfering with the curved wall (215) during the process of fastening the first fastening member to the first fastening boss (216), a groove (215b) is provided in the curved wall (215) for movement of the fastening member.

The lower case (210) may further include a slot (218) for coupling with the lower tray (250).

A portion of the lower tray (250) may be inserted into the slot (218). The slot (218) may be positioned adjacent to the vertical wall (214a).

For example, a plurality of slots (218) may be spaced apart in the direction of arrow A in Fig. 14. Each of the slots (218) may be formed in a curved shape.

The lower case (210) may further include a receiving groove (218a) into which a portion of the lower tray (250) is inserted. The receiving groove (218a) may be formed as a portion of the lower plate (211) is sunk toward the curved wall (215).

The lower case (210) may further include an extension wall (219) that contacts a portion of the side periphery of the lower plate (212) while being coupled with the lower tray (250). The extension wall (219) may extend in a straight shape in the direction of arrow A.

<Lower Tray>

FIG. 16 is a top perspective view of a lower tray according to an embodiment of the present invention, FIGS. 17 and 18 are bottom perspective views of a lower tray according to an embodiment of the present invention, and FIG. 19 is a side view of a lower tray according to an embodiment of the present invention.

Referring to FIGS. 16 to 19, the lower tray (250) may be formed of a flexible material that can return to its original shape after being deformed by an external force.

For example, the lower tray (250) may be formed of a silicone material. If the lower tray (250) is formed of a silicone material as in the present embodiment, even if an external force is applied to the lower tray (250) during the ice-making process and the shape of the lower tray (250) is deformed, the lower tray (250) can return to its original shape. Therefore, even with repeated ice-making, spherical ice-making is possible.

If the lower tray (250) is formed of a metal material, and an external force is applied to the lower tray (250) and the lower tray (250) itself is deformed, the lower tray (250) can no longer be restored to its original shape.

In this case, after the shape of the lower tray (250) is deformed, spherical ice cannot be created. That is, repetitive creation of spherical ice becomes impossible.

On the other hand, if the lower tray (250) has a flexible material that can return to its original shape, as in the present embodiment, this problem can be solved.

In addition, if the lower tray (250) is formed of a silicone material, the lower tray (250) can be prevented from melting or thermally deforming due to heat provided from the lower heater described later.

The lower tray (250) may include a lower tray body (251) forming a lower chamber (252) that is part of the ice chamber (111).

The above lower tray body (251) can define a plurality of lower chambers (252).

For example, the plurality of lower chambers (252) may include a first lower chamber (252a), a second lower chamber (252b), and a third lower chamber (252c).

The above lower tray body (251) may include three chamber walls (252d) forming three independent lower chambers (252a, 252b, 252c), and the three chamber walls (252d) may be formed as one body to form the lower tray body (251).

The first lower chamber (252a), the second lower chamber (252b), and the third lower chamber (152c) may be arranged in a row. For example, the first lower chamber (252a), the second lower chamber (252b), and the third lower chamber (152c) may be arranged in the direction of arrow A with reference to FIG. 16.

The lower chamber (252) may be formed in a hemispherical shape or a shape similar to a hemisphere. That is, the lower part of the spherical ice may be formed by the lower chamber (252).

In this specification, a hemisphere-like shape means a shape that is not a complete hemisphere, but is very close to a hemisphere.

The lower tray (250) may further include a first extension portion (253) extending horizontally from the upper edge of the lower tray body (251). The first extension portion (253) may be formed continuously along the perimeter of the lower tray body (251).

The lower tray (250) may further include a peripheral wall (260) extending upward from the upper surface of the first extension portion (253).

The lower surface of the upper tray body (151) can come into contact with the upper surface (251e) of the lower tray body (251).

The above-mentioned peripheral wall (260) can surround the upper tray body (151) mounted on the upper surface (251e) of the lower tray body (251).

The above-mentioned peripheral wall (260) may include a first wall (260a) surrounding the vertical wall (153a) of the upper tray body (151), and a second wall (260b) surrounding the curved wall (153b) of the upper tray body (151).

The first wall (260a) is a vertical wall extending vertically from the upper surface of the first extension portion (253). The second wall (260b) is a curved wall formed in a shape corresponding to the upper tray body (151). That is, the second wall (260b) may be rounded in a direction away from the lower chamber (252) as it goes upward from the first extension portion (253).

The lower tray (250) may further include a second extension (254) extending horizontally from the peripheral wall (260).

The second extension (254) may be positioned higher than the first extension (253). Accordingly, the first extension (253) and the second extension (254) form a step.

The second extension (254) may include a first upper protrusion (255) for insertion into a slot (218) of the lower case (210). The first upper protrusion (255) may be arranged to be spaced apart from the peripheral wall (260) in the horizontal direction.

For example, the first upper protrusion (255) may protrude upward from the upper surface of the second extension (254) at a position adjacent to the first wall (260a).

Although not limited, a plurality of first upper protrusions (255) may be spaced apart in the direction of arrow A based on Fig. 6. The first upper protrusions (255) may be extended in a curved shape, for example.

The second extension portion (254) may further include a first lower protrusion (257) to be inserted into a protrusion groove of a lower supporter (270) to be described later. The first lower protrusion (257) may protrude downward from the lower surface of the second extension portion (254).

Although not limited, a plurality of first lower protrusions (257) may be spaced apart in the direction of arrow A.

The first upper protrusion (255) and the first lower protrusion (257) may be positioned on opposite sides with respect to the upper and lower sides of the second extension portion (254). At least a portion of the first upper protrusion (255) may overlap with the second lower protrusion (257) in the upper and lower directions.

A plurality of through holes (256) can be formed in the second extension portion (254).

The plurality of through holes (256) may include a first through hole (256a) through which the first fastening boss (216) of the lower case (210) passes, and a second through hole (256b) through which the second fastening boss (217) of the lower case (210) passes.

For example, a plurality of first through holes (256a) may be arranged spaced apart in the direction of arrow A in Fig. 16.

Additionally, a plurality of second through holes (256b) may be arranged spaced apart in the direction of arrow A in Fig. 16.

The plurality of first through holes (256a) and the plurality of second through holes (256b) may be positioned on opposite sides with respect to the lower chamber (252).

Some of the plurality of second through holes (256b) may be located between two adjacent first upper protrusions (255). Additionally, some of the plurality of second through holes (256b) may be located between two first lower protrusions (257).

The second extension (254) may further include a second upper protrusion (258). The second upper protrusion (258) may be positioned on the opposite side of the first upper protrusion (255) with respect to the lower chamber (252).

The second upper protrusion (258) may be positioned horizontally apart from the peripheral wall (260). For example, the second upper protrusion (258) may protrude upward from the upper surface of the second extension (254) at a position adjacent to the second wall (260b).

Although not limited, a plurality of second upper protrusions (258) may be spaced apart in the direction of arrow A of FIG. 16.

The second upper protrusion (258) can be accommodated in the receiving groove (218a) of the lower case (210). With the second upper protrusion (258) accommodated in the receiving groove (218a), the second upper protrusion (258) can come into contact with the curved wall (215) of the lower case (210).

The peripheral wall (260) of the lower tray (250) may include a first coupling protrusion (262) for coupling with the lower case (210).

The first coupling protrusion (262) may protrude horizontally from the first wall (260a) of the peripheral wall (260). The first coupling protrusion (262) may be located on the upper side of the first wall (260a).

The above first coupling protrusion (262) may include a neck portion (262a) whose diameter is reduced compared to other parts. The neck portion (262a) may be inserted into a first coupling slit (214b) formed in a peripheral wall (214) of the lower case (210).

The peripheral wall (260) of the lower tray (250) may further include a second coupling protrusion (260c) for coupling with the lower case (210).

The second coupling protrusion (260c) may protrude horizontally from the second wall (260b) of the peripheral wall (260). The second coupling protrusion (260c) may be inserted into the second coupling slit (215a) formed in the peripheral wall (214) of the lower case (210).

The second extension (254) may further include a second lower protrusion (266). The second lower protrusion (266) may be positioned on the opposite side of the second lower protrusion (257) with respect to the lower chamber (252).

The second lower protrusion (266) may protrude downward from the lower surface of the second extension portion (254). The second lower protrusion (266) may extend in a straight shape, for example.

Some of the plurality of first through holes (256a) may be located between the second lower protrusion (266) and the lower chamber (252).

The above second lower protrusion (266) can be accommodated in a guide groove formed in a lower supporter (270) to be described later.

The second extension (254) may further include a side restriction (264). The side restriction (264) restricts the lower tray (250) from moving in a horizontal direction while it is coupled with the lower case (210) and the lower supporter (270).

The side restriction portion (264) protrudes laterally from the second extension portion (254), and the upper and lower lengths of the side restriction portion (264) are formed to be greater than the thickness of the second extension portion (254). For example, a part of the side restriction portion (264) is positioned higher than the upper surface of the second extension portion (254), and another part is positioned lower than the lower surface of the second extension portion (254).

Accordingly, a part of the side limiting portion (264) may contact the side of the lower case (210), and another part may contact the side of the lower supporter (270).

<Lower Supporter>

FIG. 20 is a top perspective view of a lower supporter according to an embodiment of the present invention, FIG. 21 is a bottom perspective view of a lower supporter according to an embodiment of the present invention, and FIG. 22 is a cross-sectional view showing an assembled state of the lower assembly.

Referring to FIGS. 20 to 22, the lower supporter (270) may include a supporter body (271) that supports the lower tray (250).

The above supporter body (271) may include three chamber receiving portions (272) for receiving three chamber walls (252d) of the lower tray (250). The chamber receiving portions (272) may be formed in a hemispherical shape.

The above supporter body (271) may include a lower opening (274) for the lower ejector (400) to pass through during the ejection process. For example, the supporter body (271) may be provided with three lower openings (274) corresponding to three chamber receiving portions (272).

A reinforcing rib (275) for reinforcement may be provided along the perimeter of the lower opening (274).

In addition, two adjacent chamber walls (252d) among the three chamber walls (252d) can be connected by a connecting rib (273). This connecting rib (273) can reinforce the strength of the chamber walls (252d).

The lower supporter (270) may further include a first extension wall (285) extending horizontally from the upper end of the supporter body (271).

The lower supporter (270) may further include a second extension wall (286) formed at a level with the first extension wall (285) at the edge of the first extension wall (285).

The upper surface of the second extension wall (286) may be positioned higher than the first extension wall (285).

The first extension part (253) of the lower tray (250) can be secured to the upper surface (271a) of the supporter body (271), and the second extension wall (286) can surround the side surface of the first extension part (253) of the lower tray (250). At this time, the second extension wall (286) can come into contact with the side surface of the first extension part (253) of the lower tray (250).

The lower supporter (270) may further include a protrusion groove (287) for receiving the first lower protrusion (257) of the lower tray (250).

The above protrusion groove (287) may be extended in a curved shape. The above protrusion groove (287) may be formed, for example, in the second extension wall (286).

The lower supporter (270) may further include a first fastening groove (286a) to which a first fastening member (B2) penetrating the first fastening boss (216) of the upper case (210) is fastened.

The above first fastening groove (286a) may be provided, for example, in the second extension wall (286).

A plurality of first fastening grooves (286a) may be arranged spaced apart from each other in the direction of arrow A on the second extension wall (286). Some of the plurality of first fastening grooves (286a) may be positioned between two adjacent protruding grooves (287).

The above lower supporter (270) may further include a boss penetration hole (286b) for the second fastening boss (217) of the upper case (210) to penetrate therethrough.

The above boss penetration hole (286b) may be provided, for example, in the second extension wall (286). The second extension wall (286) may be provided with a sleeve (286c) surrounding the second fastening boss (217) penetrating the boss penetration hole (286b). The sleeve (286c) may be formed in a cylindrical shape with an open bottom.

The above first fastening member (B2) can be fastened to the first fastening groove (286a) after passing through the first fastening boss (216) from the upper side of the lower case (210).

The above second fastening member (B3) can be fastened to the second fastening boss (217) at the bottom of the lower supporter (270).

The lower end of the sleeve (286c) may be positioned at the same height as the lower end of the second fastening boss (217) or may be positioned lower than the lower end of the second fastening boss (217).

Therefore, during the fastening process of the second fastening member (B3), the head of the second fastening member (B3) may come into contact with the second fastening boss (217) and the lower surface of the sleeve (286c) or may come into contact with the lower surface of the sleeve (286c).

The lower supporter (270) may further include an outer wall (280) arranged to surround the lower tray body (251) while being spaced apart from the outer side of the lower tray body (251).

The above outer wall (280) may, for example, extend downward along the edge of the second extension wall (286).

The lower supporter (270) may further include a plurality of hinge bodies (281, 282) for connecting to each hinge supporter (135, 136) of the upper case (210).

The above plurality of hinge bodies (281, 282) may be spaced apart from each other in the direction of arrow A of Fig. 20. Each of the above hinge bodies (281, 282) may further include a second hinge hole (281a).

The shaft connection part (353) of the first link (352) can pass through the second hinge hole (281). The connection shaft (370) can be connected to the shaft connection part (353).

The interval between the plurality of hinge bodies (281, 282) is smaller than the interval between the plurality of hinge supporters (135, 136). Therefore, the plurality of hinge bodies (281, 282) can be positioned between the plurality of hinge supporters (135, 136).

The lower supporter (270) may further include a coupling shaft (283) to which the second link (356) is rotatably connected. The coupling shaft (383) may be provided on each of both sides of the outer wall (280).

In addition, the lower supporter (270) may further include an elastic member coupling portion (284) to which the elastic member (360) is coupled. The elastic member coupling portion (284) may form a space in which a portion of the elastic member (360) may be accommodated. As the elastic member (360) is accommodated in the elastic member coupling portion (284), interference of the elastic member (360) with surrounding structures may be prevented.

In addition, the elastic member joining portion (284) may include a catch portion (284a) for catching the lower end of the elastic member (370).

Fig. 24 is a cross-sectional view taken along line A-A of Fig. 3a, and Fig. 25 is a drawing showing a state in which ice formation is completed in the drawing of Fig. 24.

Figure 24 shows a state in which the upper tray and the lower tray are in contact.

First, referring to Fig. 24, the ice chamber (111) is completed as the upper tray (150) and the lower tray (250) come into contact in the vertical direction.

The upper surface (251e) of the lower tray body (251) is in contact with the lower surface (151a) of the upper tray body (151).

At this time, when the upper surface (251e) of the lower tray body (251) is in contact with the lower surface (151a) of the upper tray body (151), the elastic force of the elastic member (360) is applied to the lower supporter (270).

The elastic force of the above elastic member (360) is applied to the lower tray (250) by the lower supporter (270), so that the upper surface (251e) of the lower tray body (251) presses the lower surface (151a) of the upper tray body (151).

Accordingly, when the upper surface (251e) of the lower tray body (251) is in contact with the lower surface (151a) of the upper tray body (151), the surfaces are mutually pressed, thereby improving the adhesion.

In this way, when the adhesion between the upper surface (251e) of the lower tray body (251) and the lower surface (151a) of the upper tray body (151) increases, there is no gap between the two surfaces, so that the formation of a thin strip-shaped ice along the perimeter of the spherical ice after ice making is completed can be prevented.

The first extension part (253) of the lower tray (250) is mounted on the upper surface (271a) of the supporter body (271) of the lower supporter (270). Then, the second extension wall (286) of the lower supporter (270) comes into contact with the side surface of the first extension part (253) of the lower tray (250).

The second extension part (254) of the lower tray (250) can be mounted on the second extension wall (286) of the lower supporter (270).

In a state where the lower surface (151a) of the upper tray body (151) is seated on the upper surface (251e) of the lower tray body (251), the upper tray body (151) can be accommodated in the inner space of the peripheral wall (260) of the lower tray (250).

At this time, the vertical wall (153a) of the upper tray body (151) is arranged to face the vertical wall (260a) of the lower tray (250), and the curved wall (153b) of the upper tray body (151) is arranged to face the curved wall (260b) of the lower tray (250).

The outer surface of the chamber wall (153) of the upper tray body (151) is spaced apart from the inner surface of the peripheral wall (260) of the lower tray (250). That is, a space is formed between the outer surface of the chamber wall (153) of the upper tray body (151) and the inner surface of the peripheral wall (260) of the lower tray (250).

Water supplied through the above water supply unit (180) is accommodated in the ice chamber (111). If an amount of water supplied is greater than the volume of the ice chamber (111), water that is not accommodated in the ice chamber (111) is located in the space between the outer surface of the chamber wall (153) of the upper tray body (151) and the inner surface of the peripheral wall (260) of the lower tray (250).

Therefore, according to the present embodiment, even if a larger amount of water is supplied than the volume of the ice chamber (111), water can be prevented from overflowing from the ice maker (100).

Meanwhile, the lower tray body (251) may further be provided with a heater contact portion (251a) to increase the contact area with the lower heater (296).

The heater contact portion (251a) may protrude from the lower surface of the lower tray body (251). For example, the heater contact portion (251a) may be formed in a ring shape on the lower surface of the lower tray body (251). In addition, the lower surface of the heater contact portion (251a) may be flat.

The lower tray body (251) may further include a convex portion (251b) formed so that a lower portion thereof is convexly formed upward. That is, the convex portion (251b) may be arranged to be convex toward the inside of the ice chamber (111).

A recessed portion (251b) is formed on the lower side of the convex portion (251b) so that the thickness of the convex portion (251b) is substantially the same as the thickness of other parts of the lower tray body (251).

As used herein, the term “substantially identical” includes things that are completely identical and things that are not identical but are similar enough that there is little difference.

The above convex portion (251b) can be positioned to face the lower opening (274) of the lower supporter (270) in the vertical direction.

And, the lower opening (274) can be located vertically downward of the lower chamber (252). That is, the lower opening (274) can be located vertically downward of the convex portion (251b).

The diameter (D1) of the above convex portion (251b) can be formed smaller than the diameter (D2) of the lower opening (274).

When cold air is supplied to the ice chamber (111) while water is supplied to the ice chamber (111), the liquid water changes into solid ice. At this time, the water expands in the process of changing into ice, and the expansion force of the water is transferred to each of the upper tray body (151) and the lower tray body (251).

In the present embodiment, another part of the lower tray body (251) is surrounded by the supporter body (271), but the part corresponding to the lower opening (274) of the support body (271) (hereinafter referred to as “corresponding part”) is not surrounded.

If the lower tray body (251) is formed in a perfect hemispherical shape, when the expansion force of the water is applied to a corresponding portion of the lower tray body (251) corresponding to the lower opening (274), the corresponding portion of the lower tray body (251) is deformed toward the lower opening (274).

In this case, before ice is created, the water supplied to the ice chamber (111) exists in a spherical shape, but after ice creation is completed, additional ice in the form of protrusions is created in the space created by the deformation of the corresponding portion of the lower tray body (251) from the spherical ice.

Therefore, in this embodiment, a convex portion (251b) was formed on the lower tray body (251) in consideration of deformation of the lower tray body (251) so as to make the ice as close to a perfect sphere as possible after ice making is completed.

In this embodiment, before ice is created, the water supplied to the ice chamber (111) does not have a spherical shape, but after ice creation is completed, the convex portion (251b) of the lower tray body (251) is deformed toward the lower opening (274), so that spherical ice can be created.

In this embodiment, the diameter (D1) of the convex portion (251b) is formed smaller than the diameter (D2) of the lower opening (274), so that the convex portion (251b) can be deformed and positioned on the inside of the lower opening (274).

<Upper Ejector>

Hereinafter, with reference to the drawings, the structure of the upper ejector and its linkage structure with the lower assembly will be described in more detail.

Fig. 26 is a perspective view of the ice maker with the upper case removed, viewed from one side. Fig. 27 is a perspective view of the ice maker with the upper case removed, viewed from the other side.

Fig. 28 is a side view showing the appearance of the lower tray and the upper ejector. Fig. 29 is a side view showing the state of Fig. 28, with the lower tray rotating and the upper ejector lowered. Fig. 30 is a perspective view showing the state of the upper ejector and the second link being coupled. Fig. 31 is a bottom perspective view of the upper ejector. Fig. 32 is a perspective view of the first link as seen from one side. Fig. 33 is a perspective view of the second link as seen from the other side.

As illustrated, the ice maker (100) according to the present invention may further include an upper ejector (300) so that ice can be separated from the upper assembly (110).

The upper ejector (300) may include an ejector body (310) and a plurality of upper ejecting pins (320) extending in an intersecting direction from the ejector body (310).

For example, the upper ejector body (310) may be formed horizontally, and the upper ejecting pin (320) may be formed to extend vertically from the lower side of the ejector body (310).

The upper ejector body (310) may have a plurality of grooves formed along the longitudinal direction. In addition, a plurality of reinforcing ribs (311) may be formed in the grooves. The reinforcing ribs (311) may be formed parallel to the longitudinal direction of the upper ejector body (310). In addition, the reinforcing ribs (311) may be formed in a direction intersecting the longitudinal direction of the upper ejector body (310).

In addition, a hollow (321) may be formed in the upper ejecting pin (320). Accordingly, the strength of the upper ejecting pin (320) may be improved.

In addition, for ice ejection, when the lower end of the upper ejection pin (320) presses the upper tray (150) of a spherical shape, i.e., the upper side of the ice chamber (111), stable contact is possible through the hollow (321).

At both ends of the upper ejector body (310), a separation prevention protrusion (312) may be provided to prevent separation from the connection unit (350) while connected to the connection unit (350).

For example, a pair of separation prevention protrusions (312) may protrude in opposite directions from the upper ejector body (310).

In detail, at both ends of the upper ejector body (310), separation-preventing protrusions (312) may be formed so that both sides protrude in a direction intersecting with the upper ejector body (310).

The above separation prevention protrusion (312) may include a circular center portion (312a) and a pair of protrusions (312b) protruding in the radial direction of the center portion (312a) on both sides of the center portion (312a).

Additionally, an upper and lower guide (313) may be provided adjacent to the separation prevention protrusion (312) to guide the upper ejector body (310) to move up and down.

For example, a pair of upper and lower guides (313) may be provided parallel to the separation prevention protrusion (312) at both ends of the upper ejector body (310), and the separation prevention protrusion (312) may be provided further outward.

In detail, the upper and lower guides (313) can be inserted into the guide slot (183) corresponding to the width of the guide slot (183) and guide the upper ejector (300) to move up and down along the guide slot (183).

In addition, the upper and lower guides (313) may be formed in a vertical cross-section in a square shape to limit rotation of the upper ejector (300). This is to ensure that the upper ejecting pin (320) is introduced into the inlet opening (154) of the upper tray (150) at the correct position.

In order for the upper and lower guides (313) to ensure that the upper ejection pin (320) is properly positioned and fed into the inlet opening (154) of the upper tray (150), the forward and backward or left and right movement must be minimized when moving up and down along the guide slot (183). To this end, the upper and lower length, i.e., the height, of the upper and lower guides (313) can be increased.

That is, by increasing the contact area between the upper and lower guides (313) and the guide slot (183), the flow of the upper ejector body (310) can be prevented.

For example, the upper and lower lengths of the upper and lower guides (313) may be formed to be larger than the diameter of the center (312a) of the separation-preventing protrusion (312) that is adjacently coupled.

In addition, the upper and lower guides (313) may be extended toward the lower portion of the upper ejector (300) so that no interference occurs when the upper ejector (300) moves up and down. The lower portion of the upper and lower guides (313) may be positioned lower than the lower surface of the upper ejector body (310).

At this time, in order to prevent interference between the lower portion of the upper and lower guide (313) and the upper case (120), a part of the upper and lower guide (313) can be introduced into the interference prevention groove (126a, 126b) of the upper case (120). Accordingly, the upper and lower movement distance of the upper ejector (300) can be prevented from being reduced.

The upper and lower guides (313) may further include an inclined portion (313a) to guide a portion thereof to be introduced into the interference prevention grooves (126a, 126b) of the upper case (120).

For example, the inclined portion (313a) may be inclined in a direction such that the surface facing the center of the upper ejector body (310) of the lower portion of the pair of upper and lower guides (313) faces outward.

In addition, the pair of upper and lower guides (313) including the inclined portion (313a) may be formed in a symmetrical shape based on the center of the upper ejector body (310).

The upper ejector (300) is connected in conjunction with the lower assembly (200), so that when the lower assembly (200) rotates, the upper ejector (300) can rise and fall.

For example, after ice making is completed, if the lower assembly (200) rotates downward away from the upper assembly (110) for ice ejection, the upper ejector (300) can descend.

Additionally, after the ejection is completed, if the lower assembly (200) rotates upward to be coupled with the upper assembly (110) for water supply, the upper ejector (300) can rise.

When the upper ejector (300) is lowered during the ice removal, ice adhered to the upper assembly (110) can be separated from the upper assembly (110).

The upper ejector (300) is connected to the lower assembly (200) by a connecting unit (350).

The above connecting unit (350) includes a first link (352) for receiving power from the driving unit (180) and rotating the lower supporter (270). Therefore, when the driving unit (180) operates, the first link (352) and the lower supporter (270) rotate simultaneously.

The lower supporter (270) forms hinge bodies (281, 282) on both sides, and a second hinge hole (281a) is formed in each of the hinge bodies (281, 282).

The shaft connecting part (353) of the first link (352) can pass through the second hinge hole (281).

And, the connecting shaft (370) can be connected to the shaft connecting portion (353).

The above shaft connecting portion (353) has a polygonal shaft connecting groove (353c) on the facing surface, and the above shaft connecting portion (353) can be connected by a connecting shaft (370) having a polygonal cross-section, both ends of which are inserted into the above shaft connecting groove (353c).

For example, the shaft connecting portion (353) may have an axial connecting groove (353c) having a square cross-section on the facing surface, and the connecting shaft (370) may have a square cross-section.

The second hinge hole (281a) above can secure free space in the rotational direction of the shaft connection part (353) when the shaft connection part (353) is connected.

Referring to the drawing, the shaft connecting portion (353) includes a circular first center portion (353a) and first engaging portions (353b) protruding radially from both sides of the first center portion (353a), and the second hinge hole (281a) may include a circular second center portion (281b), a second engaging groove (281c) communicating with the second center portion (281b) and recessed radially outwardly from both sides of the second center portion (281b).

Additionally, the width of the second catch groove (281c) may be formed to be larger than the width of the first catch portion (353b).

When the first engaging portion (353b) is inserted into the second engaging groove (281c), a free space can be secured in the second engaging groove (281c) in the rotational direction of the first engaging portion (353b).

In addition, the first link (352) and the lower supporter (270) may be connected by an elastic member (360). The elastic member (360) provides a tensile force between the first link (352) and the lower supporter (270). As an example, the elastic member (360) may be a coil spring. As another example, the elastic member (360) may be a tensile spring.

One end of the elastic member (360) is connected to the first link (352), and the other end is connected to the lower supporter (270).

The above elastic member (360) provides an elastic force that pulls the lower supporter (270) toward the upper tray (150) so that it remains in contact with the upper tray (150) and the lower tray (250).

The first link (352) may have a joining hole (352d) formed at one end to which the end of the elastic member (360) is joined. In addition, the first link (352) may have a joining groove (352d) formed at one end to which the end of the elastic member (360) is joined.

Meanwhile, the connecting unit (350) includes a second link (356) connected to the lower supporter (270) to transmit the rotational force of the lower supporter (270) to the upper ejector (300) when the lower supporter (270) rotates.

That is, the upper ejector (300) can be connected to the lower supporter (270) by the second link (356).

Therefore, the rotational force of the lower assembly (200) can be transmitted to the upper ejector (300) by the second link (356).

And, the upper ejector (300) can be raised and lowered in a straight line by the unit guide (181, 182).

For example, after ice making is completed, if the lower assembly (200) rotates downward away from the upper assembly (110) for ice ejection, the upper ejector (300) can descend.

Additionally, after the ejection is completed, if the lower assembly (200) rotates upward to be coupled with the upper assembly (110) for water supply, the upper ejector (300) can rise.

When the upper ejector (300) is lowered during ice ejection, the upper ejecting pin (320) is drawn into the upper chamber (152) through the inlet opening (154). Then, the ice adhered to the upper tray (150) can be separated from the upper tray (150).

For reference, the upper ejector body (310) of the upper ejector (300) can rise and fall within the guide slot (183) formed in the unit guide (181, 182).

And, when the upper ejector (300) rotates counterclockwise for the lower assembly (200) to separate, the upper ejector (300) descends in response to the rotation angle of the lower assembly (200).

For example, when the lower tray (250) comes into contact with the lower ejector (400), the upper ejector (300) can reach the lowest position.

On the other hand, after the ice is completed, when the lower assembly (200) rotates clockwise for water supply and ice removal, the upper ejector (300) rises corresponding to the rotation angle of the lower assembly (200).

For example, when the lower tray (250) is in contact with the upper tray (150) while being level, the upper ejector (300) can reach the highest position.

<Lower Ejector>

FIG. 34 is a bottom perspective view showing an ice maker and a lower ejector separated from each other according to an embodiment of the present invention, and FIGS. 35 to 36 are perspective views of the lower ejector shown in FIG. 34 when viewed from various directions. In addition, FIG. 37 is a bottom perspective view showing an ice maker and a lower ejector separated from each other according to another embodiment of the present invention, and FIGS. 38 to 39 are perspective views of the lower ejector shown in FIG. 37 when viewed from various directions. In addition, FIG. 40 is a bottom perspective view of the lower ejector according to another embodiment of the present invention.

As described above, the ice maker (100) may further include a lower ejector (400) so that ice adhered to the lower assembly (200) can be separated.

In detail, after ice making is completed, when the lower assembly (200) rotates while being separated from the upper assembly (110), the lower ejector (400) can pressurize the lower assembly (200) so that ice adhered to the lower assembly (200) is separated from the lower assembly (200). At this time, the lower ejector (400) can pressurize the lower tray (250).

The above lower ejector (400) can be fixed to the upper assembly (110), for example.

The lower ejector (400) may include a lower ejector body (410) and a plurality of lower ejecting pins (420) protruding from the lower ejector body (410). The lower ejecting pins (420) may be provided in the same number as the ice chamber (111).

The lower ejector body (410) can be joined to a vertical wall (120a) extending vertically from the upper tray (120). The vertical wall (120a) forms a rear wall of the ice maker. The lower ejector body (410) can be detachably assembled to the vertical wall (120a).

In addition, the lower ejector body (410) may be formed parallel to the vertical wall (120a). In addition, the lower ejector body (410) may form an inclined surface (410a) formed at an angle with respect to the vertical wall (120a) on one side facing the lower tray (250).

Meanwhile, the inclined surface (410a) can be inclined at an angle corresponding to the inclined angle of the lower assembly (200) when the lower assembly (200) is rotated toward the lower ejector (400) for ejection.

That is, when the rotation of the lower assembly (200) for the above-mentioned moving is completed, the inclined surface (410a) and the lower end of the lower assembly (200) can be formed parallel.

Meanwhile, the vertical wall (120a) may be formed integrally with the upper case (120) or may be provided separately from the upper case (120).

In addition, the supporter body (271) may include a lower opening (274) for the lower ejector (400) to pass through during the icing process. The lower opening (274) may be formed in each chamber receiving portion (272).

In addition, the lower ejection pin (420) may be formed to have the same number of lower chambers (252) formed in the lower tray (250), chamber receiving portions (272) in which the lower chambers (252) are received, and lower openings (274) formed in the chamber receiving portions (272).

For example, three lower chambers (252) may be formed in the lower tray (250). In addition, three chamber receiving portions (272) may be formed in the supporter body (271) to receive the three lower chambers (252), respectively, and a lower opening (274) may be provided in each of the chamber receiving portions (272). In addition, three lower ejecting pins (420) may also be provided to pressurize the three lower chambers (252) by passing through each of the lower openings (274).

Therefore, when the lower assembly (200) rotates toward the lower ejector (400) while the lower ejector (400) is fixed, the lower ejecting pin (420) can penetrate the lower opening (274) and pressurize the lower tray (250). Then, the lower tray (250) is deformed by the pressing force of the lower ejecting pin (420), and the ice in the lower chamber (252) can be separated from the lower tray (250).

Meanwhile, the lower ejection pin (420) can be formed to have at least one shorter length.

For example, a total of three lower ejection pins (420) may be provided. Among them, the length of the lower ejection pin (422, see FIG. 40) arranged in the middle may be formed shorter than the length of the lower ejection pins (421, 423, see FIG. 40) arranged on both sides.

As described above, if the length of one of the lower ejection pins (422) among the plurality of lower ejection pins (421, 422, 423) is formed short, the load applied to the motor during ejection can be reduced.

In detail, when the length of one of the lower ejecting pins (421, 422, 423) is formed short, during the process of rotating the lower assembly (200), the lower tray (250) first contacts two of the lower ejecting pins (421, 423) and then contacts the remaining lower ejecting pin (422).

And, when the lower assembly (200) is continuously rotated, the two lower ejecting pins (421, 423) pressurize the lower tray (250), and the remaining one lower ejecting pin (422) pressurizes the lower tray (250) later.

And, after the ice in the lower tray (250) that is first pressed by the two lower ejecting pins (421, 423) is separated from the surface of the lower tray (250), the ice in the lower tray (250) that is later pressed by the lower ejecting pin (422) in the middle can be separated from the surface of the lower tray (250).

That is, the ice on the lower tray (250) can be sequentially separated from the surface of the lower tray (250).

Accordingly, the load applied to the motor included in the driving unit (180) that provides rotational power to the lower assembly (200) is distributed with a time difference, so that the load applied to the motor can be reduced instantaneously.

On the other hand, if the lengths of the three lower ejecting pins (421, 422, 423) are formed to be the same, the lower tray (250) comes into contact with the three lower ejecting pins (421, 422, 423) simultaneously during the process of rotating the lower assembly (200).

And, when the lower assembly (200) is continuously rotated, the three lower ejecting pins (421, 422, 423) pressurize the lower tray (250) simultaneously, so that the lower tray (250) is deformed, and the pressing force of the three lower ejecting pins (421, 422, 423) is transmitted to the ice, so that the three ices can be separated from the surface of the lower tray (250) almost simultaneously.

At this time, the load applied to the motor included in the driving unit (180) cannot help but increase.

In addition, the lower ejection pin (420) may include a pin body (420a) protruding from the lower ejector body (410) and a pressurizing portion (420b) formed by extending from the pin body (420a).

For example, the pin body (420a) and the pressurizing portion (420b) may be bent to form a certain angle, and the pressurizing portion (420b) may extend from the pin body (420a) to pressurize the center of the lower tray (250).

In detail, the above pin body (420a) may be formed in a curved shape and may be formed to slope downward from one side connected to the lower ejector body (410) to the other side.

As another example, the pin body (420a) may be formed to be inclined downward from one side to the other side connected to the lower ejector body (410), but at least a portion thereof may be formed to be rounded in a curved shape.

As another example, the pin body (420a) may be formed to have a rounded curved shape so that it slopes downward from one side connected to the lower ejector body (410) to the other side, but at least a portion of it is positioned on an extension of the rotational trajectory of the lower assembly (200).

The above pressurizing portion (420b) may be formed to extend from the pin body (420a) and contact the center of the lower tray (250) to pressurize it when the lower assembly (200) rotates for separation.

In detail, the pressurizing portion (420b) can be connected to the pin body (420a) at a certain angle so as to increase the area of contact with the center of the lower tray (250).

Additionally, the pressurizing portion (420b) may include a pressurizing inclined portion (420c) that comes into contact with the lower tray (250).

For example, the pressing slope (420c) can be formed by forming the length of the upper portion of the pressing portion (420b) to be longer than the length of the lower portion.

The above-mentioned pressure slope (420c) can be formed so that the upper part of the above-mentioned pressure slope (420c) first contacts the lower tray (250) during the ice-making process.

If the lower tray (250) rotates while the pressure slope (420c) is not formed on the pressure portion (420b), the lower end of the pressure portion (420b) comes into contact with the lower tray (250) first. In this case, only a part of the pressure portion (420b) presses the lower tray (250) or deformation of the lower tray (250) occurs at a location spaced from the center of the lower tray (250), which may deteriorate the ice-making performance.

However, in the case where the pressure inclined portion (420c) is formed on the pressure portion (420b) as in the present embodiment, during the rotation process of the lower tray (250), the upper portion of the pressure inclined portion (420c) may first contact the lower tray (250), or the upper portion and the lower portion may contact each other at the same time.

For example, the pressurized inclined portion (420c) may be formed to coincide with the center line of the lower tray (250) when the lower assembly (200) reaches a lower limit (approximately 112 degrees) of the rotation angle at which it contacts the lower tray (250).

When the pressurizing slope (420c) is formed as described above, when the upper part of the pressurizing slope (420c) comes into contact first or the upper and lower parts come into contact simultaneously, the pressurizing part (420b) can pressurize the central part of the lower tray, thereby improving the ice-making performance.

In addition, as described above, when the lower assembly (200) is further rotated while the pressurizing portion (420b) is in contact with the center of the lower tray (250), there is an advantage in that the pressurizing force is continuously applied to the center of the lower tray (250).

Additionally, the pressurizing portion (420b) may form a concave groove portion (424) at the end that comes into contact with the lower tray (250).

Accordingly, the strength of the lower ejection pin (420) can be improved. In addition, for ice ejection, when the pressurizing portion (420b) presses the convex lower side of the spherical lower tray (250), i.e., the lower chamber (111), stable contact is possible by the groove portion (424), and the problem of ice breaking can be prevented as the force is concentrated in one place.

If the end of the pressurizing portion (420b) is flat, the lower ejecting pin (420) comes into point contact with the spherical lower chamber (111), and as the contact area decreases, there is a risk that the pressurizing force will not be properly transmitted. Or, if the force is concentrated in one place, there is a risk that the ice will break.

On the other hand, in the case of the present invention, since a concave groove (424) is formed in the pressurizing portion (420b), the lower ejecting pin (420) can make line contact or surface contact with the spherical lower chamber (111), and as the contact area increases, there is an advantage in that the pressurizing force is properly transmitted. In addition, since the force is distributed, there is also an advantage in that the problem of ice breaking can be prevented.

Additionally, at least one reinforcing hole (425) may be provided on the bottom surface of the pin body (420a) of the lower ejection pin (420).

In addition, by extending the length of the lower ejection pin (420), when the lower assembly (200) rotates for ejection, even if the lower assembly (200) does not reach the maximum ejection position (approximately 115 degrees) due to the tolerance of the motor gear included in the driving unit (180), sufficient pressure can be transmitted to the lower chamber (111).

Meanwhile, the lower ejector (400) can be combined with the vertical wall (120a) in various ways.

Referring to FIG. 34 and FIG. 37, the vertical wall (120a) can form a protrusion (121a) that protrudes forward toward the lower tray (250) on one side facing the lower tray (250) when the lower assembly (200) for moving rotates.

And, a concave cavity (122a) can be formed at the lower end of the protrusion (121a) toward the rear. And, the lower ejector body (410) of the lower ejector (400) can be accommodated in the cavity (122a). Therefore, the lower ejector body (410) can be positioned at the lower end of the protrusion (121a).

In addition, the cavity (122a) may form guide slots (123a) on both sides. In addition, guide protrusions (415) that are inserted while sliding into the guide slots (123a) may be formed on both sides of the lower ejector body (410).

Accordingly, the lower ejector body (410) can be combined by sliding upward from the lower side of the vertical wall (120a). At this time, the guide protrusions (415) on both sides of the lower ejector body (410) are inserted into the guide slots (123a) formed on both sides of the cavity (122a).

Referring to FIG. 31, the lower ejector body (410) can be coupled to the upper surface (122b) of the cavity (122a) using a fastening means (430) such as a bolt or screw while being slidably coupled to the vertical wall (120a) as described above.

To this end, the lower ejector body (410) may be provided with a concave fastening groove (416) from the front to the rear. A fastening hole (416a) through which a fastening means (430) passes may be formed on the upper surface of the fastening groove (416).

In addition, the fastening groove (416) may be formed on an inclined surface (410a). The fastening groove (410a) may have a shape in which its width in the front-back direction gradually decreases from the top to the bottom.

Additionally, a fastening groove (416) can be formed between the lower ejecting pins (420).

When the fastening groove (416) is formed as described above, the upper surface of the fastening groove (416) and the upper surface (122b) of the cavity (122a) are in surface contact with each other, and the upper surface of the fastening groove (416) and the upper surface (122b) of the cavity (122a) are fastened by the fastening means (430) from below the fastening groove (416), so that the lower ejector body (410) can be more easily fixed to the vertical wall (120a). In addition, the lower ejector (400) can be coupled to the vertical wall (120a) without the fastening portion being exposed to the outside.

Referring to Figure 34, an upwardly concave joining groove (122c) can be additionally formed at the bottom of the vertical wall (120a).

And, the lower ejector body (410) can be coupled to the upper surface (122d) of the coupling groove (122c) using a fastening means (430) such as a bolt or screw while being slidably coupled to the vertical wall (120a).

To this end, the lower ejector body (410) may form an extension (417) that protrudes rearwardly at the bottom. In addition, by the extension (417), the lower ejector body (410) may form a joining step (418) facing the upper surface of the joining groove (122c) at the bottom of the rear. A joining boss (417b) having a joining hole (417a) formed therein may be formed at the extension (417).

When the joining groove (122c) and the extension (417) are formed as described above, the upper surface (122d) of the joining groove (122c) and the joining step (418) are in surface contact with each other, and the upper surface (122d) of the joining groove (122c) and the extension (417) are joined by the joining means (430) from below the extension (417), so that the lower ejector body (410) can be more easily fixed to the vertical wall (120a). In addition, the lower ejector (400) can be joined to the vertical wall (120a) without the joining part being exposed to the outside.

When the lower ejector (400) is provided as described above, during the rotation process of the lower assembly (200) for ice separation, even if the ice is not separated from the lower tray (250) by its own weight, the lower tray (250) is pressurized by the lower ejector (400), and as a result, the ice in the lower chamber (252) can be separated from the lower tray (250).

Specifically, as the lower assembly (200) rotates toward the lower ejector (400), the lower tray (250) comes into contact with the lower ejecting pin (420).

And, when the lower assembly (200) is continuously rotated toward the lower ejector (400), the lower ejecting pin (420) presses the lower tray (250), so that the lower tray (250) is deformed, and the pressing force of the lower ejecting pin (420) is transmitted to the ice, so that the ice can be separated from the surface of the lower tray (250). The ice separated from the surface of the lower tray (250) can fall downward and be stored in the ice bin (102).

When the lower assembly (200) is rotated for the above-described separation, there is a concern that the lower assembly (200) may not reach the maximum separation position (approximately 115 degrees) due to the tolerance of the motor gear included in the driving unit (180). In this case, a problem occurs in which separation does not proceed perfectly. Therefore, in order to ensure separation, a control may be performed to additionally rotate the motor included in the driving unit (180) so that the lower assembly (200) can exceed the maximum separation position (approximately 115 degrees).

Below, a process for making ice using an ice maker according to one embodiment of the present invention will be described.

Fig. 41 is a cross-sectional view taken along line B-B of Fig. 3a in a water supply state, and Fig. 42 is a cross-sectional view taken along line B-B of Fig. 3a in a de-icing state.

Fig. 43 is a cross-sectional view taken along line B-B of Fig. 3a in a state where ice making is complete, Fig. 44 is a cross-sectional view taken along line B-B of Fig. 3a in a state where ice breaking is initial, and Fig. 45 is a cross-sectional view taken along line B-B of Fig. 3a in a state where ice breaking is complete.

Referring to FIGS. 41 to 45, first, the lower assembly (200) is rotated to a water supply standby position.

In the water supply standby position of the lower assembly (200), the upper surface (251e) of the lower tray (250) is spaced apart from the lower surface (151e) of the upper tray (150).

Although not limited, the lower surface (151e) of the upper tray (150) may be positioned at a height equal to or similar to the rotation center (C2) of the lower assembly (200).

In this embodiment, the direction in which the lower assembly (200) rotates for moving (counterclockwise with respect to the drawing) is called the forward direction, and the opposite direction (clockwise) is called the reverse direction.

Although not limited, the angle formed by the upper surface (251e) of the lower tray (250) and the lower surface (151e) of the upper tray (150) at the water supply standby position of the lower assembly (200) may be approximately 8 degrees.

In this state, water supplied from the outside is guided by the water supply unit (190) and supplied to the ice chamber (111).

At this time, water is supplied to the ice chamber (111) through one of the multiple inlet openings (154) of the upper tray (150).

When the water supply is complete, some of the water may be filled in the lower chamber (252), and another part may be filled in the space between the upper tray (150) and the lower tray (250).

Another portion of water may be filled in the upper chamber (151). Of course, depending on the angle formed between the upper surface (251e) of the lower tray (250) and the lower surface (151e) of the upper tray (150), or the volume of the lower chamber (252) and the upper chamber (152), water may not be located in the upper chamber (152) after the water supply is completed.

In the present embodiment, there is no channel for mutual communication between the three lower chambers (252) in the lower tray (250).

Even if there is no channel for the movement of water in the lower tray (250), the upper surface (251e) of the lower tray (250) is spaced apart from the lower surface (151e) of the upper tray (150), so that when a specific lower chamber is filled with water during the water supply process, the water can flow to another lower chamber along the upper surface (251e) of the lower tray (250).

Accordingly, each of the plurality of lower chambers (252) of the lower tray (250) can be filled with water.

In addition, in the case of the present embodiment, since there is no channel for communication between the lower chambers (252) in the lower tray (250), the presence of additional ice in the form of protrusions around the ice after ice creation is completed can be prevented.

In the state where the water supply is completed, the lower assembly (200) is rotated in the reverse direction as shown in Fig. 42. When the lower assembly (200) is rotated in the reverse direction, the upper surface (251e) of the lower tray (250) becomes closer to the lower surface (151e) of the upper tray (150).

Then, the water between the upper surface (251e) of the lower tray (250) and the lower surface (151e) of the upper tray (150) is divided and distributed into each of the plurality of upper chambers (152).

And, when the upper surface (251e) of the lower tray (250) and the lower surface (151e) of the upper tray (150) are completely in contact, the upper chamber (152) is filled with water.

The position of the lower assembly (200) in which the upper surface (251e) of the lower tray (250) and the lower surface (151e) of the upper tray (150) are in contact can be referred to as the ice-making position.

Ice making begins when the lower assembly (200) is moved to the ice making position.

During ice making, the pressure of the water is less than the force to deform the convex portion (251b) of the lower tray (250), so the convex portion (251b) is not deformed and maintains its original shape.

When ice making begins, the lower heater (296) is turned on. When the lower heater (296) is turned on, the heat of the lower heater (296) is transferred to the lower tray (250).

Therefore, when ice making is performed with the lower heater (296) turned on, ice is created from the top inside the ice chamber (111).

That is, water is changed into ice from the inlet opening (154) side within the ice chamber (111). Since ice is created from the upper side within the ice chamber (111), the air bubbles within the ice chamber (111) move downward.

Since the ice chamber (111) is formed in a spherical shape, the horizontal cross-sectional area is different depending on the height of the ice chamber (111).

Accordingly, the output of the lower heater (296) can be varied depending on the height at which ice is generated in the ice chamber (111).

The horizontal cross-sectional area increases from top to bottom, reaches a maximum at the boundary between the upper tray (150) and lower tray (250), and then decreases downward.

In the process of ice being generated from the top to the bottom in the ice chamber (111), the ice comes into contact with the upper surface of the block portion (251b) of the lower tray (250).

In this state, if ice is continuously generated, the block part (251b) is pressurized and deformed as shown in Fig. 43, and when ice making is completed, spherical ice can be generated.

The undocumented control unit can determine whether ice making is complete based on the temperature detected by the temperature sensor (500).

The lower heater (296) may be turned off upon completion of ice making or before completion of ice making.

When ice making is completed, the upper heater (148) is first turned on to separate the ice. When the upper heater (148) is turned on, the heat of the upper heater (148) is transferred to the upper tray (150), so that the ice can be separated from the surface (inner surface) of the upper tray (150).

When the upper heater (148) operates for a set time, the upper heater (148) is turned off and the driving unit (180) operates so that the lower assembly (200) can rotate in the forward direction.

As shown in Fig. 44, when the lower assembly (200) is rotated in the forward direction, the lower tray (250) is separated from the upper tray (150).

And, the rotational power of the lower assembly (200) is transmitted to the upper ejector (300) by the connecting unit (350). Then, the upper ejector (300) is lowered by the unit guide (181, 182), and the upper ejecting pin (320) is drawn into the upper chamber (152) through the inlet opening (154).

During the ice ejection process, ice can be separated from the upper tray (250) before the upper ejecting pin (320) pressurizes the ice. That is, ice can be separated from the surface of the upper tray (150) by the heat of the upper heater (148).

In this case, the ice can be rotated together with the lower assembly (250) while being supported by the lower tray (250).

Alternatively, even if the heat of the upper heater (148) is applied to the upper tray (150), there may be cases where ice is not separated from the surface of the upper tray (150).

Therefore, when the lower assembly (200) rotates in the forward direction, the ice can be separated from the lower tray (250) while in close contact with the upper tray (150).

In this state, during the rotation process of the lower assembly (200), the upper ejecting pin (320) that has passed through the inlet opening (154) presses the ice that is in close contact with the upper tray (150), so that the ice can be separated from the upper tray (150). The ice separated from the upper tray (150) can be supported again by the lower tray (250).

When the ice is rotated together with the lower assembly (250) while being supported by the lower tray (250), the ice can be separated from the lower tray (250) by its own weight even if no external force is applied to the lower tray (250).

If, during the rotation process of the lower assembly (200), the ice is not separated from the lower tray (250) by its own weight, as shown in FIG. 45, the ice can be separated from the lower tray (250) if the lower tray (250) is pressurized by the lower ejector (400).

Specifically, during the process of rotating the lower assembly (200), the lower tray (250) comes into contact with the lower ejecting pin (420).

And, when the lower assembly (200) is continuously rotated in the forward direction, the lower ejecting pin (420) presses the lower tray (250), so that the lower tray (250) is deformed, and the pressing force of the lower ejecting pin (420) is transmitted to the ice, so that the ice can be separated from the surface of the lower tray (250). The ice separated from the surface of the lower tray (250) can fall downward and be stored in the ice bin (102).

After the ice is separated from the lower tray (250), the lower assembly (200) is rotated in the reverse direction by the driving unit (180).

When the lower ejection pin (420) is separated from the lower tray (250) during the process of the lower assembly (200) rotating in the reverse direction, the deformed lower tray can be restored to its original shape.

And, during the reverse rotation process of the lower assembly (200), the rotational force is transmitted to the upper ejector (300) by the connecting unit (350), so that the upper ejector (300) rises and the upper ejecting pin (320) falls out of the upper chamber (152).

And, when the lower assembly (200) reaches the water supply standby position, the driving unit (180) stops and water supply starts again.

100: Ice Maker 110: Upper Assembly
120: Upper case 150: Upper tray
170: Upper support 200: Lower assembly
210: Lower case 250: Lower tray
270: Lower supporter 300: Upper ejector
400 : Lower Ejector

Claims (16)

An upper assembly comprising an upper tray forming part of an ice chamber;
A lower assembly comprising a lower tray forming another portion of the ice chamber;
A driving unit located on one side of the lower assembly and rotating the lower assembly;
An upper ejector having an upper ejecting pin for separating ice from the upper tray by descending by the power of the above driving unit; and
It includes a lower ejector having a lower ejecting pin and a lower ejector body that pressurizes the lower tray that rotates by the power of the above driving unit to separate ice from the lower tray.
The above lower ejection pin is an ice maker including a pin body protruding from the lower ejector body and a pressurizing portion extending and bending from the pin body. In paragraph 1,
At the end of the above pressurizing portion, a pressurizing inclined portion is provided to contact the lower tray and pressurize the lower tray.
An ice maker in which the length of the upper part of the pressurized portion is longer than the length of the lower part. In the second paragraph,
An ice maker wherein the pressurizing portion faces the center of the lower tray when the lower assembly rotates in one direction. In paragraph 1,
An ice maker wherein the lower ejection pins are one or more and have different lengths. In paragraph 4,
The above lower ejection pins are three in number,
An ice maker in which the length of the lower ejection pin positioned in the center is shorter than the length of the lower ejection pins positioned on both sides. In paragraph 1,
The upper assembly further includes an upper case having an opening through which a portion of the upper tray passes to fix the position of the upper tray,
An ice maker wherein the upper case includes a cavity in which a portion of the lower ejector is accommodated. In paragraph 6,
The above lower ejector,
An ice maker further comprising a lower ejector body to which the lower ejection pin is coupled and which is accommodated in the cavity. In paragraph 1,
Including a connecting unit connecting the above driving unit and the lower assembly,
The above connecting unit is,
A pair of first links connected to both sides of the lower assembly to transmit power of the above driving unit to the lower assembly;
An ice maker comprising a pair of second links connecting the upper ejector and the lower assembly and transmitting the rotational force of the lower assembly to the upper ejector. In Article 8,
An ice maker in which the upper ejector is lowered by the connecting unit when the lower assembly rotates in one direction. In Article 8,
The upper ejector above
An ice maker comprising an upper ejector body to which the upper ejector pin is coupled and which extends in a direction intersecting the direction in which the upper ejector pin extends. In Article 10,
The upper part of the second link is provided with a hole extending horizontally,
An ice maker having separation-prevention protrusions inserted into the hole and extending in the vertical direction at both ends of the upper ejector body. In Article 10,
An ice maker wherein the upper ejector body includes upper and lower guides protruding in the same direction as the upper ejecting pin. In Article 12,
The upper assembly further includes an upper supporter that is coupled to the lower side of the upper tray and has a portion of the upper tray penetrated therethrough to fix the position of the upper tray.
An ice maker comprising a unit guide having a guide slot into which the upper and lower guides are introduced, the upper supporter guiding the connection unit. In Article 12,
An ice maker wherein the vertical length of the upper and lower guides is greater than the vertical length of the upper ejector body. In Article 12,
The upper assembly further includes an upper case having an opening through which a portion of the upper tray passes to fix the position of the upper tray,
An ice maker, wherein the upper case is provided with an interference prevention groove into which at least a part of the upper and lower guides are introduced. Cabinet with freezer compartment;
Including an ice maker installed within the above cabinet,
The above ice maker,
An upper assembly comprising an upper tray forming part of an ice chamber;
A lower assembly comprising a lower tray forming another portion of the ice chamber;
A driving unit located on one side of the lower assembly and rotating the lower assembly;
An upper ejector having an upper ejecting pin for separating ice from the upper tray by descending by the power of the above driving unit; and
It includes a lower ejector having a lower ejecting pin and a lower ejector body that pressurizes the lower tray that rotates by the power of the above driving unit to separate ice from the lower tray.
A refrigerator in which the lower ejection pin includes a pin body protruding from the lower ejector body and a pressurizing portion extending and bending from the pin body.

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