Refrigerator

Abstract

The utility model relates to a refrigerator which is characterized by comprising a refrigerator body forming a storage space; a door for opening and closing the storage space; the ice maker is arranged on the door; the ice maker includes: a first tray formed of a metal material, fixed to the door, and formed with a plurality of first cells; a second tray formed of a material different from that of the first tray and having a plurality of second cells formed therein, the plurality of second cells opening and closing the first cells to form a space for making ice; and a motor unit for opening and closing the second tray. The first tray includes: a first portion in which the first unit is formed; and a second portion on which the motor unit is mounted. Therefore, even if a plurality of components operating for ice making and ice moving repeatedly operate, the combined state and the aligned state can be maintained.

Description

Technical Field

[0001] The utility model relates to a refrigerator. Background Art

[0002] Generally, a refrigerator is a household appliance that can store food at low temperature in an internal storage space shielded by a door. Furthermore, the refrigerator cools the storage space by using cold air generated by a freezing cycle, thereby preserving the stored food in a refrigerated or frozen state.

[0003] This refrigerator is in the trend of becoming advanced and becoming large-scale, and has various devices for improving the convenience of use. As a representative, the refrigerator can be provided with an ice maker for automatically making ice and storing ice.

[0004] Furthermore, ice made in an ice maker can have various shapes. In recent years, an ice maker that makes spherical ice has been developed.

[0005] However, in the case of an ice maker that makes spherical ice, it is difficult to maintain the connection and alignment between the tray and the plurality of components for making and transferring spherical ice, resulting in a problem of low ice making reliability. Utility Model Content

[0006] An object of the embodiments of the present invention is to provide a refrigerator capable of maintaining a combined state and an aligned state of a plurality of components constituting an ice maker.

[0007] An object of the embodiments of the present invention is to provide a refrigerator that ensures the quality of making spherical ice.

[0008] An object of the embodiments of the present invention is to provide a refrigerator with improved assembly and maintenance workability of an ice maker.

[0009] A refrigerator according to an embodiment of the present invention may include: a body forming a storage space; a door opening and closing the storage space; and an ice maker provided on the door; the ice maker includes: a first tray formed of a metal material, fixed to the door, and having a plurality of first units; a second tray formed of a material different from that of the first tray, and having a plurality of second units, the plurality of second units opening and closing the first units to form a space for making ice; and a motor unit used for the opening and closing action of the second tray; the first tray includes: a first part forming the first unit; and a second part for mounting the motor unit.

[0010] A cover is mounted on the first tray to shield at least a portion of the first portion. The cover may be separated from the first portion to form a cool air flow passage that guides cool air supplied for ice making through the first portion.

[0011] A tray mounting portion may be formed on the first tray, the tray mounting portion protruding toward the outside of the cover, and a screw fixed to the door is fastened to the tray mounting portion.

[0012] The door includes an ice-making chamber for accommodating the ice maker and a mounting member forming at least a portion of the ice-making chamber. A screw may penetrate the mounting member and be fastened to the tray mounting portion to fix the ice maker to the ice-making chamber.

[0013] The cover may be provided with a first ejector for moving the ice in the first unit; a plurality of unit extensions may be formed on the first tray, the plurality of unit extensions being connected to the interior of each first unit and extending toward the first ejector; the first ejector may pass through the unit extensions to move the ice in the first unit.

[0014] Ejector guides are formed on both sides of the cover, and the first ejector may include an ejector body moving along the ejector guides; and a plurality of ejector pins extending from the ejector body and inserted into the plurality of unit extensions.

[0015] The first tray includes a tray mounting portion, which is provided on the first portion so as to fix the first tray to the door; based on the first portion, the tray mounting portion may protrude in a direction intersecting with the second portion.

[0016] The second portion is located above or below the first portion, and the first tray may further include a third portion connecting the first portion and the second portion.

[0017] The first portion, the second portion, and the third portion may be integrally formed of the same material.

[0018] A drive shaft and a plurality of unit coupling protrusions are formed in the motor unit, the drive shaft is coupled to the second tray, and the plurality of unit coupling protrusions protrude in the same direction as the drive shaft; a coupling hole for inserting the unit coupling protrusion is formed in the second part; if the unit coupling protrusion is inserted into the coupling hole, the drive shaft can be connected to the second tray.

[0019] The second part includes: a top surface of the joint, which covers one side of the motor unit; and an edge of the joint, which extends downward along the edge of the top surface of the joint to support the periphery of the motor unit, and the screws passing through the motor unit can be fastened to the second part.

[0020] First connection portions protruding toward the second tray are formed on both sides of the first portion spaced apart from each other; the second tray may include a second connection portion protruding to be aligned with the first connection portion, and the rotational force of the motor unit is transmitted to the second connection portion.

[0021] The refrigerator may further include: a tray holder, both sides of the first tray being fastened by passing through the first connection portion, and being combined with the second connection portion to rotate together with the second connection portion; and a shaft connecting the tray holders on both sides so as to rotate together; the tray holder on one side of the tray holders on both sides can be connected to the drive shaft of the motor unit so as to rotate.

[0022] The second pallet includes: a pallet component formed of a soft material to form the second unit; and a pallet support member supporting the pallet component and having a second connection portion connected to the motor unit. An open support member hole can be formed in the pallet support member to expose the second unit.

[0023] A second ejector is installed on the first tray, and the second ejector connects with the second unit when the second tray rotates to move the ice in the second unit. The second ejector may include: a second ejector body, installed on the first tray, extending to be configured to the rotation radius of the second tray; and a plurality of second pins protruding from the second ejector body, which deform the plurality of second units to move the ice when the second tray rotates.

[0024] An ejector mounting portion extending downward and coupled to the second ejector body is formed on the first tray, and an ejector coupling portion for placing the ejector mounting portion is formed on the second ejector body. Screws are fastened to the ejector mounting portion, thereby coupling the ejector mounting portion and the ejector coupling portion.

[0025] The ejector mounting portion includes: a mounting portion top surface, formed with a threaded hole; a mounting portion extension surface, extending downward from the mounting portion top surface; and an extension protrusion, protruding from the mounting portion extension surface and extending up and down along the mounting portion extension surface. An ejector groove for inserting the extension protrusion can be formed at the ejector coupling portion.

[0026] In a state where the second ejector body is coupled to the ejector mounting portion, the second ejector body may be supported on an inner side surface of the door.

[0027] The door is a refrigerator door that covers a refrigerator compartment formed in the box body. An ice-making compartment that forms an insulating space is provided in the refrigerator door. The ice-making compartment may be provided with the ice maker and an ice pool that is provided below the ice maker and stores ice made in the ice maker.

[0028] A taking device for taking out the ice stored in the ice pool may be provided on the front side of the refrigerating chamber door.

[0029] On the other hand, the refrigerator of an embodiment of the present invention includes: a box body, which forms a storage space; a door, which opens and closes the storage space; and an ice maker, which is arranged on the door; the ice maker includes: a first tray, which is formed of a metal material, fixed to the door, and formed with a plurality of first units; a second tray, which is connected to the first tray by rotation, and formed with a plurality of second units, and the plurality of second units together with the first unit form a space for making ice; and a motor unit, which is used for the movement of the second tray; the second tray is rotatably coupled to the first tray, and the motor unit can be connected to the second tray when installed on the first tray so as to be able to transmit power.

[0030] The refrigerator of the proposed embodiment can have the following effects.

[0031] According to an embodiment of the present invention, the ice maker can have a structure in which the lid, motor unit, second tray, and first ejector are all mounted on the first tray, based on the first tray. Therefore, even when the multiple components that operate to make and remove ice repeatedly operate, they can remain connected and aligned.

[0032] Furthermore, the ice maker maintains the aligned state of its components, thereby maintaining the quality of spherical ice and ensuring that ice is produced in a spherical state. In particular, when the ice maker is mounted on a door, even if the door is repeatedly opened and closed, the multiple components can remain aligned in the first tray, thereby ensuring the quality of ice production.

[0033] Furthermore, the assembled ice maker can be fixedly mounted by the tray mounting portion of the first tray, thereby simplifying and facilitating the installation and detachment of the ice maker.

[0034] Furthermore, the first tray is advantageously formed of a metal material, and thus can provide sufficient rigidity to be able to mount a plurality of components of the ice maker and fix the ice maker. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a front view of a refrigerator according to the first embodiment of the present invention.

[0036] Figure 2 The figure schematically shows the path of the cold air flow between the door and the cabinet.

[0037] Figure 3FIG. 1 is a diagram showing the interior of the ice-making chamber of the door.

[0038] Figure 4 This is a diagram showing a state in which the mounting member, the ice maker, and the ice pool are separated from the door.

[0039] Figure 5 It is a perspective view of the ice maker viewed from one direction.

[0040] Figure 6 It is an exploded perspective view of the ice maker.

[0041] Figure 7 This is a perspective view of the first tray as viewed from above.

[0042] Figure 8 This is a perspective view of the first tray as viewed from below.

[0043] Figure 9 It is an exploded perspective view of the combined structure of the first tray and the cover.

[0044] Figure 10 4 is a top view of the first tray and the cover combined.

[0045] Figure 11 yes Figure 10 Sectional view 11-11.

[0046] Figure 12 This is a partial perspective view showing a state in which the motor unit is coupled to the first tray.

[0047] Figure 13 It is a front view showing the coupling structure of the first tray, the second tray, and the motor unit.

[0048] Figure 14 This is a perspective view of the ice maker viewed from below with the second tray open.

[0049] Figure 15 yes Figure 13 15-15 sectional view.

[0050] Figure 16 yes Figure 13 16-16 cross-sectional view.

[0051] Figure 17 2 is a perspective view of the second ejector of the ice maker.

[0052] Figure 18 is a cross-sectional view showing the combined structure of the first tray and the second ejector.

[0053] Figure 19 It is a three-dimensional view of the ice maker viewed from another direction.

[0054] Figure 20 It is an exploded perspective view showing another coupling structure based on the first tray of the ice maker.

[0055] Figure 21 It is a cross-sectional view showing a state in which water is supplied to the ice maker.

[0056] Figure 22 It is a cross-sectional view of the ice maker when it is in the ice making state.

[0057] Figure 23 It is a cross-sectional view of the ice maker when it is in the ice moving state.

[0058] Figure 24 It is an exploded perspective view showing the coupling structure of the first tray according to the second embodiment of the present invention.

[0059] Figure 25 It is an exploded perspective view showing the coupling structure of the first tray according to the third embodiment of the present invention.

[0060] Figure 26 It is an exploded perspective view showing the combined structure of the first tray and the motor unit according to the fourth embodiment of the present invention.

[0061] Figure 27 is a cross-sectional view showing a coupled state of the first tray and the motor unit.

[0062] Figure 28 It is a three-dimensional diagram of the first tray of the fifth embodiment of the present utility model.

[0063] Figure 29 It is a three-dimensional diagram of the first tray of the sixth embodiment of the present utility model.

[0064] Figure 30 1 is a diagram showing the flow of cold air in an ice maker according to a sixth embodiment of the present invention.

[0065] Figure 31 It is an exploded perspective view of the second tray of the seventh embodiment of the present utility model.

[0066] Figure 32 It is a cross-sectional view of an ice maker according to a seventh embodiment of the present invention. DETAILED DESCRIPTION

[0067] Below, with the attached Figure 1 The specific embodiments of the present invention will now be described in detail. However, the present invention is not limited to the embodiments that illustrate the concept of the present invention, and other embodiments that are further developed or encompassed within the scope of the present invention can be easily proposed by adding, changing, or deleting other components.

[0068] In addition, when describing the constituent elements of the embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. Such terms are only used to distinguish the constituent element from other constituent elements, and are not used to define the nature, order, or sequence of the corresponding constituent elements. When it is recorded that a constituent element is "connected," "coupled," or "in contact with" another constituent element, the constituent element may be directly connected to or in contact with the other constituent element, but it should be understood that another constituent element may also be "connected," "coupled," or "in contact with" each constituent element.

[0069] Before explaining, we first define the direction. In the embodiment of the present invention, we can Figure 1 The direction facing the front of the door visible in the image is defined as the front, the direction toward the refrigerator body based on the front of the door is defined as the rear, the direction toward the bottom of the refrigerator is defined as the bottom, and the direction away from the bottom is defined as the top. Furthermore, the direction toward the center of the door or refrigerator body can be defined as the inside, and the direction away from the center can be defined as the outside.

[0070] Figure 1 This is a front view of the refrigerator of the first embodiment of the present invention. Figure 2 The figure schematically shows the path of the cold air flow between the door and the cabinet.

[0071] As shown in the figures, a refrigerator 1 according to an embodiment of the present invention may include a body 10 forming a storage space and a door 20 for opening and closing the storage space.

[0072] The storage space of the housing 10 can be divided into upper and lower sections. The storage space can include a refrigerator compartment 11 and a freezer compartment 12 arranged one above the other. For example, the freezer compartment 12 can be a first storage compartment, and the freezer compartment 12 can be a second storage compartment. Furthermore, the freezer compartment 12 can be provided with an evaporator 14 for cooling the refrigerator compartment 11 and the freezer compartment 12.

[0073] The doors 20 may include a refrigerator door 21 for opening and closing the refrigerator compartment 11 and a freezer door 22 for opening and closing the freezer compartment 12. For example, the refrigerator door 21 may be a first door, and the freezer door 22 may be a second door.

[0074] The refrigerator door 21 may be a revolving door connected to the housing 10 via hinges 131 and 132, and may be configured to open and close the refrigerator compartment 11 by rotating. Furthermore, a pair of refrigerator doors 21 may be provided on the left and right sides, allowing the refrigerator compartment 11 to be opened and closed by the pair of refrigerator doors 21. Furthermore, the freezer door 22 may be configured to open and close the freezer compartment by drawing in and out in a drawer-like manner. Of course, the freezer door 22 may also be configured as a pair of doors that rotate on the left and right sides, similar to the refrigerator door 21.

[0075] On the other hand, an ice making chamber 23 may be formed in one of the refrigerator compartment doors 21. Furthermore, a dispenser 24 for taking out water or ice may be provided on the front side of the refrigerator compartment door 21 having the ice making chamber 23.

[0076] The ice-making chamber 23 is an insulated space that can be opened and closed by an ice-making chamber door 231. Furthermore, cold air from the evaporator 14 can be supplied to the interior of the ice-making chamber 23. To this end, a cabinet duct 15 can be provided within the cabinet 10, and an ice-making chamber duct 25 can be provided on the refrigerator door 21. When the refrigerator door 21 is closed, the cabinet duct 15 and the ice-making chamber duct 25 communicate with each other, allowing cold air from the evaporator 14 to be supplied to the ice-making chamber 23. Furthermore, the air heat-exchanged in the ice-making chamber 23 can be discharged into the freezer compartment 12.

[0077] On the other hand, the flow path of the cold air supplied to the ice making chamber 23 is not limited to the above example, and can be provided in various ways. As an example, the evaporator 14 can also be provided in the refrigerating chamber 11, and a flow path can be formed to supply the cold air from the evaporator disposed in the refrigerating chamber 11 to the ice making chamber 23.

[0078] Figure 3 : is a diagram showing the interior of the ice making chamber of the door. Figure 4 This is a diagram showing a state in which the mounting member, the ice maker, and the ice pool are separated from the door.

[0079] As shown in the figure, the ice-making chamber 23 can be formed by a recessed door liner 211 forming the back of the refrigerator compartment door 21. Furthermore, the back of the opening of the ice-making chamber 23 can be opened and closed by the ice-making chamber door 231. Furthermore, a cold air inlet 232 for inflow and a cold air outlet 233 for exhaust can be formed at the top and bottom of the ice-making chamber 23, respectively.

[0080] An ice maker 30 for making ice may be provided at the upper portion of the ice making chamber 23. Also, an ice pool 27 for storing ice removed from the ice maker 30 may be provided at the lower portion of the ice making chamber 23.

[0081] A mounting member 26 may be provided on the inner side of the ice making chamber 23. The ice maker 30 and the ice pool 27 may be fixedly mounted on the mounting member 26. The mounting member 26 may be formed to have a higher rigidity than the door liner 211.

[0082] The mounting member 26 may form a portion of the front and bottom surfaces of the ice-making chamber 23. Furthermore, the mounting member 26 may include an ice-maker mounting portion 261 for coupling with the ice-maker 30. The ice-maker mounting portion 261 may be formed at a position corresponding to the tray mounting portion 43 described below. For example, the ice-maker mounting portion 261 may be recessed in a shape corresponding to the tray mounting portion 43 so that it can be inserted into the tray mounting portion 43.

[0083] Then, the screw 262 is tightened from the front of the mounting member 26 through the ice maker mounting portion 261. The screw 262 is fastened to the tray mounting portion 43, so that the ice maker 30 can be mounted in the ice making chamber 23. At this time, since the screw 262 is tightened from the front of the mounting member 26, it is possible to fundamentally prevent the ice from entering the ice pool 27.

[0084] An ice chute 234 communicating with the taking device 24 may be provided on the bottom surface of the ice making chamber 23 . When the taking device 24 is operated, ice stored in the ice pool 27 may be discharged to the taking device 24 through the ice chute 234 .

[0085] On the other hand, in order to arrange the ice maker 30 and the ice pool 27 in the limited space of the ice making chamber 23 , the ice maker 30 may need to have a compact structure.

[0086] In particular, due to the structural characteristics of the ice making chamber 23 provided in the refrigerator door 21, the size of ice made in the ice maker 30 cannot be increased, and the structure has a structure for making a plurality of small-sized ices.

[0087] Therefore, the intervals between the units C for making a plurality of ices are narrowed, and the movement paths of the plurality of components constituting the ice maker 30 are also narrowed, so that precise movement between the components may be required.

[0088] Therefore, the plurality of components constituting the ice maker 30 may have an assembly structure that minimizes gaps, and may have a structure that prevents malfunction or unsatisfactory performance of each component caused by the gaps.

[0089] In order to ensure the amount of ice made, it is necessary to simplify the structure of the ice maker 30 except for the space for making ice. In addition, the structure for installing the ice maker 30 can be simplified and have a mounting structure that maintains a secure mounting state in the refrigerator door 21 that is repeatedly opened and closed.

[0090] Hereinafter, the ice maker 30 will be described in detail with reference to the accompanying drawings.

[0091] Figure 5 This is a three-dimensional view of the ice maker viewed from one direction. Figure 6 It is an exploded perspective view of the ice maker.

[0092] As shown, the ice maker 30 may include a first tray 40 and a second tray 50 for making a plurality of ice balls. Furthermore, the ice maker 30 may include a cover 60 for directing cool air toward the first tray 40. Furthermore, the ice maker 30 may include a motor unit 70 for rotating the second tray 50. Furthermore, the ice maker 30 may include a first ejector 80 for moving ice from the first tray 40 and a second ejector 90 for moving ice from the second tray 50.

[0093] Meanwhile, while this embodiment illustrates a configuration in which the first tray 40 and the second tray 50 are arranged vertically, the present invention is not limited thereto. Various configurations are also possible, such as those in which the second tray 50 can be rotated or reciprocated to produce and remove ice. For example, the first tray 40 can be fixed, while the second tray 50 moves in one direction to receive water and produce ice, and then moves in another direction to remove ice. In this case, the second tray 50 can also reciprocate linearly, for example, in a forward-backward or upward-downward direction.

[0094] The first tray 40 may include a plurality of first units 401. The first tray 40 may be referred to as an upper tray or a fixed tray. Furthermore, the first units 401 may be referred to as upper units.

[0095] The first tray 40 can be engaged with the second unit 512 of the second tray 50 to form a spherical unit C, thereby making spherical ice. As an example, the first unit 401 can have a hemispherical shape.

[0096] The first tray 40 is formed of a metal material with high rigidity so that it can be firmly fixed to the door 21. Of course, the first tray 40 can also be formed of other materials with excellent rigidity. In addition, the first tray 40 can be combined with a cover 60 on which a first ejector 80 is provided, a second tray 50, a motor unit 70 and a second ejector 90. That is, a plurality of components are combined with the first tray 40 as a reference, and each component remains aligned when the ice maker 30 is in operation. The first tray 40 can be formed of a metal material with high rigidity and no deformation. As an example, the first tray can be formed by die-casting of an aluminum material. Therefore, other components are assembled with the first tray 40 as the center, so that the operation reliability of the plurality of components combined with the first tray can be ensured when the plurality of components combined with the first tray are in operation.

[0097] In addition, by assembling a plurality of components based on the first tray 40 , the structure of the entire ice maker 30 can be simplified, and the operational reliability of each component can be improved by simplifying the operational path.

[0098] Specifically, when there is no reference structure when assembling the components of the ice maker, the number of multiple components for connecting them increases, which causes problems such as increased operation time gaps and accumulated gaps.

[0099] However, the structure of directly or indirectly connecting the motor unit 70 and the second tray 50, which operate with the highly rigid first tray 40 as a reference, reduces the number of overall components and simplifies the coupling structure, thereby reducing the cumulative gap and ensuring operational reliability. For example, when the second tray 50 rotates to remove ice, the gap between the second tray 50 is minimized, allowing the second tray 50 to rotate by the designed amount. This ensures the deformation caused by contact with the second ejector 90 and ensures reliable ice removal.

[0100] In particular, the first tray 40 is connected to the second tray 50 so that the motor unit 70 can rotate the second tray 50 , thereby simplifying the power transmission structure and further improving the operation reliability.

[0101] For example, the first tray 40 may be formed with a tray mounting portion 431. Furthermore, the first tray 40 may be formed with a motor unit mounting portion 44 for mounting the motor unit 70. Furthermore, the first tray 40 may be formed with a first connecting portion 411 for connecting to the second tray 50. Furthermore, the first tray 40 may be mounted with a second ejector 90.

[0102] The motor unit 70 is connected to the full ice sensor 71 to activate the full ice sensor 71. The full ice sensor 71 can determine whether the ice pool 27 is full of ice by contact when the ice stored in the ice pool 27 is above a set height.

[0103] Furthermore, tray holders 72 may be provided on both sides of the first tray 40 . The tray holders 72 may transmit the rotational force of the motor unit 70 to the second tray 50 .

[0104] The tray holder 72 may have a protruding holder connection portion 721. The holder connection portion 721 may extend through the first connection portion 411 and be coupled to the second connection portion 522. For example, the holder connection portion 721 may extend through a bushing 74 mounted on the first connection portion 411 and be rotatably mounted on the first connection portion 411. Furthermore, a shaft 73 may be inserted into the holder connection portions 721 on both sides of the tray holder 72, arranged in a direction facing each other. The two tray holders 72 may be connected by the shaft 73.

[0105] The tray holders 72 on either side of the tray holders 72 located closer to the motor unit 70 may be formed with motor connection portions 722 connected to the drive shaft 701 of the motor unit 70. Therefore, when the motor unit 70 is activated, the tray holders 72 connected to the motor unit 70 rotate, allowing both tray holders 72 to rotate simultaneously via the shaft 73. This allows rotational force to be transmitted simultaneously to both sides of the second tray 50, allowing the second tray 50 to rotate about the shaft 73.

[0106] The tray holder 72 may include a holder arm 723 extending away from the rotation center of the tray holder 72. Furthermore, an elastic member 75 may be connected to the end of the holder arm 723. For example, the elastic member 75 may be a spring. One end of the elastic member 75 may be fixed to the holder arm 723, and the other end may be fixed to the tray support 52. Furthermore, the elastic member 75 may provide an elastic force that rotates the second tray 50 toward closing, thereby further tightening the first tray 40 and the second tray 50 during ice making.

[0107] A heater 48 and a heater cover 49 may be disposed on the top surface of the first tray 40. The heater 48 may be operated to remove ice and heat the first tray 40. The heater 48 may be disposed along the perimeter of the plurality of first cells 401. The heater cover 49 may shield and secure the heater 48.

[0108] The cover 60 may be coupled to the first tray 40 above the first tray 40. The cover 60 may have a structure capable of guiding cool air and water to the first tray 40. The cover 60 may also guide the first ejector 80 to move up and down.

[0109] The first ejector 80 may include an ejector body 81 extending toward both sides of the cover 60 and a first pin 82 extending downward from the ejector body 81. The first ejector 80 may be guided by both sides of the cover 60 to move up and down.

[0110] Furthermore, connecting rods 76 connected to both sides of the second tray 50 may be combined on both sides of the ejector body 81. The first ejector 80 may be moved up and down in conjunction with the rotation of the second tray 50.

[0111] A plurality of the first pins 82 may be formed at positions corresponding to the first unit 401. Furthermore, the first pins 82 may push the ice inside the first unit 401 to separate the ice through the unit extension portion 422 described below.

[0112] The second tray 50 may include a tray member 51 having a plurality of second cells 512 and a tray support 52 supporting the tray member 51. The second tray 50 may also include a tray cover 53. The second tray 50 may be referred to as a second tray assembly, a lower tray, or a mobile tray.

[0113] Specifically, the tray member 51 may be formed with a plurality of second units 512. The second units 512 may be referred to as lower units. The second units 512 may be formed at positions corresponding to the first units 401 in the same number as the first units 401.

[0114] The tray member 51 may include a second tray body 511 formed in a planar shape. Furthermore, the second cell 512 may be open on the top surface of the second tray body 511. Furthermore, a lower wall 513 may extend upward along the outer contour of the second cell 512. The lower wall 513 may protrude upward from the top surface of the second tray body 511. The lower wall 513 may prevent water filled in the second cell 512 from overflowing outside the second tray 50. Furthermore, the second tray body 511 may be formed in a planar shape and protrude further outward than the lower wall 513. The periphery of the second tray body 511 may be fixed between the tray support 52 and the tray cover 53.

[0115] Furthermore, the tray member 51 can be formed of a soft material. For example, the tray member 51 can be formed of a silicone material. Therefore, the tray member 51 can be tightly attached to the first tray 40 to form an airtight seal therebetween, and can be deformed when contacting the second ejector 90 to remove ice.

[0116] The tray support 52 can support the second tray 50 from below. Furthermore, to reinforce the soft tray member 51, it can be formed of metal or plastic. The tray support 52 can be formed with a plurality of support holes 521. These support holes 521 can be configured to allow the downwardly protruding second unit 512 to pass through. That is, when the tray member 51 and tray support 52 are coupled, the lower portion of the second unit 512 can protrude downward through the support holes 521.

[0117] The tray support 52 may have second connecting portions 522 formed on both sides thereof, into which the holder connecting portion 721 may be inserted. The inner side surfaces of the second connecting portions 522 and the holder connecting portions 721 may be keyed together, allowing the tray support 52 to rotate when the tray holder 72 rotates. Furthermore, the tray member 51 secured to the tray support 52 may rotate together.

[0118] Furthermore, support protrusions 523 may be formed on the left and right sides of the tray support 52. The support protrusions 523 may be coupled to the lower end of the connecting rod 76 so as to be rotatable.

[0119] A tray cover 53 may be provided on the top surface of the tray member 51. The tray cover 53 may be formed along the edge of the tray member 51. Furthermore, a cover opening 531 may be formed in the tray cover 53 for the upper end of the tray member 51 to pass through. The cover opening 531 may be formed along the periphery of the second unit 512. Furthermore, the lower wall 513 may protrude upward through the cover opening 531. The lower wall 513 and the top surface of the opening of the second unit 512 may be exposed through the cover opening 531, and may connect with the first unit 401 when the tray member 51 is closed to form the spherical unit C.

[0120] Furthermore, the tray cover 53 may be formed with a cover coupling portion 532 extending downward. The cover coupling portion 532 may be coupled to the tray support 52. When the tray cover 53 and the tray support 52 are coupled, the tray member 51 may be fixedly disposed between the tray cover 53 and the tray support 52. Therefore, the tray cover 53, the tray support 52, and the tray member 51 may form a single assembly when coupled and rotate together.

[0121] A second ejector 90 may be provided below the first tray 40 and the second tray 50. The second ejector 90 may be coupled to the first tray 40. The second ejector 90 may include an ejector body 91 coupled to the first tray 40 and a plurality of second pins 92 protruding from the ejector body 91.

[0122] Hereinafter, each component of the ice maker 30 will be described in detail with reference to the accompanying drawings.

[0123] Figure 7 is a perspective view of the first tray viewed from above. Figure 8 This is a perspective view of the first tray as viewed from below.

[0124] As shown in the figure, the first tray 40 may include a first portion 41 formed with a plurality of first units 401. The first portion 41 may be formed in a plate shape and may be referred to as a first region or a tray portion.

[0125] The first cells 401 can be formed in a hemispherical shape with an open bottom. The first cells 401 can be arranged in two rows along the front-to-back direction. The first cells of the first row and the second row can be arranged in a staggered direction, and the cell forming portions 42 of the first cells 401 of the first row and the first cells 401 of the second row can be connected to each other. Therefore, by minimizing the front-to-back width of the first tray 40, the ice maker 30 can be compactly arranged within the ice making chamber 23.

[0126] The first portion 41 may be formed with a plurality of cell-forming portions 42. The cell-forming portions 42 may internally form the first cells 401. Furthermore, the upper portions of the cell-forming portions 42 may be recessed from the first portion 41 to correspond to the shape of the first cells 401. Thus, the cell-forming portions 42 may maintain a uniform thickness throughout, allowing cool air to be evenly distributed across the entire surface of the first cells 401.

[0127] The lower end of the unit forming portion 42 may protrude below the first portion 41. The lower portion of the unit forming portion 42 that protrudes below the first portion 41 may be referred to as an upper wall 421. The upper wall 421 may be accommodated inside the lower wall 513 formed on the second tray 50 when the second tray 50 rotates. Furthermore, the upper wall 421 and the lower wall 513 may be connected to each other.

[0128] The unit extension portion 422 may extend upward from the upper end of the first unit 401. The unit extension portion 422 may be located above the first portion 41. The unit extension portion 422 may form a passage for allowing the first pin 82 to enter and exit.

[0129] Furthermore, when a large amount of water is supplied to the cell C, the water inside the cell C freezes in the cell extension 422, thereby preventing the first tray 40 and the second tray 50 from opening due to the volume expansion of the ice. The cell extension 422 may also be referred to as a buffer.

[0130] Furthermore, the water for supply may be supplied through one of the plurality of unit extensions 422. Therefore, the unit extension 422 may further include a coupling portion 423 for connecting to the water supply portion 64.

[0131] A heater groove 413 recessed along the edge of the plurality of unit forming portions 42 may be formed in the first portion 41. The heater groove 413 may be formed along the outer contour of the plurality of first units 401. Furthermore, the heater 48 may be disposed along the heater groove 413. When installed in the heater groove 413, the heater 48 may be connected to the upper portion of the unit forming portion 42 and pass through the region of the plurality of first units 401. Therefore, when the heater 48 is in operation, the heat of the heater 48 may be uniformly transferred to the entire first unit 401, thereby heating the ice formed inside the first unit 401 and making it easier to move the ice.

[0132] Furthermore, a sensor slot 414 may be formed on the top surface of the first portion 41. The temperature sensor 77 may be inserted into the sensor slot 414 while being attached to the cover 60. Furthermore, the temperature sensor 77 may be connected to the first tray 40 within the sensor slot 414, thereby measuring the temperature at which ice making is completed.

[0133] Furthermore, a terminal groove 415 may be formed on the top surface of the first portion 41. The terminal groove 415 may accommodate the terminal 78 connecting the heater 48 and the wire 781. Therefore, the heater 48 and the terminal 78 provided on the first portion 41 do not protrude from the tray body 41, thereby not obstructing the flow of cold air.

[0134] Furthermore, a tray rib 416 may be formed on the top surface of the first portion 41. The tray rib 416 is formed along a position corresponding to the lower end of the cover 60 so that it can contact the lower periphery of the cover 60 when the cover 60 is installed. Furthermore, a recessed wire guide 417 may be formed in the tray rib 416 to allow the wires 781 connected to the heater 48 to pass through. The wires 781 can be guided to the outside of the cover 60 through the wire guide 417.

[0135] Furthermore, fastening bosses 418 for fastening by screws 616 passing through the cover 60 may be formed on both left and right sides of the top surface of the first portion 41. The cover may be fixed to the first tray 40 using the fastening bosses 418.

[0136] The first tray 40 may be formed with the tray mounting portion 43. The tray mounting portion 43 may be formed at a front end of the first portion 41. The tray mounting portion 43 may protrude further outward than the cover 60.

[0137] Specifically, the tray mounting portion 43 may include a first extension portion 431 extending forward, and a second extension portion 432 extending upward from the front end of the first extension portion 431. The second extension portion 432 may be coupled to the ice maker mounting portion 261 of the mounting member 26. Furthermore, the second extension portion 432 may include a threaded hole 433 for fastening a screw 262 passing through the ice maker mounting portion 261. The second extension portion 432 may be formed in a shape corresponding to the recessed shape of the ice maker mounting portion 261.

[0138] A plurality of tray mounting portions 43 may be provided at intervals. For example, the tray mounting portions 43 may be formed at the left and right ends of the first portion 41. Thus, the ice maker 30 can be more securely fixed to the door 21. In particular, the various components of the ice maker 30 can remain securely mounted without play due to rotational torque generated during rotation.

[0139] The first tray 40 may be mounted with the cover 60 on which the first ejector 80 is mounted, the second tray 50, the motor unit 70, and the second ejector 90. With these components coupled to the first tray 40, the entire ice maker 30 may be mounted to or detached from the door 21 at once by tightening or releasing the screws 262.

[0140] The first tray 40 may be formed with an ejector mounting portion 45 for coupling with the second ejector 90. The ejector mounting portion 45 may be formed at the front end of the first portion 41. A plurality of ejector mounting portions 45 may be spaced apart and arranged along the front end of the first portion 41. Furthermore, the ejector mounting portion 45 may be arranged between the tray mounting portions 43. Furthermore, the ejector mounting portion 45 may be integrally connected to the tray mounting portion 43. Therefore, the rigidity of the tray mounting portion 43 and the ejector mounting portion 45 may be further enhanced.

[0141] The ejector mounting portion 45 may be seated on the ejector coupling portion 93 formed on the second ejector 90 , and a screw 932 passing through the ejector mounting portion 45 may be fastened to the ejector coupling portion 93 .

[0142] The ejector mounting portion 45 may include a mounting portion top surface 451 extending rearward and a mounting portion extension surface 455 extending downward. Furthermore, a threaded hole 452 for tightening the screw 932 may be formed on the mounting portion top surface 451. Thus, the screw 932 is tightened downward from above to the second ejector 90, thereby preventing the screw 932 from loosening and entering the ice pool 27.

[0143] The mounting portion extension surface 455 may include a first extension surface 454 and a second extension surface 453. Specifically, the first extension surface 454 may extend downward from the front end of the first portion 41. Furthermore, the mounting portion top surface 451 may be formed to protrude forward from the first extension surface 454. In this case, the first extension surface 454 may extend further downward than the mounting portion top surface 451.

[0144] A fixing protrusion 456 extending vertically may be formed on the first extension surface 454. The fixing protrusion 456 may protrude toward the second extension surface 453 and extend vertically along the first extension surface 454. Furthermore, the fixing protrusion 456 may be inserted into the fixing groove 912 of the second ejector 90. Furthermore, a reinforcing rib 457 is formed on the back surface of the second extension surface 453. The reinforcing rib 457 may connect the bottom surface of the first portion 41 and the back surface of the second extension surface 453. A plurality of reinforcing ribs 457 may be formed.

[0145] A second extension surface 453 extending downward may be formed at the front end of the mounting portion top surface 451. The second extension surface 453 may extend in a direction opposite to the tray mounting portion 43. Furthermore, the front surface of the second extension portion 432 may contact the mounting member 26. Therefore, when the ice maker 30 is installed, the second extension portion 432 and the tray mounting portion 43 can be supported on the door 21 together, thereby maintaining a more stable support and installation state.

[0146] On the other hand, the first connecting portion 411 may be formed on the bottom surface of the first portion 41 . The first connecting portion 411 is located on the left and right sides of the first portion 41 and may be formed at a position further outward than the tray mounting portion 43 and the ejector mounting portion 45 .

[0147] The first connection portion 411 may be formed at a position corresponding to the second connection portion 522. The first connection portion 411 may be formed with an upper opening 4111 for the holder connection portion 721 to pass through. An upper groove 4112 may be formed on one side of the upper opening 4111.

[0148] The boss 74 is inserted into the upper opening 4111, and the boss protrusion protruding from the outer surface of the boss 74 is inserted into the upper groove 4112, thereby securing the boss 74 to the inner side of the upper opening 4111. Furthermore, the retaining member connecting portion 721 can pass through the boss 74. The retaining member connecting portion 721 can be configured to penetrate the inner side of the boss 74 and be rotatable. Therefore, the retaining member connecting portion 721 can freely rotate about the first connecting portion 411.

[0149] The first connection portion 411 may be located further rearward than the first unit 401. That is, the ice maker 30 may have a structure in which the unit C is opened and closed when the second tray 50 rotates around the first connection portion 411 and the second connection portion 522.

[0150] The first tray 40 may further include a motor unit mounting portion 44. That is, the motor unit mounting portion 44 may be integrally formed with the first tray 40. The motor unit mounting portion 44 may protrude laterally from one end of either side of the first portion 41.

[0151] The motor unit mounting portion 44 fixes the motor unit 70 to the first tray 40 . The motor unit 70 can transmit power to the second tray 50 while being mounted on the motor unit mounting portion 44 .

[0152] The motor unit mounting portion 44 may include a second portion 441 coupled to the motor unit 70 and a third portion 442 connecting the first portion 41 and the second portion 441. The second portion 441 may be referred to as a second region or a unit coupling portion 441. The third portion 442 may be referred to as a third region or a unit extension portion 442.

[0153] As an example, the first tray 40 may further include the second portion 441. Furthermore, the first tray 40 may further include the third portion 442. As another example, the curved third portion 442 may be omitted, and the second portion 441 may be directly connected to the first portion 41.

[0154] The second portion 441 can be coupled to the upper portion of the motor unit 70 and thus can be located above the top surface of the first portion 41. The second portion 441 can include a coupling top surface 443 and a coupling edge 444. The coupling top surface 443 can be formed to a size corresponding to the top surface of the motor unit 70 and can be positioned on the top surface of the motor unit 70.

[0155] The joint edge 444 may extend downward along at least a portion of the outer end of the joint top surface 443. For example, the joint edge 444 may include a first edge portion 4441 formed along the front and rear ends of the joint edge 444; and a second edge portion 4442 formed along the side ends of the joint edge 444 and connected to the end of the first edge portion 4441. The second edge portion 4442 may be connected to the third portion 442.

[0156] The motor unit 70 is inserted into the second portion 441 from the side and can be respectively connected with the joint top surface 443 and the joint edge 444. Therefore, when the motor unit 70 is installed, it can be guided to the correct position by the joint top surface 443 and the joint edge 444.

[0157] The pair of ribs on the second edge portion 4442 can be spaced apart from each other. Furthermore, the side of the pair of ribs away from the third portion 442 can be in contact with the side surface of the motor unit 70. Furthermore, the third portion 442 can be fully connected to the pair of ribs. This can enhance the rigidity of the second portion 441 connected to the third portion 442, and further strengthen the combined rigidity of the second portion 441 and the third portion 442.

[0158] The motor unit mounting portion 44 may be formed with a coupling hole 445 for coupling with the motor unit 70. The coupling hole 445 may be formed through the second edge portion 4442. The coupling hole 445 may be formed at a corner portion between the second edge portion 4442 and the coupling portion top surface 443. There may be a plurality of coupling holes 445 spaced apart from each other, and the coupling holes 445 may be formed at positions corresponding to the coupling protrusions 702 formed on the motor unit 70.

[0159] Furthermore, a mounting groove 446 may be formed in the motor unit mounting portion 44. The mounting groove 446 may be formed at the end of the coupling portion top surface 443 and may be recessed to receive the fastening protrusion 703 of the motor unit 70. Furthermore, a screw fastening portion 4461 may be formed in the motor unit mounting portion 44. The screw fastening portion 4461 may be formed to protrude from the mounting groove 446.

[0160] On the other hand, the third portion 442 can be formed by continuous bending so as to be able to connect the side end of the first portion 41 and the side end of the second portion 441. The third portion 442 can be connected to the side of the first portion 41 and the second portion 441 arranged above. In addition, the third portion 442 can be formed with joint reinforcement ribs 4421 extending in a cross direction along the third portion 442 on the top and bottom surfaces. Therefore, the rigidity of the third portion 442 can be strengthened, deformation of the motor unit mounting portion 44 can be prevented, and the mounting position of the motor unit 70 can be maintained even under repeated operations of the ice maker 30, and power transmission performance can be ensured.

[0161] Hereinafter, with reference to the accompanying drawings, various components combined with the first tray 40 will be described in further detail.

[0162] Figure 9 is an exploded perspective view of the combination structure of the first tray and the cover. Figure 10 is a top view of the first tray and the cover combined. And, Figure 11 yes Figure 10 Sectional view 11-11.

[0163] As shown in the drawings, the cover 60 may be installed on the top surface of the first tray 40. The cover 60 may form an upper portion of the ice maker 30 in a state of being combined with the first tray 40.

[0164] The cover 60 may include a cold air guide 62 that guides cold air to the first tray 40. The cold air guide 62 may include a guide surface 621, which may form a portion of the cover 60 and guide the cold air forward. The guide surface 621 may have a slope that decreases as it approaches the first unit 401. Furthermore, a guide edge 622 may be formed along the periphery of the guide surface 621 and may connect with the top surface of the first portion 41 to form a cold air flow channel 600.

[0165] Furthermore, the cold air guide 62 may include a duct portion 63 protruding laterally. The duct portion 63 may extend to communicate with the cold air flow inlet 232. When the ice maker 30 is installed, the duct portion 63 is connected to a side surface of the ice making chamber 23 where the cold air flow inlet 232 is formed.

[0166] Therefore, the cold air supplied through the cold air inlet 232 flows into the inner side of the cold air guide 62 via the duct portion 63, flows rearward along the guide surface 621, and passes through the cold air flow channel 600. The cold air flowing rearward through the guide surface 621 cools the first tray 40 while passing through the top surface of the first tray 40.

[0167] Specifically, the cover 60 may include a cover portion 61 spaced apart from the top surface of the first tray 40. The cover portion 61 may be located above the first unit 401 and spaced apart from the top surface of the first tray 40 to form the cool air flow channel 600.

[0168] Furthermore, the cover portion 61 may be formed with a plurality of cover holes 611. The unit extension portion 422 may be inserted into the cover holes 611. The unit extension portion 422 may be arranged to pass through the cold air flow path 600 through which cold air flows. Thus, the unit extension portion 422 may be cooled by contact with the cold air passing through the cold air flow path. Heat from the cooled unit extension portion 422 may be conducted and transferred to the interior of the first unit 401, thereby uniformly cooling the plurality of first units 401.

[0169] The cold air flowing through the cold air flow path 600 passes over the outer surface of the cell extension 422 and the top surface of the cell forming portion 42. The first tray 40 is formed of a metal material, so the cold air contacting the upper portion of the first cell 401 and the cell extension 422 can cool the plurality of first cells 401. Therefore, the water inside the first cells 401 can be evenly cooled, and ice can be made at a uniform rate in each of the cells C.

[0170] In particular, the first tray 40 is formed of a metal material with excellent thermal conductivity, such as aluminum, and effectively transfers heat to each unit C for making ice, thereby increasing the amount of ice made.

[0171] Furthermore, the first tray 40 can also be cooled by cold air before the ice-making operation begins. Due to the material properties of the first tray 40, the cold air can be used to cool the first tray 40, thereby improving preheating efficiency. This can further improve ice-making efficiency during the water supply and ice-making operations.

[0172] Furthermore, due to conduction, heat can be transferred throughout the first tray 40, uniformly transferring heat to the plurality of cells C. Consequently, variations in ice-making speeds among the plurality of cells C can be reduced. Furthermore, the shape and size of ice within the cells C can be made uniform, particularly reducing the height differences of ice protruding from the cell extensions 422.

[0173] A temperature sensor 77 for sensing the temperature of the first tray 40 may be installed on the cover 61 .

[0174] Furthermore, the cover 61 may be formed with a threaded hole 615 for fastening a screw 616. The screw 616 may penetrate the threaded hole 615 from above and be fastened to the fastening boss 418 of the first tray 40, thereby combining the cover 60 and the first tray 40.

[0175] The cover 60 may be provided with a water supply portion 64. The water supply portion 64 is used to supply water to the unit C and may receive water supplied from a water supply pipe 640 protruding from the inner side of the ice making chamber 23. A portion of the water supply portion 64 may be connected to one side of the unit extension portion 422, and water may be supplied to the unit extension portion 422 through a water supply port 644 formed in the water supply portion 64.

[0176] On the other hand, a cover fastening portion 623 extending downward may be formed at the front end of the cover portion 61. The cover fastening portion 623 may extend through the tray coupling opening 439 of the first tray 40. The tray coupling opening 439 may be formed between the tray mounting portion 43 and the ejector mounting portion 45. Furthermore, the extended end of the cover fastening portion 623 is formed into a hook shape so as to be latched onto the first tray 40. Therefore, due to the cover fastening portion 623, the cover 60 and the first tray 40 have a primary coupling structure, and may also have a secondary coupling structure by being fastened with screws tightened in the vertical direction.

[0177] On the other hand, the cover portion 61 may have upwardly extending cover side surfaces 65 and a cover back surface 66 formed on both left and right side ends and the rear end. The cover side surfaces 65 and the cover back surface 66 may be referred to as cover edges. The first ejector 80 may be disposed within the space formed by the cover side surfaces 65 and the cover back surface 66.

[0178] The lid side surface 65 may be formed with ejector guides 650 to guide the movement of the first ejector 80. The ejector guides 650 may be formed on both the left and right sides of the lid 60. The ejector guides 650 may be formed as grooves cut vertically through the lid side surface 65. Furthermore, both ends of the ejector body 81 may pass through the ejector guides 650. Thus, the first ejector 80 may move vertically along the ejector guides 650.

[0179] When the first ejector 80 is installed through the ejector guide 650, both ends of the ejector body 81 may protrude further outward than the ejector guide 650 and may be connected to the upper end of the connecting rod 76. Furthermore, the lower end of the connecting rod 76 may be rotatably connected to the tray support 52. Therefore, as the second tray 50 rotates, the connecting rod 76 may move vertically, thereby causing the first ejector 80 to move vertically.

[0180] Furthermore, a cover outlet 661 may be formed at the lower end of the cover back 66. The cover outlet 661 may communicate with the space between the cover 61 and the top surface of the first tray 40. Therefore, cold air flowing between the cover 61 and the top surface of the first tray 40 may be discharged rearward through the cover outlet 661.

[0181] The cold air discharged through the cover outlet 661 passes through the ice pool 27 in the ice making chamber 23 and is directed toward the freezing chamber 12 through the cold air outlet 233 .

[0182] Figure 12 : is a partial perspective view showing the state in which the motor unit is combined with the first tray. Figure 13 It is a front view showing the coupling structure of the first tray, the second tray, and the motor unit.

[0183] As shown in the figure, the motor unit 70 is implemented by a combination of multiple gears and a motor. Furthermore, a drive shaft 701 protruding from the motor unit 70 can be connected to the second tray 50 via the tray holder 72. Therefore, the motor unit 70 allows the second tray 50 to rotate forward and reverse at a set angle.

[0184] The motor unit 70 is formed with a coupling protrusion 702 and a fastening protrusion 703 so that it can be mounted on the motor unit mounting portion 44. Specifically, the unit coupling protrusion 702 can be inserted into the coupling hole 445. The coupling protrusion 702 can be formed in pairs on the left and right sides. If the coupling protrusion 702 is moved laterally while being inserted into the coupling hole 445, the top surface of the motor unit 70 contacts the top surface 443 of the coupling portion, and the edge 444 of the coupling portion contacts the peripheral surface of the motor unit 70, thereby supporting the motor unit 70.

[0185] Furthermore, a fastening protrusion 703 may be protruded from the top surface of the motor unit 70. Furthermore, the fastening protrusion 703 may be inserted into the mounting groove 446 and engage with the screw fastening portion 4461. In this state, the screw 704 may pass through the fastening protrusion 703 and be fastened to the screw fastening portion 4461, thereby more securely fixing the motor unit 70.

[0186] On the other hand, when the motor unit 70 is mounted on the motor unit mounting portion 44 , the driving shaft 701 of the motor unit 70 may be connected to the tray holder 72 .

[0187] The protruding direction of the coupling protrusion 702 and the protruding direction of the drive shaft 701 can extend in the same direction. Therefore, if the motor unit 70 is moved sideways to be installed in the motor unit mounting portion 44, the coupling protrusion 702 and the coupling hole 445 can be coupled, and the drive shaft 701 and the tray holder 72 can be coupled simultaneously. In addition, the screw 704 is tightened in the same direction as the insertion direction of the motor unit 70. Therefore, when the screw 704 is tightened, the coupling protrusion 702 and the coupling hole 445, and the coupling of the drive shaft 701 and the tray holder 72 can be more firmly achieved.

[0188] Figure 14 This is a perspective view of the ice maker with the second tray open, viewed from below. Figure 15 yes Figure 13 15-15 sectional view. And, Figure 16 yes Figure 13 16-16 cross-sectional view.

[0189] like Figures 13 to 18 As shown, the driving shaft 701 of the motor unit 70 is connected to the motor connecting portion 722 of the tray holder 72 on both sides, which is close to the tray holder 72 on one side, so as to transmit power to the tray holder 72 and the second tray 50.

[0190] The second tray 50 is connected to the first tray 40 via a tray holder 72 and is rotatable about the shaft 73. Specifically, the first tray 40 remains stationary, and as the motor unit 70 is driven, the second tray 50 rotates to open and close the unit C, thereby achieving ice making and ice removal operations.

[0191] Specifically, the second connection portion 522 may be aligned with the first connection portion 411 and may be positioned further outward than the first connection portion 411. In this case, at least a portion of the boss 74 mounted on the first connection portion 411 may protrude further outward than the first connection portion 411 and may be in contact with the second connection portion 522.

[0192] The boss 74 can be made of a wear-resistant, lubricating material such as engineering plastic. Therefore, the boss 74 supports both the second connecting portion 522 and the first connecting portion 411, ensuring that the second tray 50 remains accurately positioned and rotates without wandering. Furthermore, the retaining member connecting portion 721, which extends through the boss 74, can smoothly rotate.

[0193] Furthermore, the tray holders 72 disposed on both sides of the second tray 50 enable the second tray 50 to rotate. Specifically, the holder connection portion 721 of the tray holder 72 can pass through the second connection portion 522 and engage with the second connection portion 522, thereby rotating together with the second tray 50. Furthermore, the holder connection portion 721 can be inserted into the first connection portion 411, that is, the inner side of the boss 74, through the second connection portion 522.

[0194] Furthermore, both ends of the shaft 73 can be respectively inserted into the holder connecting portions 721 formed on both sides of the tray holder 72. The shaft 73 can have a polygonal cross-section. Therefore, the tray holders 72 on both sides connected by the shaft 73 can rotate simultaneously without falling off.

[0195] On the other hand, a connection portion protrusion 7211 for transmitting power may be formed on the outer surface of the holder connection portion 721. The connection portion protrusion 7211 may be formed on both sides facing each other with the center of the holder connection portion 721 as a reference.

[0196] Furthermore, a lower hole 5221 may be formed on the inner side of the second connecting portion 522, into which the connecting portion protrusion 7211 may be inserted. A connecting groove 5222 may be formed on the inner side of the lower hole 5221 for the connecting portion protrusion 7211 to be inserted. Therefore, when the retainer connecting portion 721 rotates due to the rotation of the drive shaft 701, the second tray 50 may rotate together due to the engagement between the connecting portion protrusion 7211 and the connecting groove 5222.

[0197] On the other hand, the connection groove 5222 can be formed to be slightly larger than the connection portion protrusion 7211. Therefore, when the second tray 50 is closed, the elastic force of the elastic member 75 allows the second tray 50 to further rotate in the direction in which it is pressed and closed. At this time, the elastic deformation of the tray member 51 allows the second tray 50 to further rotate in the closing direction.

[0198] Figure 17 is a perspective view of the second ejector of the ice maker. Figure 18 is a cross-sectional view showing the combined structure of the first tray and the second ejector.

[0199] As shown in the figure, the second ejector 90 may include a second ejector body 91 coupled to the first tray and a second pin 92 protruding from the second ejector body 91. The upper end of the second ejector body 91 may be coupled to the first tray 40. Furthermore, the second ejector body 91 may extend downward from the lowest end of the rotation radius of the second tray 50.

[0200] The front of the second ejector body 91 can be supported by the inner side of the ice making chamber 23 or the mounting member 26. The front of the second ejector body 91 is formed with a plurality of main ribs 912 that cross each other. Due to the main ribs 912, the rigidity of the second ejector body 91 can be enhanced.

[0201] Furthermore, the top surface of the second ejector body 90 can be coupled to the ejector mounting portion 45. An ejector coupling portion 93 coupled to the ejector mounting portion 45 can be formed on the second ejector body 91. The ejector coupling portion 93 can be formed on the front and top surfaces of the second ejector body 91. Furthermore, the ejector coupling portion 93 can be spaced apart from the left and right sides of the second ejector body 91. Furthermore, a threaded hole 931 for fastening a screw 932 can be formed on the top surface of the ejector coupling portion 93.

[0202] The upper end of the second ejector body 91, on which the ejector coupling portion 93 is formed, can be inserted into and fixed to the ejector mounting portion 45. Specifically, the front and back surfaces of the ejector coupling portion 93 can be inserted between the first extension surface 454 and the second extension surface 453. Furthermore, the top surface of the ejector coupling portion 93 can be in contact with the mounting portion top surface 451. Therefore, the first extension surface 454, the second extension surface 453, and the mounting portion top surface 451 can be in contact with the respective surfaces of the upper portion of the second ejector 90 and fixed.

[0203] On the other hand, a fixing groove 912 may be formed on the back side of the ejector coupling portion 93. The fixing groove 912 may extend downward from the upper end of the second ejector 90. Furthermore, when the second ejector 90 moves upward and engages with the ejector mounting portion 45, the fixing protrusion 456 protruding from the first extension surface 454 may be inserted into the fixing groove 912.

[0204] Furthermore, the screw 932 may be fastened to the top surface of the ejector coupling portion 93. The screw 932 is fastened to the threaded hole 931, thereby coupling the second ejector 90 to the ejector mounting portion 45.

[0205] Therefore, the fixing protrusion 456 is inserted into the fixing groove 912, thereby preventing the second ejector 90 from moving left and right. When installing the second ejector 90, it is guided into the correct position, thereby aligning the plurality of threaded holes 452 and 931. Furthermore, due to the tightening of the screw 932, the second ejector 90 and the first tray 40 are more firmly connected. Furthermore, the screw 932 is tightened from top to bottom, preventing it from loosening and entering the ice pool 27.

[0206] A main body inclined surface 911 may be formed on the back of the ejector main body 91. The main body inclined surface 911 may be formed to extend from the upper portion to the lower end of the ejector main body 91 and be inclined toward the front as it extends downward.

[0207] On the other hand, a screw boss ( Figure 20 The screw boss 914 may be formed so as to allow a screw ( 914 ) to be tightened from the front of the mounting member 26 when the ice maker 30 is mounted. Figure 20 Therefore, in addition to the tray mounting portion 43, the ice maker 30 can be more firmly fixed by the screw boss 74.

[0208] The second pin 92 can be provided on the inclined surface 911 of the main body and can protrude rearward. At this time, the second pin 92 can be formed in a number corresponding to the second unit 512 at a position corresponding to the second unit 512. Moreover, when the second tray 50 is fully rotated, the second unit 512 can be deformed by pressing the lower part of the second unit 512. Furthermore, the second pin 92 can protrude in a manner having a curvature or inclination corresponding to the rotation trajectory of the second tray 50. Therefore, when the second tray 50 is rotated to the maximum open state, the plurality of second pins 92 are respectively connected to the entire second unit 512, so that the ice inside the second unit 512 can be moved.

[0209] Hereinafter, an assembly structure of the ice maker having the above-mentioned structure will be described.

[0210] Figure 19 This is a three-dimensional view of the ice maker viewed from another direction. Figure 20 It is an exploded perspective view showing another coupling structure based on the first tray of the ice maker.

[0211] As shown in the figure, the ice maker 30 can be mounted with multiple components based on the first tray 40. To this end, the first tray 40 can be formed of a sturdy metal material. Furthermore, the first connecting portion 411, the motor unit mounting portion 44, and the ejector mounting portion 45 can be integrally formed on the first tray 40. Furthermore, the tray mounting portion 43 can also be integrally formed on the first tray 40.

[0212] Specifically, the cover 60 can be mounted on the top surface of the first tray 40. The cover 60 can be coupled to the first tray 40 using the screws 616. Furthermore, the cover 60 is coupled to the first ejector 80, and the first ejector 80 can be configured to be movable along the ejector guide 650 of the cover 60. Therefore, it can be considered that the first ejector 80 is also configured on the first tray 40.

[0213] Furthermore, the second tray 50 can be positioned below the first tray 40. In this case, the first connecting portion 411 and the second connecting portion 522 can be aligned with each other, and the tray holders 72 on either side can be inserted into the second connecting portion 522 via the first connecting portion 411. Furthermore, both ends of the shaft 73 are inserted into the tray holders 72 on either side, allowing them to rotate together. Furthermore, both ends of the elastic member 75 can be connected between the tray holder 72 and the tray support 52. Furthermore, the connecting rod 76 can be connected to the first ejector 80 and the tray support 52.

[0214] Furthermore, the motor unit 70 may be mounted on the motor unit mounting portion 44 . The coupling protrusion 702 of the motor unit 70 may be inserted into the coupling hole 445 , and the screw 704 may be fastened to the screw fastening portion 4461 via the fastening protrusion 703 .

[0215] When the motor unit 70 is installed, the driving shaft 701 protruding in the same direction as the installation direction of the motor unit 70 can be connected to the motor connecting portion 722 of the tray holder 72. Therefore, due to the operation of the motor unit 70, the second tray 50 can be rotated, and the first ejector 80 can be operated in conjunction with it.

[0216] Furthermore, the second ejector 90 may be mounted on the ejector mounting portion 45 . When the ejector coupling portion 93 is disposed on the ejector mounting portion 45 , the ejector mounting portion 45 and the ejector coupling portion 93 may be coupled by tightening the screw 932 .

[0217] As described above, the ice maker 30 can be coupled with the first tray 40 as a reference. The assembled ice maker 30 can be mounted on the door 21. The screws 262 fastened from the rear of the mounting member 26 can be fastened to the tray mounting portion 43 to secure the ice maker 30. Furthermore, the additional screws 915 fastened from the rear of the mounting member 26 can be fastened to the screw boss 74 of the second ejector 90, thereby further securely coupling the ice maker 30.

[0218] Hereinafter, the operation of the ice maker 30 having the above-described structure will be described with reference to the drawings.

[0219] Figure 21 It is a cross-sectional view showing a state in which water is supplied to the ice maker.

[0220] As shown in the figure, in order to make ice in the ice maker 30 , water is supplied to the cell C. Water supplied from the water supply pipe 640 is supplied to the water supply portion 64 and can be supplied to the interior of the cell C through the cell extension 422 via the water supply port 644 .

[0221] On the other hand, during water supply, the second tray 50 can be in an open state at a set angle. The water supply unit 64 can supply water to the second tray 50 through one of the plurality of first cells 401. When the second tray 50 is open, water can flow from one cell C to another adjacent cell C and fill the second tray 50.

[0222] Also, in a state in which the second tray 50 is opened, even if water is further supplied after the supplied water completely fills the second cell 512 , the supplied water fills the second tray 50 without overflowing due to the lower wall 513 .

[0223] With a set flow rate of water supplied to the second tray 50, the second tray 50 is rotated clockwise to close in order to make ice. Furthermore, when the second tray 50 is closed, the upper walls 421 are inserted into the inner side of the lower wall 513 and connect with each other. Water on the inner side of the lower wall 513 flows into each upper wall 421, thereby filling the entire cell C.

[0224] Figure 22 It is a cross-sectional view of the ice maker when it is in the ice making state.

[0225] As shown in the figure, if the water supply to the second tray 50 is completed, the second tray 50 rotates clockwise, and the second tray 50 is connected to the first tray 40 and is in Figure 22 The state shown is obtained, and the operation for ice making can be started.

[0226] The second tray 50 may be attached to the first tray 40 by the elastic force of the elastic member 75 mounted on the tray holder 72. Also, the first unit 401 and the second unit 512 may be connected to each other, so that spherical ice can be made inside the unit C.

[0227] When ice making begins, cold air is supplied to the ice maker 30 through the cold air inlet 232 of the ice making chamber 23. Specifically, cold air flows into the cold air guide 62 through the duct 63 connected to the cold air inlet 232. Furthermore, the cold air is discharged from the front to the rear through the cold air guide 62, passes through the upper portions of the plurality of first cells 401, and then is discharged through the cover outlet 661 on the back of the ice maker 30.

[0228] Furthermore, as cold air passes through the cold air flow channel 600, the top surface of the first portion 41 is cooled. As the upper portions of the plurality of first cells 401 and the cell extensions 422 are cooled, the interiors of each first cell 401 are also cooled due to conduction. Consequently, the interiors of the entire first cell 401 formed in the first tray 40 are uniformly cooled, and the water contained within the cells C can be frozen at a uniform rate.

[0229] On the other hand, the cold air discharged through the cover outlet 661 can be discharged to the rear of the ice maker 30 and toward the ice pool 27 disposed below the ice maker 30. Furthermore, it can be recovered to the freezer compartment 12 or the evaporator 14 side through the cold air outlet 233 of the ice making chamber 23.

[0230] The supply of cold air through the cold air guide 62 may be continuously supplied during ice making. In addition, when the temperature sensed by the temperature sensor 77 is lower than the set temperature, it is determined that ice making is completed.

[0231] The second tray 50 remains closed until ice making is completed. Furthermore, the first ejector 80 remains at the uppermost position of the guide groove 652 , and the first pin 82 remains above the cover hole 611 and the unit extension 422 .

[0232] When the ice making operation is completed, the heater 48 can be operated. The heat generated in the heater 48 heats the upper portion of the first unit 401 and is evenly transferred to the entire first unit 401, thereby making it easy to separate ice from the first unit 401.

[0233] Figure 23 It is a cross-sectional view of the ice maker when it is in the ice moving state.

[0234] As shown in the figure, during the ice removal operation, the second tray 50 rotates counterclockwise due to the driving of the motor unit 70 to open the unit C. The second tray 50 can be as follows Figure 23 Furthermore, during the rotation of the second tray 50 , the ice 1 attached to the first tray 40 and the second tray 50 may be separated and fall to the bottom.

[0235] Specifically, if ice 1 is attached to the first tray 40, the first ejector 80 can be used to remove the ice. If the second tray 50 rotates counterclockwise, the connecting rod 76 moves downward, and the first ejector 80 connected to the connecting rod 76 moves downward from top to bottom. At this time, due to the downward movement of the first ejector 80, the plurality of first pins 82 are simultaneously inserted into the first unit 401, thereby moving the ice 1 attached to the first unit 401 downward.

[0236] As another example, if the output of the heater 48 is sufficiently large, the operation of the heater 48 can heat the surface of the first unit 401 when the ice is removed, thereby preventing the produced ice from adhering to the first unit 401. In this case, the first ejector 80 is not required, and therefore the first ejector 80 and the ejector guide 650 structure can also be omitted.

[0237] When the ice 1 is attached to the second tray 50, the ice can be removed by the second ejector 90. If the second tray 50 rotates counterclockwise, the second pin 92 of the second ejector 90 contacts the bottom surface of the second tray 50.

[0238] At this time, the second tray 50 is formed of an elastically deformable material. Therefore, if the second tray 50 is further rotated counterclockwise while the second pin 92 and the second tray 50 are in contact, the second pin 92 presses the second unit 512, causing it to deform. Due to the deformation of the second unit 512, the ice I can be separated from the second unit 512. Furthermore, the plurality of second pins 92 can simultaneously deform the plurality of second units 512, thereby completely removing the ice I attached to the plurality of second units 512.

[0239] The ice 1 removed from the ice maker 30 may fall downward and be stored in the ice well 27. Furthermore, when the second tray 50 rotates, the full ice sensor 71 rotates, thereby confirming whether the ice well 27 is fully filled with ice. If the full ice sensor 71 determines that the ice well 27 is full of ice, the water supply to the ice maker 30 and the ice making operation are stopped.

[0240] When the ice pool 27 is not full of ice, the second tray 50 returns to the state as shown in FIG. Figure 21 In that state, water supply for ice making can be started. And, ice making can be continued by executing ice making operation and ice transfer operation again.

[0241] On the other hand, in addition to the aforementioned embodiments, the present invention may also implement various other embodiments. Other embodiments of the present invention are described in detail below with reference to the accompanying drawings. Furthermore, several components not described below are identical to those in the aforementioned embodiments. Therefore, to avoid duplication, their detailed descriptions or illustrations may be omitted and the same reference numerals may be used for description. Specifically, only those components that differ from the aforementioned embodiments will be described in detail below.

[0242] Figure 24 It is an exploded perspective view showing the coupling structure of the first tray according to the second embodiment of the present invention.

[0243] As shown in the figure, the ice maker 30 of the second embodiment of the present invention can be identical to the first embodiment except for the first tray 40a. Moreover, the overall appearance of the first tray 40a in the assembled state can be identical to that of the first embodiment.

[0244] The first tray 40a of the second embodiment may be configured such that the first portion 41a and the motor unit mounting portion 44a are separately molded and then joined together. Furthermore, the first portion 41a and the motor unit mounting portion 44a may be formed of the same metal material.

[0245] The first portion 41a may be formed with a plurality of first units 401 and a unit extension 422. Furthermore, the first portion 41a may also be formed with a sensor mounting portion 414 and a terminal mounting portion 415. Furthermore, the first portion 41a may be formed with a tray rib 416. Furthermore, a tray mounting portion 43 may be formed at the front end of the first portion 41a. Furthermore, an ejector mounting portion 45 may be formed at the front end of the first portion 41a.

[0246] The motor unit mounting portion 44a may be coupled to the side of the first portion 41a. The tray first coupling portion 419 may be formed at a side end of the first portion 41a. Furthermore, a threaded hole 4191 may be formed in the tray first coupling portion 419. The first coupling portion 419 may be formed in a shape corresponding to the second coupling portion 449 formed on the motor unit mounting portion 44a. As an example, the first coupling portion 419 may be recessed in a shape corresponding to the second coupling portion 449.

[0247] The motor unit mounting portion 44 a may include the second portion 441 and the third portion 442 . That is, the first tray 41 a may include the second portion 441 and the third portion 442 .

[0248] A second coupling portion 449 may be formed at the end of the third portion 442, protruding toward the first portion 41. The second coupling portion 449 may be formed in a shape corresponding to the first coupling portion 419 and may be inserted into the first coupling portion 419. Furthermore, a threaded hole 4491 may be formed in the second coupling portion 449 of the tray.

[0249] When the second coupling portion 449 is inserted into the first coupling portion 419 and fixed for the first time, the screws 4192 may be inserted from above the second coupling portion 449 through the plurality of threaded holes 4191 and 4491 to be tightened.

[0250] The first tray 40 may be assembled by firmly coupling the first coupling portion 419 and the second coupling portion 449. In addition, the cover 60, the second ejector 90, the motor unit 70, and the second ejector 90 may be coupled to the first tray 40 in a state where the first tray 40 is assembled.

[0251] Figure 25 It is an exploded perspective view showing the coupling structure of the first tray according to the third embodiment of the present invention.

[0252] As shown in the figure, the ice maker 30 of the third embodiment of the present invention can be identical to the first embodiment except for the first tray 40b. Moreover, the overall appearance of the first tray 40b in the assembled state can be identical to that of the first embodiment.

[0253] The first pallet 40b of the third embodiment may be constructed by independently molding the unit portion 41b' and the mounting seat portion 41b" and then combining them with each other. That is, the first pallet 40b may include a pallet portion 41b, which may be realized by combining the unit portion 41b' and the mounting seat portion 41b". The pallet portion 41b may be referred to as a first portion.

[0254] At least one of the unit portion 41b' and the mounting seat portion 41b" may be formed of a metal material. As an example, the mounting seat portion 41b" on which a plurality of components are mounted and which serves as the mounting function of the ice maker 30 may be formed of a metal material. Furthermore, the unit portion 41b' may be formed of a plastic material. Of course, the unit portion 41b' may also be formed of a metal material.

[0255] The unit portion 41 b ′ may be formed with a plurality of the first units 401 and a unit extension portion 422 . Furthermore, the unit portion 41 b ′ may also be formed with a sensor mounting portion 414 .

[0256] A tray rib 416 may be formed on the mounting seat portion 41b". Furthermore, the terminal mounting portion 415 may be formed on the mounting seat portion 41b". Furthermore, a tray mounting portion 43 may be formed at the front end of the mounting seat portion 41b". Furthermore, an ejector mounting portion 45 may be formed at the front end of the mounting seat portion 41b". Furthermore, the first connecting portion 411 may be formed on the bottom surface of the mounting seat portion 41b". Furthermore, the motor unit mounting portion 44 may be formed on the side of the mounting seat portion 41b".

[0257] On the other hand, a third coupling portion 4193 protruding forward may be formed at the front end of the unit portion 41b'. A plurality of threaded holes 4194 may be formed in the third coupling portion 4193. Furthermore, a fourth coupling portion 4195 coupled to the third coupling portion 4193 may be formed at the rear end of the mounting seat portion 41b". A plurality of threaded holes 4196 may be formed in the fourth coupling portion 4195.

[0258] The fourth coupling portion 4195 may be formed in a shape corresponding to the third coupling portion 4193. As an example, the fourth coupling portion 4195 may be recessed in a shape corresponding to the third coupling portion 4193. The third coupling portion 4193 may be inserted into the fourth coupling portion 4195.

[0259] When the third coupling portion 4193 is inserted into the fourth coupling portion 4195 and fixed for the first time, a screw 4197 may be inserted from above the third coupling portion 4193 through the threaded holes 4194 and 4196 to be tightened. A plurality of screws 4197 may be tightened.

[0260] The first tray 40b may be assembled by firmly coupling the third coupling portion 4193 and the fourth coupling portion 4195. In addition, in a state where the first tray 40b is assembled, the cover 60, the second ejector 90, the motor unit 70, and the second ejector 90 may be coupled to the first tray 40b.

[0261] Figure 26 : is an exploded perspective view showing the combined structure of the first tray and the motor unit of the fourth embodiment of the present invention. Figure 27 is a cross-sectional view showing a coupled state of the first tray and the motor unit.

[0262] The refrigerator 1 of the fourth embodiment of the present invention may include an ice maker 30. The overall structure of the ice maker 30 is the same as that of the first embodiment, with only slight differences in the structures of the first tray 40c and the motor unit 70c.

[0263] As shown in the figure, the first tray 40c includes a first portion 41. A plurality of first cells 401 may be formed in the first portion 41, forming the upper portion of the ice-making unit C. The first cells 401 are open downward. A cell extension 422 may be formed at the upper end of the first cells 401, extending upward from the first portion 41. The cell extension 422 may serve as a buffer for water flow when the first ejector 80 is inserted and removed and when a large amount of water is formed during ice formation.

[0264] A tray mounting portion 43 may be formed at one end of the first tray 40c. The tray mounting portion 43 is coupled to one side of the ice making chamber 23 to secure the ice maker 30. Furthermore, an ejector mounting portion 45 for mounting the second ejector 90 may be formed at one end of the first tray 40c having the tray mounting portion 43 formed thereon. Furthermore, a first connecting portion 411 protruding downward may be formed on the bottom surface of the first portion 41. The second tray 50 may be rotatably connected to the first connecting portion 411. As the second tray 50 rotates, the first tray 40c and the second tray 50 may be coupled to each other to form an ice making unit C. The second tray 50 may rotate according to ice making and ice moving operations.

[0265] A motor unit mounting portion 44c for mounting the motor unit 70c may be formed at one side end of the first tray 40c. The motor unit mounting portion 44c may extend downward from a side end of the first portion 41.

[0266] Specifically, the motor unit mounting portion 44c may include a second portion 441c coupled to the motor unit 70c and a third portion 442c connecting the first portion 41 and the second portion 441c. That is, the first tray 40c may also include the second portion 441c and the third portion 442c.

[0267] The motor unit mounting portion 44c may be integrally formed with the first tray 40c. Also, as described in the second and third embodiments, at least a portion of the motor unit mounting portion 44c may be formed separately from the first tray 40c and then joined to each other.

[0268] The second portion 441c is coupled to the lower portion of the motor unit 70c and may be positioned downward relative to the top surface of the first portion 41. The second portion 441c may include a coupling bottom surface 443c coupled to the bottom surface of the motor unit 70c and a coupling edge 444c coupled to the peripheral surface of the motor unit 70c.

[0269] The coupling edge 444c may extend upward along the outer side of the coupling bottom surface 443c and may be formed on the remaining portion of the peripheral edge of the coupling bottom surface 443c except for one side end where the motor unit 70c is inserted.

[0270] The motor unit mounting portion 44c may be formed with a coupling hole 445c for coupling with the motor unit 70c. The coupling hole 445c may be formed to extend through the coupling portion edge 444c. There may be a plurality of coupling holes 445c, which may be spaced apart from each other. Furthermore, the coupling holes 445c may be formed at positions corresponding to the coupling protrusions 702c formed on the motor unit 70c.

[0271] Furthermore, a screw fastening portion 446 c into which the fastening protrusion 703 c of the motor unit 70 c is inserted and engaged may be protruded from the motor unit mounting portion 44 c.

[0272] The third portion 442c may extend downward from the side end of the first portion 41. The third portion 442c may extend to the bottom of the motor unit 70c and may extend to the second portion 441c. An extension opening 447c may be formed in the third portion 442c for the drive shaft 701 of the motor unit 70c to pass through. Therefore, when the motor unit 70c is mounted on the motor unit mounting portion 44c, the drive shaft 701 may be connected to the tray holder 72 through the extension opening 447c. Furthermore, the drive shaft 701 of the motor unit 70c may be located at a position lower than the first portion 41.

[0273] The lower portion of the motor unit 70c can be mounted on the motor unit mounting portion 44c. Furthermore, the coupling protrusion 702c can be formed on one side of the bottom surface of the motor unit 70c. The coupling protrusion 702c can extend toward the coupling hole 445c. Furthermore, a fastening protrusion 703c can be formed on the other side of the bottom surface of the motor unit 70c. The fastening protrusion 703c can protrude downward at a position corresponding to the mounting portion groove 446c.

[0274] When the motor unit 70c is mounted on the motor unit mounting portion 44c, the coupling protrusion 702c can be inserted into the coupling hole 445c, and the fastening protrusion 703c can be inserted into the screw fastening portion 446c. Furthermore, the screw 704c can pass through the fastening protrusion 703c and be fastened to the screw fastening portion 446c, thereby securing the motor unit 70c to one side of the first tray 40c.

[0275] Figure 28 It is a three-dimensional diagram of the first tray of the fifth embodiment of the present utility model.

[0276] The refrigerator 1 of the fifth embodiment of the present invention may include an ice maker 30. The overall structure of the ice maker 30 is the same as that of the first embodiment, with only a slight difference in the structure of the first tray 40e.

[0277] As shown in the figure, the first tray 40e includes a first portion 41e, on which a cell-forming portion 42 may be formed. The cell-forming portion 42 may form the first cells 401 that constitute the upper portion of the ice-making cell C and may have a shape slightly recessed from the top surface of the first portion 41e. Furthermore, the cell-forming portion 42 exposed from the top surface of the first portion 41e may be formed in an arcuate shape corresponding to the shape of each first cell 401.

[0278] Furthermore, the unit forming portion 42 may include an upper wall 421 extending downward, and the first unit 401 may be formed inside the upper wall 421. The first unit 401 is open downward. Furthermore, the unit forming portion 42 may include a unit extension portion 422. The unit extension portion 422 may be formed at the upper end of the first unit 401 and extend upward from the first portion 41e.

[0279] The first portion 41e can be formed to have a width sufficient to form a plurality of the unit forming portions 42 arranged in two rows. Therefore, the front-to-back width of the first tray 40e can be smaller than that of the first tray in the aforementioned embodiment. Therefore, the cold air supplied to the first tray 40e can be directed directly toward the first portion 41e.

[0280] A tray mounting portion 43 may be formed at the front end of the first portion 41e. The tray mounting portion 43 is coupled to one side of the ice-making chamber 23 to secure the ice-maker 30. Furthermore, an ejector mounting portion 45 for mounting the second ejector 90 may be formed at one end of the first tray 40e, where the tray mounting portion 43 is formed. Furthermore, a downwardly protruding first connecting portion 411e may be formed on the bottom surface of the first portion 41e. The second tray 50 may be rotatably connected to the first connecting portion 411e.

[0281] A motor unit mounting portion 44e for mounting the motor unit 70 may be formed at one side end of the first tray 40e. The motor unit mounting portion 44e may extend laterally from the side end of the first portion 41. The structure of the motor unit mounting portion 44e may be the same as that of the aforementioned first embodiment. However, the motor unit mounting portion 44e may be located to the side of the first portion 41e, that is, to the side of the first unit 401. As an example, the motor unit mounting portion 44e may be arranged on an extension line that is the same as the arrangement direction of the plurality of first units 401 formed in the first portion 41e.

[0282] Furthermore, the motor unit mounting portion 44e is formed to be equal to or smaller than the front-to-back width of the first tray 40e, thereby making the ice maker 30 have an overall compact structure. Therefore, the ice maker 30 can be arranged within the ice making compartment 23, which has limited space in the front-to-back direction, and the overall thickness of the refrigerator compartment door 21 can be prevented from increasing.

[0283] Figure 29 This is a three-dimensional diagram of the first tray of the sixth embodiment of the present invention. Figure 30 1 is a diagram showing the flow of cold air in an ice maker according to a sixth embodiment of the present invention.

[0284] The refrigerator 1 of the sixth embodiment of the present invention may include an ice maker 30. The overall structure of the ice maker 30 is the same as that of the first embodiment, with only a slight difference in the structure of the first tray 40f.

[0285] As shown in the figure, the first tray 40f includes a first portion 41f, on which a cell-forming portion 42 may be formed. The cell-forming portion 42 may form the first cells 401 that constitute the upper portion of the ice-making cell C and may have a shape that is slightly recessed from the top surface of the first portion 41. Furthermore, the cell-forming portion 42 exposed from the top surface of the first portion 41 may be formed in an arcuate shape corresponding to the shape of each first cell 401.

[0286] Furthermore, the unit forming portion 42 may include an upper wall 421 extending downward, and the first unit 401 may be formed inside the upper wall 421. The first unit 401 is open downward.

[0287] Furthermore, the cell forming portion 42 may include a cell extension portion 422f. The cell extension portion 422f is formed at the upper end of the first cell 401 and may extend upward from the first portion 41. The cell extension portion may be configured to allow the first ejector to pass through. Furthermore, the cell extension portion may serve as a buffer to accommodate a portion of the water when a large amount of water is consumed during ice making.

[0288] A tray mounting portion 43 may be formed at the front end of the first portion 41f. The tray mounting portion 43 is coupled to one side of the ice-making chamber 23 to secure the ice-maker 30. Furthermore, an ejector mounting portion 45 for mounting the second ejector 90 may be formed at one end of the first tray 40f, where the tray mounting portion 43 is formed. Furthermore, a downwardly protruding first connecting portion 411e may be formed on the bottom surface of the first portion 41f. The second tray 50 may be rotatably connected to the first connecting portion 411e.

[0289] A motor unit mounting portion 44 for mounting the motor unit 70 may be formed at one side end of the first tray 40 f .

[0290] Furthermore, the cover 60 may be mounted on the top surface of the first tray 40f. The structure and shape of the cover 60 may be the same as those of the first embodiment. The cover 60 may include a cover portion 61 having a plurality of cover holes 611f formed therein, and a cold air guide portion 62 for guiding cold air through the plurality of unit extensions 422f. Furthermore, a duct portion 63 is formed at a side end of the cold air guide portion 62, thereby forming a passage for the cold air flowing into the ice making chamber 23.

[0291] The cover portion 61 may be formed with a plurality of cover holes 611 for inserting the unit extension portion 422f. A cool air flow channel may be formed between the cover portion 61 and the first portion 41. Furthermore, a cover outlet 661 may be formed on the back of the cover 60. Thus, cool air passing through the duct portion 63, the cool air guide portion 62, and the cover portion 61 may be discharged rearward through the cover outlet 661.

[0292] Cold air passing through the cover 61 and first portion 41 can come into contact with and flow through the outer surface of the unit extension 422f. Thus, the unit extension 422f can be cooled by contact with the cold air passing through the first tray 40f. The first tray 40f can be formed of a metal material, which can more effectively freeze the water inside the first unit 401 due to heat conduction. Furthermore, the unit extension 422f can be positioned in the cold air flow path to guide the flow of cold air.

[0293] To this end, the outer surface of the unit extension 422f may include at least one inclined surface. For example, a first inclined surface 4221f may be formed on both sides of the front of the outer surface of the unit extension 422f, and a second inclined surface 4222f may be connected to the rear end of the first inclined surface 4221f. Due to the first inclined surface 4221f and the second inclined surface 4222f, the unit extension may form a hexagonal shape when viewed from above. Of course, the number and configuration of the inclined surfaces may vary depending on the flow pattern of the cold air.

[0294] The first inclined surface 4221f and the second inclined surface 4222f may guide the cool air guided by the cool air guide portion 62 of the cover to be discharged toward the front cover outlet 661. To this end, the first inclined surface 4221f and the second inclined surface 4222f may have a predetermined inclination.

[0295] As an example, the first inclined surface 4221f may have an inclination that moves away from each other as it extends from the front to the rear, and the second inclined surface 4222f may have an inclination that moves closer to each other as it extends from the front to the rear. Of course, the first inclined surface 4221f and the second inclined surface 4222f on both sides may be formed to have different inclinations.

[0296] Furthermore, the plurality of unit extensions 422f may be configured to have different inclinations. That is, the plurality of unit extensions 422f may be configured to rotate with different amounts of rotation based on each unit extension 422f. For example, the unit extension 422f ( Figure 30 The A region in the middle portion 422f may have a configuration structure that is more inclined than other unit extensions 422f.

[0297] Therefore, the cold air flowing along the cold air guide portion 62 can be guided by the outer surface of the unit extension portion 422f to have a smoother flow and be evenly dispersed, so that it can be discharged more smoothly through the cover outlet 661. In addition, the inclination angles of the plurality of unit extension portions 422f can also be different from each other. Figure 30 The number and the inclination angle of the inclined unit extension portions 422 f are merely examples and are not limited thereto.

[0298] Figure 31 This is an exploded perspective view of the second tray of the seventh embodiment of the present invention. Figure 32 It is a cross-sectional view of an ice maker according to a seventh embodiment of the present invention.

[0299] The refrigerator 1 of the seventh embodiment of the present invention may include an ice maker 30. The overall structure of the ice maker 30 is the same as that of the first embodiment, with only slight differences in the structure of the second tray 50g and the configuration of the heater 54.

[0300] As shown in the figure, the second tray 50g may include a tray member 51 formed with a plurality of second units 512 and a tray support 52 supporting the tray member 51. In addition, the second tray 50 may further include a tray cover 53.

[0301] The tray member 51 may include a second tray body 511 formed with a plurality of second units 512. Furthermore, a lower wall 513 may extend upward from the periphery of the tray member. Furthermore, the tray member 51 may be formed of a soft material. As an example, the tray member 51 may be formed of a silicone material. Therefore, the tray member 51 may be tightly attached to the first tray 40 and airtight with each other, and may be deformed when in contact with the second ejector 90 to remove ice.

[0302] The tray support 52 may support the second tray 50 from below. A plurality of support holes 521 may be formed in the tray support 52. The support holes 521 may be formed to allow the second unit 512 protruding downward to pass through.

[0303] On the other hand, the periphery of the support hole 521 can be formed to surround a portion of the outer surface of the second unit 512. Furthermore, a heater 54 can be provided on the tray support 52. The heater 54 heats the second unit 512 and can therefore be referred to as a lower heater. The heater 54 can be arranged along the periphery of the support hole 521.

[0304] For example, a heater groove 5241 may be formed along the periphery of the support member hole 521. The heater groove 5241 may be formed continuously to pass through the region corresponding to the plurality of second units 512. Furthermore, the heater 54 may be inserted into the heater groove 5241. Furthermore, when the tray support member 52 and the tray member 51 are combined, the heater 54 may contact the outer surface of the tray member 51.

[0305] The heater 54 may be operated during the ice making process, and transparent ice without bubbles may be made by the ice maker 30. Furthermore, due to the shape of the cell c formed by the first cells 401, spherical ice may be made.

[0306] To produce transparent spherical ice, the heater 54 can be operated while supplying cold air for ice making after water is supplied. In this case, the heater 54 can be periodically turned on and off. Since the heater 54 heats the second tray 50g, ice formation begins at the top of the cells C and gradually progresses downward. Consequently, bubbles generated during ice formation within the cells C are concentrated in the lower portion of the second tray 50g, i.e., the lower end of the second cells 521. Except for the portion at the lower end where the bubbles are concentrated, the remaining portion of the ice can form transparent ice.

[0307] The position of the heater 54 is not limited to the aforementioned example, and can be disposed at various positions capable of transferring heat to the second unit 521 .

[0308] Furthermore, when the heater 54 is provided, the heater 48 for heating the first tray 40 in the first embodiment can be omitted. Of course, the heaters 48 and 54 can also be provided on the first tray 40 and the second tray 50g.

[0309] Alternatively, the heater can be activated when removing ice from the ice. The heater can be activated to remove ice when ice making is complete. When the heater 54 is turned on, the second unit 512 is heated to melt the surface of the ice. When the surface of the ice is fully melted, the second tray 50g rotates, and the second ejector 90 deforms the tray member 51, making it easier to separate the ice from the second unit 512.

[0310] As another example, if the output of the heater 54 is large enough, the surface of the ice can be sufficiently melted, ensuring separation from the second unit 512. Therefore, if the output of the heater 54 is large enough, the second ejector 90 can be omitted.

[0311] The tray support 52 may have second connecting portions 522 formed on both sides thereof, which may be connected to the tray holder 72. Therefore, when the tray holder 72 rotates, the tray support 52 and the tray member 51 may rotate together. Furthermore, support protrusions 523 may be formed on both sides thereof.

[0312] A tray cover 53 may be provided on the top surface of the tray member 51. The tray cover 53 may have a cover opening 531 formed therein, through which the upper end of the tray member 51 passes, and through which the lower wall 513 may pass. The tray cover 53 may also have a cover coupling portion 532 formed therein, which may be coupled to the tray support 52.

[0313] On the other hand, in the aforementioned embodiment, in order to facilitate understanding of the present invention, an example is described in which the rotating second tray is disposed below the fixed first tray, but the present invention is not limited thereto.

[0314] That is, the present invention can also be applied to various other structures, regardless of the position movement method of the first tray and the second tray, and the second tray that moves based on the fixed first tray is used to make ice and realize ice transfer.

Claims

1. A refrigerator, wherein: include: The box forms a storage space; a door for opening and closing the storage space; as well as an ice maker, disposed on the door; The ice maker comprises: A first tray is formed of a metal material, fixed to the door, and formed with a plurality of first units; a second tray formed of a material different from that of the first tray, and having a plurality of second units formed thereon, the plurality of second units opening and closing the first unit to form a space for making ice; and a motor unit, configured to open and close the second tray; The first tray comprises: a first portion, formed with the first unit; and The second part is for installing the motor unit.

2. The refrigerator according to claim 1, wherein The first tray includes a tray mounting portion, the tray mounting portion being disposed on the first portion so as to secure the first tray to the door; The tray mounting portion protrudes in a direction intersecting the second portion with the first portion as a reference.

3. The refrigerator according to claim 2, wherein: The first tray further includes a third portion bent to connect the first portion and the second portion that are spaced apart from each other.

4. The refrigerator according to claim 2, wherein: The door comprises: an ice making chamber accommodating the ice maker; and a mounting member forming at least a portion of the ice making chamber; A screw passes through the mounting member and is fastened to the tray mounting portion to fix the ice maker to the ice making chamber.

5. The refrigerator according to claim 1, wherein A cover is mounted on the first tray to cover at least a portion of the first portion; The cover is spaced apart from the first portion to form a cool air flow passage that guides cool air supplied for ice making to pass through the first portion.

6. The refrigerator according to claim 5, wherein The cover is provided with a first ejector for moving ice from the first unit; A plurality of unit extensions are formed on the first tray, the plurality of unit extensions being in communication with the interior of the respective first units and extending toward the first ejector; The first ejector passes through the unit extension portion to move ice from the first unit.

7. The refrigerator according to claim 1, wherein The motor unit is formed with a driving shaft and a plurality of unit coupling protrusions, the driving shaft is coupled to the second tray, and the plurality of unit coupling protrusions protrude in the same direction as the driving shaft; A coupling hole for inserting the unit coupling protrusion is formed in the second portion; If the unit coupling protrusion is inserted into the coupling hole, the driving shaft is connected to the second tray.

8. The refrigerator according to claim 1, wherein A first connecting portion is formed on two sides of the first portion that are spaced apart from each other and protrudes toward the second tray; The second tray includes a second connection portion that protrudes to be aligned with the first connection portion, and the rotational force of the motor unit is transmitted to the second connection portion.

9. The refrigerator according to claim 8, wherein Also includes: a tray holder fastened on both sides of the first tray in a manner of passing through the first connection portion and coupled to the second connection portion so as to rotate together with the second connection portion; and A shaft connecting the tray holders on both sides to rotate together; One of the tray holders on both sides is connected to the drive shaft of the motor unit and rotates.

10. The refrigerator according to claim 1, wherein A second ejector is mounted on the first tray. When the second tray rotates, the second ejector contacts the second unit to remove ice from the second unit.

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