Refrigerator

Abstract

The present invention relates to a refrigerator comprising: a box 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.

Description

Technical Field

[0001] The invention relates to a refrigerator. Background Art

[0002] Generally, a refrigerator is a household appliance that can store food at a low temperature in an inner storage space shielded by a door, and 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 being advanced and large-scale, and has various devices for improving the convenience of use. As a representative, an ice maker for automatically making ice and storing it can be provided in the refrigerator.

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

[0005] However, in the case of an ice maker for making spherical ice, it is difficult to maintain the coupling state and alignment between the tray and a plurality of components for making and transferring spherical ice, so there is a problem that ice making reliability is low. Summary of the invention

[0006] An object of an embodiment 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 an embodiment of the present invention is to provide a refrigerator that ensures the ice-making quality of spherical ice.

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

[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 arranged 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 unit 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 the motor unit to be installed.

[0010] A cover that shields at least a portion of the first portion is mounted on the first tray; the cover may be separated from the first portion to form a cold air flow passage that guides cold air supplied for ice making to pass 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 to accommodate the ice-maker, and a mounting member to form 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 ice from 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 the respective first units and extending toward the first ejector; the first ejector may pass through the unit extensions to move ice from 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 disposed on the first portion so that the first tray is fixed 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 part is located above or below the first part, and the first tray may further include a third part connecting the first part and the second part.

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

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

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

[0020] A first connection portion protruding toward the second tray is formed at 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 also include: a tray holder, both sides of the first tray are fastened in a manner of passing through the first connecting part, combined with the second connecting part to rotate together with the second connecting part; 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 driving shaft of the motor unit so as to rotate.

[0022] The second pallet includes: a pallet member formed of a soft material to form the second unit; and a pallet support member supporting the pallet member and having a second connection portion connected to the motor unit, wherein an open support member hole may 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 is connected 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 and 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] The first tray is provided with an ejector mounting portion extending downward and coupled with the second ejector body, the second ejector body is provided with an ejector coupling portion for the ejector mounting portion to be placed, and screws are fastened to the ejector mounting portion so that the ejector mounting portion and the ejector coupling portion can be coupled.

[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 shields the refrigerator compartment formed in the box body, and 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 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, a refrigerator according to an embodiment of the present invention includes: a body forming a storage space; a door opening and closing the storage space; and an ice maker 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 units; a second tray connected to the first tray by rotation, forming a plurality of second units, the plurality of second units together with the first unit forming a space for making ice; and a motor unit 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 may have the following effects.

[0031] According to an embodiment of the present invention, the ice maker may have a structure in which the cover, the motor unit, the second tray, and the first ejector are all mounted on the first tray based on the first tray. Therefore, even when a plurality of components that operate for making and removing ice are repeatedly operated, the combined state and the aligned state can be maintained.

[0032] Furthermore, the ice making quality of the spherical ice can be maintained by maintaining the aligned state of the components of the ice maker, and the ice can be made in a spherical state. In particular, when the ice maker is installed on the door, even if the impact caused by the opening and closing of the door is repeatedly transmitted, the plurality of components can be kept aligned in the first tray, thereby having the advantage of ensuring the ice making quality.

[0033] Furthermore, the assembled ice maker can be fixedly mounted by the tray mounting portion of the first tray. Therefore, the installation or separation operation of the ice maker becomes simple and easy.

[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 the 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 32 is a diagram showing the interior of the ice-making chamber of the door.

[0038] Figure 4 The figure shows a state where the mounting member, the ice maker, and the ice pool are separated from the door.

[0039] Figure 5 It is a three-dimensional 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] Fig. 9 It is an exploded perspective view of the combination structure of the first tray and the cover.

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

[0045] Fig.11 yes Fig.10 11-11 cross-sectional view.

[0046] Fig.12 It is a partial perspective view showing a state where the motor unit is coupled to the first tray.

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

[0048] Fig.14 This is a perspective view of the ice maker in a state where the second tray is opened, as viewed from below.

[0049] Fig.15 yes Fig.13 15-15 cross-sectional view.

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

[0051] Fig.17 It is a three-dimensional diagram of the second ejector of the ice maker.

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

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

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

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

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

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

[0058] Fig.24 1 is an exploded perspective view showing a coupling structure of a first tray according to a second embodiment of the present invention.

[0059] Fig.25 1 is an exploded perspective view showing a coupling structure of a first tray according to a third embodiment of the present invention.

[0060] Fig.26 1 is an exploded perspective view showing a coupling structure of a first tray and a motor unit according to a fourth embodiment of the present invention.

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

[0062] Fig.28 is a perspective view of a first tray according to a fifth embodiment of the present invention.

[0063] Fig.29 4 is a perspective view of a first tray according to a sixth embodiment of the present invention.

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

[0065] Fig.31 4 is an exploded perspective view of a second tray according to a seventh embodiment of the present invention.

[0066] Fig.32 FIG. 1 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 be described in detail. However, the present invention is not limited to the embodiments that illustrate the concept of the present invention, and other inventions or other embodiments within the scope of the concept 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, the terms such as first, second, A, B, (a), (b) etc. 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 a constituent element is recorded as being "connected", "combined" or "contacting" another constituent element, the constituent element may be directly connected or contacting the other constituent element, but it should be understood that there may also be another constituent element that can be "connected", "combined" or "contacting" between the various components.

[0069] Before explaining, we first define the direction. In the embodiment of the present invention, Figure 1 The direction of the front of the door visible in the image is defined as the front, the direction toward the cabinet 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. In addition, the direction toward the center of the door or cabinet can be defined as the inside, and the direction away from the center can be defined as the outside.

[0070] Figure 1 is a front view of a refrigerator according to a 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 figure, 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 box body 10 may be divided into upper and lower parts. The storage space may include a refrigerating chamber 11 and a freezing chamber 12 arranged in upper and lower parts. As an example, the freezing chamber 12 may be a first storage chamber, and the freezing chamber 12 may be a second storage chamber. In addition, an evaporator 14 for cooling the refrigerating chamber 11 and the freezing chamber 12 may be arranged in the freezing chamber 12.

[0073] The door 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. As an 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 cabinet 10 by hinges 131 and 132 and opened and closed by rotating the refrigerator 11. In addition, a pair of refrigerator doors 21 may be provided on the left and right sides, and the refrigerator 11 may be opened and closed by the pair of refrigerator doors 21. In addition, the freezer door 22 may be configured to open and close the freezer 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 like 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. Also, 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 a heat-insulating space, which can be opened and closed by an ice-making chamber door 231. In addition, the cold air of the evaporator 14 can be supplied to the inside of the ice-making chamber 23. To this end, a box duct 15 can be provided inside the box 10, and an ice-making chamber duct 25 can be provided in the refrigerator door 21. In addition, if the refrigerator door 21 is closed, the box duct 15 and the ice-making chamber duct 25 are connected to each other, so that the cold air of the evaporator 14 can be supplied to the ice-making chamber 23. In addition, the air heat-exchanged in the ice-making chamber 23 can be discharged to the freezing chamber 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 arranged in the refrigerating chamber 11, and the flow path of the cold air of the evaporator arranged in the refrigerating chamber 11 can also be formed to supply the cold air to the ice making chamber 23.

[0078] Figure 3 is a diagram showing the interior of the ice making chamber of the door. And, Figure 4 The figure shows a state where 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 may be formed by a recess of a door liner 211 forming the back side of the refrigerating chamber door 21. Also, the back side of the opening of the ice making chamber 23 may be opened and closed by the ice making chamber door 231. Also, a cold air inlet 232 for cold air to flow in and a cold air outlet 233 for cold air to be discharged may be formed at the upper and lower parts 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. In addition, an ice-maker mounting portion 261 to which the ice-maker 30 is coupled may be formed on the mounting member 26. The ice-maker mounting portion 261 may be formed at a position corresponding to the tray mounting portion 43 described below. As an example, the ice-maker mounting portion 261 may be recessed in a shape corresponding to the tray mounting portion 43 so that the tray mounting portion 43 can be inserted.

[0083] Furthermore, the screw 262 is fastened from the front of the mounting member 26 through the ice maker mounting portion 261, and 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 fastened from the front of the mounting member 26, it is possible to fundamentally prevent the ice pool 27 from entering.

[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 a limited space of the ice making chamber 23, the ice maker 30 may need 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 is used to make 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 remaining structure of the ice maker 30 except the space for making ice. In addition, the structure for installing the ice maker 30 can be simplified, and the installation structure can be provided to maintain a secure installation 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 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 in the figure, the ice maker 30 may include a first tray 40 and a second tray 50 for making a plurality of spherical ices. Also, the ice maker 30 may include a cover 60 for guiding the flow of cold air to the first tray 40. Also, the ice maker 30 may include a motor unit 70 for rotating the second tray 50. Also, 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] On the other hand, in this embodiment, the structure in which the first tray 40 and the second tray 50 are arranged vertically is used as an example for explanation, but the present invention is not limited thereto, and various structures can be provided in which ice can be made and moved by the rotation or reciprocating movement of the second tray 50. For example, in a state where the first tray 40 is fixed, the second tray 50 can move in one direction to receive water to make ice, and the second tray 50 can move in another direction to move ice. In this case, the second tray 50 can also reciprocate linearly, and as an example, can move in the front-rear direction or the up-down 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. Also, the first units 401 may be referred to as upper units.

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

[0096] The first tray 40 is formed of a high-rigidity metal material 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 high-rigidity and non-deformable metal material. 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 operation is in progress.

[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 operation reliability of each component can be improved by simplifying the operation path.

[0098] Specifically, when there is no reference structure when assembling and installing the components of the ice maker, the number of multiple components for connecting them increases, which causes a problem of increasing the gap during operation and the accumulated gap.

[0099] However, since the motor unit 70 and the second tray 50 are directly or indirectly connected to each other for operating with the first tray 40 having high rigidity as a reference, the cumulative gap value is reduced by reducing the number of overall components and simplifying the connection structure, thereby ensuring the reliability of operation. For example, when the second tray 50 rotates to remove ice, the second tray 50 can be rotated by the designed rotation amount by minimizing the gap of the second tray 50, and the deformation amount caused by contact with the second ejector 90 can be ensured, and ice can be reliably removed.

[0100] In particular, the motor unit 70 is configured to rotate the second tray 50 by connecting the first tray 40 , so that the operation reliability can be further improved by simplifying the power transmission structure.

[0101] As an example, a tray mounting portion 431 may be formed on the first tray 40. Also, a motor unit mounting portion 44 for mounting the motor unit 70 may be formed on the first tray 40. Also, a first connecting portion 411 connected to the second tray 50 may be formed on the first tray 40. Also, a second ejector 90 may be mounted on the first tray 40.

[0102] The motor unit 70 is connected to the full ice sensing member 71, so as to operate the full ice sensing member 71. The full ice sensing member 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] Also, tray holders 72 may be provided on both sides of the first tray 40 . The tray holders 72 may transmit the rotation 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 penetrate the first connection portion 411 and be coupled to the second connection portion 522. As an example, the holder connection portion 721 may penetrate a bushing 74 installed on the first connection portion 411 and be rotatably installed on the first connection portion 411. Furthermore, the shaft 73 may be inserted into the holder connection portions 721 on both sides arranged in a direction facing each other, and the tray holders 72 on both sides may be connected by the shaft 73.

[0105] The tray holder 72 on the side close to the motor unit 70 may be formed with a motor connection portion 722 connected to the drive shaft 701 of the motor unit 70. Therefore, when the motor unit 70 is operated, the tray holder 72 connected to the motor unit 70 rotates, and the tray holders 72 on both sides can rotate simultaneously using the shaft 73. Therefore, the rotational force can be transmitted to the left and right sides of the second tray 50 at the same time, and the second tray 50 can rotate based on the shaft 73.

[0106] The tray holder 72 may include a holder arm 723 extending in a direction away from the rotation center of the tray holder 72. In addition, an elastic member 75 may be connected to the end of the holder arm 723. As an 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. In addition, the elastic member 75 may provide an elastic force to rotate the second tray 50 in a closing direction, so that the first tray 40 and the second tray 50 are further closely attached when making ice.

[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 for ice removal and may heat the first tray 40. The heater 48 may be disposed along the periphery of the plurality of first units 401. In addition, the heater cover 49 may shield and fix the heater 48.

[0108] The cover 60 may be combined with the first tray 40 above the first tray 40. Also, the cover 60 may have a structure capable of guiding cold air and water to the first tray 40. Also, the cover 60 may 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. Also, the first pins 82 may push the ice inside the first unit 401 to separate the ice through the unit extension 422 described below.

[0112] The second tray 50 may include a tray member 51 formed with a plurality of second units 512 and a tray support 52 supporting the tray member 51. Also, the second tray 50 may further include a tray cover 53. The second tray 50 may be referred to as a second tray assembly, a lower tray, or a moving tray.

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

[0114] The tray member 51 may include a second tray body 511 formed in a planar shape. Also, the second unit 512 may be opened at the top surface of the second tray body 511. Also, a lower wall 513 may extend upward along the outer contour of the second unit 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 unit 512 from overflowing to the outside of the second tray 50. Also, 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 may be formed of a soft material. For example, the tray member 51 may be formed of a silicone material. Therefore, the tray member 51 may be closely attached to the first tray 40 to be airtight, and may be deformed when contacting the second ejector 90 to remove ice.

[0116] The tray support 52 may support the second tray 50 at the bottom. In order to strengthen the soft tray member 51, it may be formed of metal or plastic material. A plurality of support holes 521 may be formed in the tray support 52. The support holes 521 may be formed so that the second unit 512 protruding downwardly can pass through. That is, when the tray member 51 and the tray support 52 are combined, the lower part of the second unit 512 may protrude downwardly through the support holes 521.

[0117] The second connection parts 522 may be formed on both left and right sides of the tray support 52, and the holder connection part 721 may be inserted into the second connection parts 522. At this time, the inner side surface of the second connection part 522 and the holder connection part 721 may be key-coupled, so that the tray support 52 may rotate when the tray holder 72 rotates. In addition, the tray member 51 fixed to the tray support 52 may rotate together.

[0118] Furthermore, support member protrusions 523 may be formed on the left and right sides of the tray support member 52. The support member protrusions 523 may be combined with the lower end of the connecting rod 76 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. In addition, a cover opening 531 may be formed on 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. In addition, 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 be connected with the first unit 401 when the tray member 51 is closed to form the spherical unit C.

[0120] Furthermore, a cover coupling portion 532 extending downward may be formed on the tray cover 53. 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 disposed between the tray cover 53 and the tray support 52 in a fixed state. Therefore, the tray cover 53, the tray support 52, and the tray member 51 may constitute a component in a coupled state 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 combined with the first tray 40. The second ejector 90 may include an ejector body 91 connected to the first tray 40 and a plurality of second pins 92 protruding from the ejector body 91.

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

[0123] Figure 7 is a three-dimensional 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. The first portion 41 may be referred to as a first region or a tray portion.

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

[0126] A plurality of unit forming parts 42 may be formed in the first portion 41. The unit forming parts 42 may form the first unit 401 therein. Also, the upper portion of the unit forming part 42 may be recessed from the first portion 41 in a shape corresponding to the first unit 401. Therefore, the unit forming part 42 may maintain the same thickness as a whole, and may evenly transfer cold air to the entire surface of the first unit 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 protruding below the first portion 41 may be referred to as an upper wall 421. The upper wall 421 may be accommodated inside a 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 through which the first pin 82 can enter and exit.

[0129] Furthermore, when the water supply in the cell C is high, the water in 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 ice. The cell extension 422 may also be called a buffer.

[0130] Furthermore, the water to be supplied 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 with the water supply portion 64.

[0131] The first portion 41 may be provided with a heater groove 413 recessed along the edge of the plurality of unit forming portions 42. 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. The heater 48 may be connected to the upper portion of the unit forming portion 42 when installed in the heater groove 413, and may pass through the region of the plurality of first units 401. Therefore, when the heater 48 is operated, the heat of the heater 48 may be uniformly transferred to the entire first unit 401, and the ice formed inside the first unit 401 may be heated, thereby making it easy to move the ice.

[0132] Furthermore, a sensor groove 414 may be formed on the top surface of the first portion 41. The temperature sensor 77 may be inserted into the sensor groove 414 in a state of being mounted on the cover 60. Furthermore, the temperature sensor 77 may be connected to the first tray 40 in the sensor groove 414, so as to measure 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 electric wire 781. Therefore, the heater 48 and the terminal 78 provided in the first portion 41 do not protrude from the tray body 41, thereby not hindering 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 be in contact with the lower end periphery of the cover 60 when the cover 60 is installed. Furthermore, a concave wire guide portion 417 may be formed on the tray rib 416 to allow the wire 781 connected to the heater 48 to pass through. The wire 781 can be guided to the outside of the cover 60 through the wire guide portion 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 by using the fastening bosses 418.

[0136] The tray mounting portion 43 may be formed on the first tray 40. 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] In detail, 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. In addition, a threaded hole 433 may be formed in the second extension portion 432 for fastening the screw 262 passing through the ice maker mounting portion 261. The second extension portion 432 may be formed in a shape corresponding to the shape of the depression of the ice maker mounting portion 261.

[0138] The tray mounting parts 43 may be arranged in plurality at intervals. For example, the tray mounting parts 43 may be formed at both left and right side ends of the first portion 41. Therefore, the ice maker 30 may be more firmly fixed to the door 21, and in particular, each component of the ice maker 30 may be firmly mounted without moving due to the rotation torque generated during the rotation action.

[0139] The first tray 40 may be provided with a cover 60 on which the first ejector 80 is installed, a second tray 50, a motor unit 70, and a second ejector 90. In addition, when these components are combined with the first tray 40, the entire ice maker 30 can be installed to or separated from the door 21 at one time by tightening or releasing the screw 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 the 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 an ejector coupling portion 93 formed on the second ejector 90 , and a screw 932 penetrating 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. In addition, a threaded hole 452 for fastening the screw 932 may be formed on the mounting portion top surface 451. Therefore, the screw 932 is fastened from the top to the bottom and fastened to the second ejector 90, thereby preventing the screw 932 from being loosened 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. At this time, the first extension surface 454 may extend downward further than the mounting portion top surface 451.

[0144] A fixing protrusion 456 extending in the up-down direction may be formed on the first extension surface 454. The fixing protrusion 456 may protrude toward the second extension surface 453 and may extend in the up-down direction along the first extension surface 454. And, it may be inserted into the fixing groove 912 of the second ejector 90. In addition, 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 part 41 and the back surface of the second extension surface 453. The reinforcing rib 457 may be formed in plurality.

[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. In addition, the front surface of the second extension portion 432 may be in contact with the mounting member 26. Therefore, when the ice maker 30 is mounted, the second extension portion 432 may be supported on the door 21 together with the tray mounting portion 43, thereby maintaining a more stable supporting and mounting state.

[0146] On the other hand, the first connection portion 411 may be formed on the bottom surface of the first portion 41 , and the first connection 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 through which the holder connection portion 721 passes. An upper groove 4112 may be formed at 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, so that the boss 74 can be fixed to the inner side of the upper opening 4111. In addition, the retainer connecting portion 721 can pass through the boss 74. The retainer connecting portion 721 can be configured to pass through the inner side of the boss 74 and be rotatable. Therefore, the retainer connecting portion 721 can freely rotate with the first connecting portion 411 as an axis.

[0149] The first connection portion 411 may be located further back 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 formed integrally with the first tray 40. The motor unit mounting portion 44 may protrude laterally from one end of the left and right sides 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 in a state of 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 connected between 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. Also, 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 also be directly connected to the first portion 41.

[0154] The second portion 441 may be combined with the upper portion of the motor unit 70, and thus may be located above the top surface of the first portion 41. The second portion 441 may include a combined portion top surface 443 and a combined portion edge 444. The combined portion top surface 443 may be formed to have a size corresponding to the top surface of the motor unit 70, and may be placed on the top surface of the motor unit 70.

[0155] The edge 444 of the joint portion may extend downward along at least a portion of the outer end of the top surface 443 of the joint portion. As an example, the edge 444 of the joint portion may include: a first edge portion 4441 formed along the front and rear ends of the edge 444 of the joint portion; and a second edge portion 4442 formed along the side end of the edge 444 of the joint portion, connecting 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 an accurate position by the joint top surface 443 and the joint edge 444.

[0157] The pair of ribs of the second edge portion 4442 may be separated from each other. In addition, one side of the pair of ribs away from the third portion 442 may be connected to the side surface of the motor unit 70. In addition, the third portion 442 may be connected to the pair of ribs in its entirety. Therefore, the rigidity of the second portion 441 connected to the third portion 442 may be enhanced, and the combined rigidity of the second portion 441 and the third portion 442 may also be further enhanced.

[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 to penetrate 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. The coupling hole 445 may be provided in a plurality, and may be spaced apart from each other and formed at a position corresponding to the coupling protrusion 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 top surface 443 of the coupling portion, and may be recessed to insert 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 protruding from the mounting groove 446.

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

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

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

[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 for guiding cold air to the first tray 40. The cold air guide 62 may include a guide surface 621, which may form a part of the cover 60 and guide cold air forward. The guide surface 621 may have an inclination that decreases as it approaches the first unit 401. In addition, a guide edge 622 may be formed along the periphery of the guide surface 621, and the guide edge 622 may be connected to the top surface of the first portion 41 to form a cold air flow channel 600.

[0165] Furthermore, the cold air guide portion 62 may include a duct portion 63 protruding laterally. The duct portion 63 may extend in a manner of communicating 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 flow inlet 232 flows into the inner side of the cold air guide portion 62 via the duct portion 63, flows backward along the guide surface 621, and passes through the cold air flow passage 600. The cold air passing through the guide surface 621 toward the rear cools the first tray 40 while passing through the top surface of the first tray 40.

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

[0168] Furthermore, a plurality of cover holes 611 may be formed in the cover portion 61. Furthermore, the unit extension portion 422 may be inserted into the cover hole 611. The unit extension portion 422 may be configured to pass through the cold air flow channel 600 through which cold air flows. Therefore, the unit extension portion 422 may be cooled by contact with the cold air passing through the cold air flow channel. The heat of the cooled unit extension portion 422 may be conducted and thus transferred to the inside of the first unit 401, and the plurality of first units 401 may be uniformly cooled.

[0169] The cold air flowing through the cold air flow passage 600 passes through 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 cell 401 can be uniformly cooled, and ice can be made at a uniform speed 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] In addition, before the ice making operation is implemented, the first tray 40 can also be cooled by cold air. Due to the characteristics of the material, the first tray 40 can be cooled by cold air to improve the preheating efficiency. Therefore, the ice making efficiency during the water supply and ice making operation can be further improved.

[0172] In addition, due to conduction, heat can be transferred to the entire first tray 40, and heat can be uniformly transferred to the plurality of cells C as a whole. Therefore, the ice making speed deviation between the plurality of cells C can be reduced. In addition, the shape and size of ice inside the cells C can be made uniform, and in particular, the height difference of ice protruding toward the cell extension portion 422 can be reduced.

[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, so that the cover 60 and the first tray 40 can be combined.

[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 to 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. In addition, the extended end of the cover fastening portion 623 is formed in a hook shape so as to be locked with 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 by screws fastened in the up-down direction.

[0177] On the other hand, the cover portion 61 may be formed with a cover side surface 65 and a cover back surface 66 extending upward at both left and right side ends and a rear end. The cover side surface 65 and the cover back surface 66 may be referred to as a cover edge. The first ejector 80 may be provided inside a space formed by the cover side surface 65 and the cover back surface 66.

[0178] The cover side surface 65 may be formed with an ejector guide 650 for guiding the movement of the first ejector 80. The ejector guide 650 may be formed on both left and right sides of the cover 60. The ejector guide 650 may be formed in a groove shape cut along the upper and lower directions on the cover side surface 65. In addition, both side ends of the ejector body 81 may pass through the ejector guide 650. Therefore, the first ejector 80 may move up and down along the ejector guide 650.

[0179] In a state where 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. In addition, 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 in the up-down direction, and the first ejector 80 may be moved in the up-down direction.

[0180] Furthermore, a cover outlet 661 may be formed at the lower end of the cover back surface 66. The cover outlet 661 may be connected to the space between the cover 61 and the top surface of the first tray 40. Therefore, the cold air flowing between the cover 61 and the top surface of the first tray 40 may be discharged to the rear 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] Fig.12 is a partial perspective view showing a state where a motor unit is combined with the first tray. Fig.13 It is a front view showing the connection structure of the first tray, the second tray, and the motor unit.

[0183] As shown in the figure, the motor unit 70 is realized by a combination of a plurality of gears and a motor inside. In addition, a driving shaft 701 protruding from the motor unit 70 can be connected to the second tray 50 through the tray holder 72. Therefore, due to the motor unit 70, the second tray 50 can 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. In detail, the unit coupling protrusion 702 can be inserted into the coupling hole 445. The coupling protrusion 702 can be formed in a pair on the left and right sides. If the coupling protrusion 702 is moved laterally in a manner of being inserted into the coupling hole 445, the top surface of the motor unit 70 is connected to the top surface 443 of the coupling portion, and the edge 444 of the coupling portion is connected to the peripheral surface of the motor unit 70, and the motor unit 70 is supported.

[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 portion groove 446 and connected to 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, so that the motor unit 70 may be fixed more firmly.

[0186] On the other hand, in a state where 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 may extend in the same direction. Therefore, if the motor unit 70 is moved sideways to be mounted on the motor unit mounting portion 44, the coupling of the coupling protrusion 702 and the coupling hole 445 and the coupling of the drive shaft 701 and the tray holder 72 may be simultaneously achieved. In addition, the screw 704 is tightened in the same direction as the insertion direction of the motor unit 70, so when the screw 704 is tightened, the coupling of the coupling protrusion 702 and the coupling hole 445 and the coupling of the drive shaft 701 and the tray holder 72 may be more firmly achieved.

[0188] Fig.14 is a perspective view of the ice maker in a state where the second tray is open, as viewed from below. Fig.15 yes Fig.13 15-15 sectional view of. And, Fig.16 yes Fig.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 one side of the tray holder 72, so that power can be transmitted to the tray holder 72 and the second tray 50.

[0190] The second tray 50 is connected to the first tray 40 by the tray holder 72, and can rotate about the shaft 73. That is, the first tray 40 remains fixed, and as the motor unit 70 is driven, the second tray 50 rotates to open and close the unit C, so as to realize the operation of making and moving ice.

[0191] In detail, the second connection portion 522 may be aligned with the first connection portion 411 and may be arranged at a position further outward than the first connection portion 411. At this time, 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 formed of a wear-resistant lubricating material such as engineering plastic. Therefore, the second connection portion 522 and the first connection portion 411 are supported on both sides by the boss 74, and the second tray 50 can ensure that the accurate configuration position is maintained and rotates without wandering. In addition, the rotation of the retaining member connection portion 721 passing through the boss 74 can also be smoothly achieved.

[0193] Furthermore, the tray holders 72 disposed on both sides of the second tray 50 allow both sides of 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 be combined with the second connection portion 522, so as to rotate 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] In addition, both ends of the shaft 73 may be respectively inserted into the holder connecting parts 721 of the tray holders 72 formed on both sides. The shaft 73 may have a polygonal cross section. Therefore, the tray holders 72 on both sides connected by the shaft 73 rotate simultaneously without falling off.

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

[0196] Furthermore, a lower hole 5221 may be formed on the inner side of the second connection portion 522, and the connection portion protrusion 7211 may be inserted into the inner side of the lower hole 5221. At this time, a connection groove 5222 for inserting the connection portion protrusion 7211 may be formed on the inner side of the lower hole 5221. Therefore, when the holder connection portion 721 rotates due to the rotation of the driving shaft 701, the second tray 50 may rotate together due to the combination of the connection portion protrusion 7211 and the connection groove 5222.

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

[0198] Fig.17 is a three-dimensional diagram of the second ejector of the ice maker. And, Fig.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. In addition, the second ejector body 91 may extend downwards further than the lowermost end of the rotation radius of the second tray 50.

[0200] The front of the second ejector body 91 may 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 body ribs 912 intersecting each other, and the rigidity of the second ejector body 91 may be enhanced due to the main body ribs 912.

[0201] Furthermore, the top surface of the second ejector body 90 may be combined with the ejector mounting portion 45. The second ejector body 91 may be formed with an ejector coupling portion 93 coupled with the ejector mounting portion 45. The ejector coupling portion 93 may be formed on the front and top surfaces of the second ejector body 91. Furthermore, the ejector coupling portion 93 may 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 may be formed on the top surface of the ejector coupling portion 93.

[0202] The upper end of the second ejector body 91 formed with the ejector coupling portion 93 can be inserted into and fixed to the ejector mounting portion 45. In detail, 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. In addition, the top surface of the ejector coupling portion 93 can be connected to 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 connected to and fixed to the respective surfaces of the upper portion of the second ejector 90.

[0203] On the other hand, a fixing groove 912 may be formed on the back 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 is coupled to 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, so that the second ejector 90 is coupled 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, and guiding the second ejector 90 to an accurate position when installing the second ejector 90, so that the plurality of threaded holes 452 and 931 can be aligned. In addition, due to the tightening of the screw 932, the second ejector 90 and the first tray 40 can be more firmly combined. In addition, the screw 932 is a structure that is tightened from the top to the bottom, so that the screw 932 can be prevented 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 to be inclined toward the front as it extends downward.

[0207] On the other hand, a screw boss ( Fig. 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. Fig. 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 may be disposed on the main body inclined surface 911 and may protrude rearward. At this time, the second pin 92 may be formed in a number corresponding to the second unit 512 at a position corresponding to the second unit 512. Furthermore, when the second tray 50 is fully rotated, the second unit 512 may be deformed by pressing the lower portion of the second unit 512. Furthermore, the second pin 92 may protrude in a manner having a curvature or an 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, the assembly structure of the ice maker having the above-mentioned structure will be described.

[0210] Fig.19 is a three-dimensional view of the ice maker viewed from another direction. Fig. 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 equipped with a plurality of components based on the first tray 40. To this end, the first tray 40 can be formed of a solid metal material. In addition, 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. In addition, the tray mounting portion 43 can also be integrally formed on the first tray 40.

[0212] In detail, the cover 60 may be installed on the top surface of the first tray 40. The cover 60 may 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 may be configured to be movable along the ejector guide 650 of the cover 60. Therefore, it can also be considered that the first ejector 80 is also configured on the first tray 40.

[0213] Furthermore, the second tray 50 may be arranged below the first tray 40. At this time, the first connection portion 411 and the second connection portion 522 may be in a state of being aligned with each other, and the tray holders 72 arranged on both sides are inserted into the second connection portion 522 through the first connection portion 411. Furthermore, both ends of the shaft 73 are inserted into the tray holders 72 on both sides and are combined to rotate together. Furthermore, both ends of the elastic member 75 may be connected to the tray holder 72 and the tray support 52. Furthermore, the connecting rod 76 may be connected to the first ejector 80 and the tray support 52.

[0214] Also, 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 through 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 therewith.

[0216] Furthermore, the second ejector 90 may be installed 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 may be combined with the first tray 40 as a reference. The assembled ice maker 30 may be mounted on the door 21. The screw 262 fastened from the rear of the mounting member 26 may be fastened to the tray mounting portion 43 to fix the ice maker 30. Furthermore, the additional screw 915 fastened from the rear of the mounting member 26 may be fastened to the screw boss 74 of the second ejector 90, so that the ice maker 30 may be more firmly combined.

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

[0219] Fig.21 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. The water supplied from the water supply pipe 640 is supplied to the water supply part 64 and can be supplied to the inside of the cell C through the cell extension part 422 through the water supply port 644 .

[0221] On the other hand, during the water supply, the second tray 50 may be in a state of being opened at a set angle. The water supply unit 64 may supply water to the second tray 50 through one of the plurality of first units 401, and when the second tray 50 is open, water may move from one unit C to another adjacent unit C in sequence 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 in a state in which the supplied water completely fills up the second unit 512 , the supplied water fills up to the second tray 50 without overflowing due to the lower wall 513 .

[0223] In the state where the set flow rate of water is supplied to the second tray 50, the second tray 50 is rotated clockwise to be closed for ice making. Furthermore, when the second tray 50 is closed, the upper wall 421 is inserted into the inner side of the lower wall 513 and connected to each other, and the water located on the inner side of the lower wall 513 flows into the interior of each upper wall 421, thereby filling the entire unit C.

[0224] Fig. 22 It is a cross-sectional view of the ice maker when it is in an 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 with the first tray 40 and is in Fig. 22 The state shown can then start the operation for ice making.

[0226] The second tray 50 may be closely attached to the first tray 40 by the elastic force of the elastic member 75 installed 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 the ice-making operation is started, cold air may be supplied to the ice maker 30 through the cold air flow inlet 232 of the ice-making chamber 23. Specifically, cold air may flow into the cold air guide 62 through the duct portion 63 connected to the cold air flow inlet 232. Furthermore, cold air may be discharged from the front to the rear through the cold air guide 62, and after passing through the upper portions of the plurality of first units 401, be discharged through the cover discharge port 661 on the back of the ice maker 30.

[0228] Furthermore, the top surface of the first portion 41 is cooled while the cold air passes through the cold air flow passage 600. If the upper portions of the plurality of first cells 401 and the cell extension 422 are cooled, the interior of each first cell 401 is also cooled due to conduction. Therefore, the interior of the entire first cell 401 formed in the first tray 40 can be uniformly cooled, and the water contained in the cell C can be frozen at a uniform speed.

[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. And, it can be recovered to the freezing chamber 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. Also, 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. In addition, the first ejector 80 remains located at the uppermost position of the guide groove 652 , and the first pin 82 remains located above the cover hole 611 and the unit extension 422 .

[0232] If the ice making operation is completed, the heater 48 can be operated. The heat generated in the heater 48 heats the upper part of the first unit 401, and the heat is evenly transferred to the entire first unit 401, so that ice can be easily separated from the first unit 401.

[0233] Fig.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, due to the driving of the motor unit 70, the second tray 50 rotates counterclockwise to open the unit C. The second tray 50 may be as shown in FIG. Fig.23 In addition, during the rotation of the second tray 50, the ice I attached to the first tray 40 and the second tray 50 may be separated and fall to the bottom.

[0235] In detail, when the ice I is attached to the first tray 40, the ice can be moved by the first ejector 80. 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 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, so that the ice I attached to the first unit 401 can be moved downward.

[0236] As another example, when the output of the heater 48 is large enough, the surface of the first unit 401 can be heated by the action of the heater 48 when the ice is moved, 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 I is attached to the second tray 50, the ice can be removed by the second ejector 90. If the second tray 50 rotates in the counterclockwise direction, the second pin 92 of the second ejector 90 is in contact with the bottom surface of the second tray 50.

[0238] At this time, the second tray 50 is formed of a material that can be elastically deformed. Therefore, when the second tray 50 is further rotated in the counterclockwise direction while the second pin 92 and the second tray 50 are connected, the second pin 92 presses the second unit 512 to deform it. As the second unit 512 is deformed, the ice I can be separated from the second unit 512. In addition, the plurality of second pins 92 can simultaneously deform the plurality of second units 512, so that all the ice I attached to the plurality of second units 512 can be removed.

[0239] The ice I removed from the ice maker 30 may fall downward and be stored in the ice pool 27. When the second tray 50 rotates, the full ice sensing member 71 rotates, thereby confirming whether the ice pool 27 is full of ice. If the full ice sensing member 71 determines that the ice pool 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. Fig.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. Hereinafter, with reference to the accompanying drawings, other embodiments of the present invention will be described in detail. Furthermore, a plurality of components not described below are the same as those of the aforementioned embodiments, so in order to avoid repeated descriptions, their detailed descriptions or illustrations may be omitted and described using the same reference numerals. That is, in the following, only the components that differ from the aforementioned embodiments will be described in detail.

[0242] Fig.24 1 is an exploded perspective view showing a coupling structure of a first tray according to a second embodiment of the present invention.

[0243] As shown in the figure, the ice maker 30 of the second embodiment of the present invention may have the same configuration as the first embodiment except for the first tray 40a. Also, the overall appearance of the first tray 40a in the assembled state may be the same as 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 formed separately and then coupled to each other. In addition, 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 portion 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 combined with the side of the first portion 41a. The tray first coupling portion 419 may be formed at the side end of the first portion 41a. In addition, 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 protruding toward the first portion 41 may be formed at the end of the third portion 442. 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. In addition, a threaded hole 4491 may be formed in the second coupling portion 449 of the tray.

[0249] In a state where the second coupling part 449 is inserted into the first coupling part 419 and fixed for the first time, the screws 4192 may be inserted through the plurality of threaded holes 4191, 4491 from above the second coupling part 449 to be fastened. The plurality of screws 4192 may be fastened.

[0250] The first tray 40 may be assembled by the firm combination of the first and second combining parts 419 and 449. Also, in a state where the first tray 40 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 40.

[0251] Fig.25 1 is an exploded perspective view showing a coupling structure of a first tray according to a third embodiment of the present invention.

[0252] As shown in the figure, the ice maker 30 of the third embodiment of the present invention may have the same configuration as the first embodiment except for the first tray 40b. Also, the overall appearance of the first tray 40b in the assembled state may be the same as that of the first embodiment.

[0253] The first pallet 40b of the third embodiment may be constructed by separately 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, and the pallet portion 41b 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. In addition, a sensor mounting portion 414 may be formed in the unit portion 41 b'.

[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. And, 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 part 4193 is inserted into the fourth coupling part 4195 and fixed for the first time, the screw 4197 may be inserted from above the third coupling part 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 the firm combination of the third combining portion 4193 and the fourth combining portion 4195. Also, 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] Fig.26 1 is an exploded perspective view showing the combination structure of the first tray and the motor unit according to the fourth embodiment of the present invention. Fig. 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, and a plurality of first units 401 forming the upper portion of the ice making unit C may be formed in the first portion 41. The first unit 401 is open downward. A unit extension portion 422 extending upward from the first portion 41 may be formed at the upper end of the first unit 401. The unit extension portion 422 may play a role of buffering water inflow when the first ejector 80 is in and out and a large amount of water is frozen.

[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 fix the ice maker 30. Also, an ejector mounting portion 45 for mounting the second ejector 90 may be formed at one end of the first tray 40c on which the tray mounting portion 43 is formed. Also, 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 combined with each other.

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

[0269] The coupling edge 444c may extend upward along the outer end of the coupling bottom surface 443c. Also, the coupling edge 444c may be formed at the remaining portion of the periphery 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 penetrate the coupling portion edge 444c. The coupling holes 445c may be in a plurality and may be spaced apart from each other. Furthermore, the coupling holes 445c may be formed at a position corresponding to the coupling protrusion 702c formed on the motor unit 70c.

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

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

[0274] If 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, so that the motor unit 70c can be fixedly mounted on one side of the first tray 40c.

[0275] Fig.28 is a perspective view of a first tray according to a fifth embodiment of the present invention.

[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, and a unit forming portion 42 may be formed in the first portion 41e. The unit forming portion 42 may form a first unit 401 constituting an upper portion of the ice making unit C, and may have a shape slightly recessed from the top surface of the first portion 41e. In addition, the unit forming portion 42 exposed to the top surface of the first portion 41e may be formed in an arc shape corresponding to the shape of each first unit 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 may be formed to have a width that can form a plurality of the unit forming portions 42 arranged in two rows. Therefore, the front-to-rear width of the first tray 40e may be formed to be smaller than that of the first tray of the aforementioned embodiment. Therefore, the cold air supplied to the first tray 40e may 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 fix the ice maker 30. In addition, an ejector mounting portion 45 for mounting the second ejector 90 may be formed at one end of the first tray 40e formed with the tray mounting portion 43. In addition, a first connecting portion 411e protruding downward 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 first embodiment described above. 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 width of the first tray 40e in the front-to-back direction, so that the ice maker 30 can have a compact structure as a whole. Therefore, the ice maker 30 can be arranged in the ice making chamber 23 having a limited space in the front-to-back direction, and the overall thickness of the refrigerator door 21 can be prevented from increasing.

[0283] Fig.29 is a three-dimensional diagram of a first tray according to a sixth embodiment of the present invention. Fig.30 1 is a diagram showing a flow state 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, and a unit forming portion 42 may be formed in the first portion 41f. The unit forming portion 42 may form a first unit 401 constituting an upper portion of the ice making unit C, and may have a shape slightly recessed from the top surface of the first portion 41. In addition, the unit forming portion 42 exposed to the top surface of the first portion 41 may be formed in an arc shape corresponding to the shape of each first unit 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 unit forming portion 42 may include a unit extension portion 422f. The unit extension portion 422f is formed at the upper end of the first unit 401 and may extend upwardly from the first portion 41. The unit extension portion may be formed to allow the first ejector to pass through. Furthermore, the unit extension portion may play a buffering role of accommodating a portion of water when a large amount of water is present 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 fix the ice maker 30. In addition, an ejector mounting portion 45 for mounting the second ejector 90 may be formed at one end of the first tray 40f formed with the tray mounting portion 43. In addition, a first connecting portion 411e protruding downward 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 installed 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 formed with a plurality of cover holes 611f; and a cold air guide portion 62 for guiding cold air to pass through the plurality of unit extension portions 422f. Furthermore, a duct portion 63 is formed at a side end of the cold air guide portion 62, so that a channel for the cold air flowing into the ice making chamber 23 may be formed.

[0291] The cover portion 61 may be formed with a plurality of cover holes 611 for the unit extension portion 422f to be inserted. Also, a cold air flow channel may be formed between the cover portion 61 and the first portion 41. Also, a cover outlet 661 may be formed on the back of the cover 60. Therefore, the cold air passing through the duct portion 63, the cold air guide portion 62, and the cover portion 61 may be discharged to the rear through the cover outlet 661.

[0292] The cold air passing through the cover 61 and the first portion 41 may contact and flow with the outer surface of the unit extension 422f. Therefore, the unit extension 422f may contact and be cooled by the cold air passing through the first tray 40f. The first tray 40f may be formed of a metal material, and due to heat conduction, the water inside the first unit 401 may be more effectively frozen. In addition, the unit extension 422f may be arranged on the cold air flow channel, and may also 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. As an 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 have different structures according to the flow pattern of the cold air.

[0294] The first inclined surface 4221f and the second inclined surface 4222f may guide the cold air guided by the cold 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 toward 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 rotation amounts based on each unit extension 422f. For example, the unit extension 422f ( Fig.30 The A region in the middle) can 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 may also be different from each other. Fig.30 The number and the inclination angle of the inclined unit extension portions 422f are merely examples and are not limited thereto.

[0298] Fig.31 is an exploded perspective view of the second tray of the seventh embodiment of the present invention. Fig.32 FIG. 1 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 a slight difference in the partial 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. In addition, a lower wall 513 may extend upward from the periphery of the tray member. In addition, 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 to each other, and may be deformed when contacting the second ejector 90 for moving 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 may be formed to surround a portion of the outer surface of the second unit 512. In addition, a heater 54 may be provided on the tray support 52. The heater 54 heats the second unit 512, and thus may be referred to as a lower heater. The heater 54 may be arranged along the periphery of the support hole 521.

[0304] As an example, a heater groove 5241 may be formed that is recessed along the periphery of the support member hole 521. The heater groove 5241 may be continuously formed to pass through the regions corresponding to the plurality of second units 512. Furthermore, the heater 54 may be inserted into the inner side of the heater groove 5241. Furthermore, when the tray support member 52 and the tray member 51 are combined, the heater 54 may be in contact with 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. In addition, due to the shape of the cell c formed by the first cells 401, spherical ice may be made.

[0306] In order to make transparent spherical ice, the heater 54 may be driven in a state where cold air for ice making is supplied after water is supplied. At this time, the heater 54 may be periodically turned on and off. Since the heater 54 heats the second tray 50g, ice may be formed from the upper part of the cell C and gradually formed downward. Therefore, bubbles generated in the ice formation inside the cell C may be concentrated at the lower part of the second tray 50g, that is, the lower end of the second cell 521, and the remaining part except for a part of the lower end of the ice where the bubbles are concentrated may form transparent ice.

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

[0308] Furthermore, in the case of providing the heater 54, the heater 48 for heating the first tray 40 in the first embodiment described above 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] On the other hand, the heater may also be operated when the ice is moved. The heater may be operated to move the ice when the ice is made. If the heater 54 is turned on, the surface of the ice can be melted by heating the second unit 512. When the surface of the ice is fully melted, the second tray 50g rotates and the tray member 51 is deformed by the second ejector 90, so that the ice can be separated from the second unit 512 more easily.

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

[0311] The second connection parts 522 may be formed on the left and right sides of the tray support 52, and 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. In addition, support protrusions 523 may be formed on the left and right sides of the tray support 52.

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

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

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

Claims

1. A refrigerator, wherein: include: The box body 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, formed of a metal material, fixed to the door, and formed with a plurality of first units; A second tray is formed of a material different from that of the first tray and has a plurality of second units formed thereon, wherein the plurality of second units open and close the first unit to form a space for making ice; and a motor unit, used for opening and closing the second tray; The first tray comprises: a first part, 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 which 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; The screws penetrate the mounting member and are 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 are connected to the interior of the respective first units and extend toward the first ejector; The first ejector passes through the unit extension to move ice from the first unit.

7. The refrigerator according to claim 1, wherein: A driving shaft and a plurality of unit combining protrusions are formed on the motor unit, the driving shaft is combined with the second tray, and the plurality of unit combining protrusions protrude in the same direction as the driving shaft; A coupling hole is formed in the second part for the unit coupling protrusion to be inserted into; 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 protruding toward the second tray is formed on two sides of the first portion that are separated from each other; The second tray includes a second connection portion protruding to be aligned with the first connection portion, and a 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 combined with the second connection portion 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 driving shaft of the motor unit to rotate.

10. The refrigerator according to claim 1, wherein: The first tray is provided with a second ejector, and the second ejector contacts the second unit when the second tray rotates to move ice from the second unit.

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