WO2024151097A1 - Refrigerator - Google Patents

Abstract

A refrigerator according to an embodiment comprises: an ice-making chamber for providing a space in which ice is made; a cooler for supplying coldness to the ice-making chamber; and an ice-making machine for forming an ice-making cell as a space in which water undergoes a phase change to ice by means of the coldness. The ice-making machine comprises: a first tray assembly having a first tray forming a part of the ice-making cell; a second tray assembly having a second tray forming another part of the ice-making cell; a heater for supplying heat to the ice-making cell; a temperature sensor for sensing the temperature of water or ice in the ice-making cell; a driver for generating driving power such that the second tray assembly is moved with regard to the first tray assembly; and a controller for controlling the heater and the driver. If the heater's operation starting condition is satisfied, the controller may operate the heater and then determine whether the driver's operation starting condition is satisfied. If the driver's operation starting condition is satisfied, the controller may operate the driver.

Description

refrigerator

This specification relates to refrigerators.

In general, a refrigerator is a home appliance that allows food to be stored at low temperatures in an internal storage space shielded by a door. The refrigerator can cool the inside of the storage space using cold air, thereby keeping the stored food in a refrigerated or frozen state.

Generally, an ice maker for making ice is provided in the freezer compartment of a refrigerator. The ice maker collects water supplied from a water source or a water tank in a tray and then cools the water to create ice. Ice produced by the ice maker may be stored in an ice bin. The user can open the freezer door, access the ice bin, and take out the ice stored in the ice bin.

A refrigerator is disclosed in Korea Patent Publication No. 2021-0005783 (hereinafter referred to as “Prior Document 1”), which is a prior document.

The refrigerator of Prior Document 1 includes a storage room where food is stored; a first tray assembly provided in the storage compartment and forming a part of an ice-making cell, which is a space where water changes phase into ice by the cold; a second tray assembly forming another part of the ice-making cell; Includes moving ice heaters and clear ice heaters.

In the case of Prior Literature 1, spherical ice can be created using the first and second tray assemblies, but there is a disadvantage that the user must open the door to use the ice.

In the case of Prior Document 1, one or more of the moving heater and the transparent ice heater may be turned off when operated for a set time or when the temperature detected by the temperature sensor is higher than the turn-off reference temperature. However, in the case of control such as in Prior Literature 1, there is a problem in that the driving unit operates while the ice tray is attached, causing the torque to increase or the ice to melt excessively, causing water to fall downward or change the shape of the ice during the moving process.

Chinese Patent Publication No. 114174740A (hereinafter referred to as “Priority Document 2”), which is a prior document, discloses an ice maker and an ice bank provided in the door of a refrigerator.

Ice stored in the ice bank may be taken out to the outside through a dispenser assembly. The ice maker includes an elastic mold that forms a cavity and is made of an elastic material, a heat exchanger connected to the elastic mold and for freezing water in the cavity, an elevating mechanism for easily discharging the ice from the cavity, and the elevating and lowering device. It includes a driving mechanism for driving the mechanism. The driving mechanism includes a motor and a rotating cam.

In the case of Prior Document 2, ice in the shape of a sphere cannot be created, and in a structure where the lifting mechanism presses the elastic mold from the bottom, there is a disadvantage that it is difficult for the ice to separate from the elastic mold and fall downward. In order to completely separate ice from the elastic mold, the vertical movement width of the lifting mechanism must be increased. In this case, the size of the rotating cam must be increased, which has the disadvantage of increasing the overall size of the ice maker.

One embodiment provides a refrigerator in which ice can be smoothly separated from an ice-making cell.

Alternatively or additionally, one embodiment provides a refrigerator in which an increase in torque of a driving unit is limited during a moving process.

Alternatively or additionally, an embodiment provides a refrigerator in which excessive ice melting during heater operation is reduced.

Alternatively or additionally, one embodiment provides a refrigerator capable of producing sphere-shaped ice in the door.

Alternatively or additionally, one embodiment provides a refrigerator in which produced ice can be easily withdrawn from a dispenser in the door.

A refrigerator according to one aspect may include an ice-making room that provides a space in which ice is created. The refrigerator may further include a cooler. The cooler may operate to supply or supply cold to the ice-making chamber.

The refrigerator may further include an ice maker. The ice maker may be placed in the ice making room. The ice maker may include a first tray assembly. The first tray assembly may form a part of an ice-making cell, which is a space where water changes phase into ice due to the cold. The ice maker may further include a second tray assembly. The second tray assembly may form another part of the ice making cell.

The first tray assembly may include a first tray. The second tray assembly may include a second tray.

The ice maker may further include a heater for supplying heat to the ice making cell. The ice maker may further include a temperature sensor for detecting the temperature of water or ice in the ice making cell. The ice maker may further include a driving unit that generates a driving force to move the second tray assembly relative to the first tray assembly. The ice maker may further include a control unit that controls the heater and the driving unit. If the operation start condition of the heater is satisfied, the control unit may operate the heater and then determine whether the operation start condition of the drive unit is satisfied.

The control unit may operate the driving unit when the operation start condition of the driving unit is satisfied.

The temperature sensor may detect temperature intermittently. The control unit may determine whether the operation start condition of the drive unit is satisfied based on a plurality of temperature values.

The control unit may compare a representative value in a first section after operation of the heater with a representative value in a second section after the first section to determine whether the operation start condition of the drive unit is satisfied.

The control unit may determine that the operation start condition of the drive unit is satisfied when the difference between the representative value of the first section and the representative value of the second section is 0.

The representative value of the first section may be a temperature value obtained in the first section. The representative value of the second section may be a temperature value obtained in the second section.

The representative value of the first section may be an average value of a plurality of temperature values obtained in the first section, or may be the maximum, minimum, or median value among the plurality of temperature values.

The representative value of the second section may be an average value of a plurality of temperature values obtained in the second section, or may be the maximum, minimum, or median value among the plurality of temperature values.

The length of the first section and the length of the second section may be the same.

The refrigerator may further include a memory that stores the temperature detected by the temperature sensor. After the first reference number of temperature values is stored in the memory, the control unit may determine that the starting condition of the driver is satisfied when the temperature values of the second consecutive reference number are the same.

After a predetermined time has elapsed after the heater starts operating, the control unit may determine whether the operation start condition of the driving unit is satisfied.

If the predetermined time elapses after the heater starts operating and the temperature detected by the temperature sensor is higher than the first reference temperature, the control unit may determine whether the operation start condition of the driving unit is satisfied.

After a predetermined time has elapsed after starting operation of the heater, if the temperature detected by the temperature sensor is higher than the limit temperature, the control unit may determine that the operation start condition of the driving unit is satisfied.

After the heater starts operating, if the temperature detected by the temperature sensor is higher than the first reference temperature, the control unit may determine whether the operation start condition of the driving unit is satisfied.

After the heater starts operating, if the temperature detected by the temperature sensor is higher than the second reference temperature that is higher than the first reference temperature, the control unit may determine that the operation start condition of the driver is satisfied.

After the heater starts operating, when the reference time elapses from the time the temperature detected by the temperature sensor reaches the reference temperature, the control unit may determine that the operating time condition of the driver is satisfied.

The refrigerator may further include a storage compartment separated from or in communication with the ice-making compartment. The reference temperature may be constant regardless of the target temperature of the storage compartment or may vary depending on the target temperature.

The reference time and the heating amount of the heater may vary depending on the target temperature.

A refrigerator according to another aspect includes a cabinet provided with a storage compartment; a door that opens and closes the storage compartment; A door sensor that detects opening and closing of the door; And it may include an ice maker provided in the cabinet or door.

The ice maker may include a first tray that forms part of an ice-making cell, which is a space where water changes phase into ice by cold, and a second tray that forms another part of the ice-making cell. The ice maker includes a heater for supplying heat to the ice-making cell, a temperature sensor for detecting the temperature of water or ice in the ice-making cell, and generating a driving force to move the second tray relative to the first tray. It may include a driving unit and a control unit that controls the heater and the driving unit.

The control unit may operate the heater when the operation start condition of the heater is satisfied. After the heater starts operating, if the door sensor does not detect the opening of the door, the control unit may determine whether the first condition is satisfied to determine the operation start condition of the driving unit. When the door sensor detects the door being opened, the control unit may determine whether a second condition is satisfied in order to determine a condition for starting the operation of the driving unit.

Whether or not the first condition is satisfied may be determined based on a plurality of temperature values intermittently detected by the temperature sensor.

The refrigerator may further include a memory that stores past temperature values used to determine when to start operation of the driving unit during a previous moving process. Whether the second condition is satisfied can be determined by comparing the temperature value detected by the temperature sensor with the past temperature value stored in the memory.

According to one embodiment, there is an advantage that ice can be smoothly separated from the ice-making cell.

According to one embodiment, the increase in torque of the driving unit during the moving process may be limited.

According to one embodiment, there is an advantage in that excessive melting of ice during the heater operation process is reduced.

According to one embodiment, there is an advantage in that spherical ice can be created in the door.

According to one embodiment, the generated spherical ice can be easily withdrawn from the dispenser on the door.

FIG. 1(A) is a front view of the refrigerator according to this embodiment, and FIG. 1(B) is a view showing one door of the refrigerator in a separated state.

Figure 2 (A) is a perspective view viewed from the front of the first refrigerating compartment door according to this embodiment, and Figure 2 (B) is a perspective view viewed from the rear of the first refrigerating compartment door according to this embodiment.

FIG. 3 (A) is a diagram showing a state in which the basket and filter are separated from the refrigerating compartment door, and FIG. 3 (B) is a diagram showing a state in which the ice-making compartment door and the cover member are separated from the first refrigerating compartment door.

Figure 4 is a cross-sectional view taken along line 4-4 in (A) of Figure 2.

FIG. 5(A) is a view showing a cold air duct connected to the door liner of this embodiment, and FIG. 5(B) is a view showing the ice-making chamber wall of the door liner of this embodiment.

Figure 6 is a view showing a state in which an ice maker is installed on a support member of this embodiment.

Figure 7 is a diagram showing the arrangement relationship between the ice maker and the cold air duct in this embodiment.

Figure 8 (A) is a perspective view of the ice maker according to this embodiment as seen from one upper side, and Figure 8 (B) is a perspective view of the ice maker according to this embodiment as seen from the other upper side.

Figure 9(A) is a front view of the ice maker of this embodiment, and Figure 9(B) is a perspective view of the ice maker of this embodiment viewed from below.

Figure 10 is an exploded perspective view of the ice maker according to this embodiment.

Figure 11 is an exploded front view of the ice maker according to this embodiment.

Figure 12 (A) is a perspective view of the first tray according to this embodiment as seen from the top, and Figure 12 (B) is a perspective view of the first tray according to this embodiment as seen from the bottom.

Figure 13 (A) is a perspective view of the first tray cover according to this embodiment as seen from the top, and Figure 13 (B) is a perspective view of the first tray cover according to this embodiment as seen from the bottom.

Figure 14 (A) is a perspective view of the second tray assembly according to this embodiment viewed from above. Figure 14 (B) is a perspective view of the second tray assembly according to this embodiment viewed from the bottom.

Figure 15 (A) is a perspective view of the second tray according to this embodiment as seen from one side, and Figure 15 (B) is a perspective view of the second tray according to this embodiment as seen from the other side.

16 is a control block diagram of a refrigerator according to this embodiment.

17 is a flowchart explaining a refrigerator control method according to this embodiment.

18 is a flowchart illustrating a method for determining whether the operation start condition of the driving unit is satisfied according to this embodiment.

Figure 19 is a cross-sectional view showing the ice maker at the water supply position of the second tray assembly of this embodiment.

Figure 20 is a cross-sectional view showing the ice maker in the ice making position of the second tray assembly of this embodiment.

Figure 21 is a cross-sectional view showing the ice maker with the second tray assembly moved to the full ice detection position during the ice moving process.

Figure 22 (A) is a cross-sectional view showing the ice maker in a state where the first bar of the second pusher is in contact with the second tray, and Figure 22 (B) is a state in which the second bar of the second pusher is in contact with the second tray. A cross-sectional view showing an ice maker in .

Figure 23(A) is a diagram showing a state in which the first bar of the second pusher presses the second tray in the moving position, and Figure 23(B) shows the second bar of the second pusher pressing the second tray in the moving position. Drawing showing pressurized state.

In this specification, at least one of component A and component B may be interpreted as including component A, component B, or component A+B. Additionally, at least one of component A or component B may be interpreted as including component A, component B, or component A+B.

FIG. 1 (A) is a front view of the refrigerator according to this embodiment, and FIG. 1 (B) is a view showing one door of the refrigerator in a separated state.

Figure 2 (A) is a perspective view viewed from the front of the first refrigerating compartment door according to this embodiment, and Figure 2 (B) is a perspective view viewed from the rear of the first refrigerating compartment door according to this embodiment. FIG. 3 (A) is a diagram showing a state in which the basket and filter are separated from the refrigerating compartment door, and FIG. 3 (B) is a diagram showing a state in which the ice-making compartment door and the cover member are separated from the first refrigerating compartment door.

1 to 3, the refrigerator 1 of this embodiment may include a cabinet 2. The cabinet 2 may be provided with a storage compartment. The refrigerator 1 may further include a door that opens and closes the storage compartment. The door may be movably connected to the cabinet 2.

The storage compartment may include a refrigerating compartment (18). The storage compartment may optionally or additionally include a freezer compartment (19). For example, in Figure 1 (B), the storage compartment is shown to include a refrigerator compartment 18 and a freezer compartment 19.

The door may include a refrigerating compartment door 5 that opens and closes the refrigerating compartment 18. The refrigerating compartment 18 can be opened and closed by one or more refrigerating compartment doors 5. The door may further include a freezer compartment door 30 that opens and closes the freezer compartment 19. The freezer compartment 19 can be opened and closed by one or more freezer doors 30.

Hereinafter, it will be described as an example that the refrigerating compartment 18 is opened and closed by the first refrigerating compartment door 10 and the second refrigerating compartment door 20.

At least one of the first refrigerating compartment door 10 and the second refrigerating compartment door 20 may include a dispenser 11 for dispensing water and/or ice. Of course, depending on the type of refrigerator, the freezer door 30 may be equipped with the dispenser 11.

At least one of the first refrigerating compartment door 10 and the second refrigerating compartment door 20 may include one or more ice makers 200.

If the refrigerator includes a plurality of ice makers, the types of ice produced by the plurality of ice makers may be the same or different. The size (or volume) of ice produced by a plurality of ice makers may be the same or different. The transparency of ice produced from a plurality of ice makers may be the same or different. In a plurality of ice makers, the structure for producing ice and the manner in which the produced ice is separated may be the same or different.

Hereinafter, an example in which the ice maker 200 is provided in the first refrigerating compartment door 10 will be described. Of course, if necessary, an ice maker may be provided in the second refrigerator door 20 or the freezer door 30. At this time, the dispenser 11 and the ice maker may be installed in the same door. Alternatively, it is possible for an additional ice maker to be provided in the refrigerating compartment 18 or the freezing compartment 19.

In Figure 1 (B), the refrigerator 1 is exemplarily shown as a bottom freezer type refrigerator. However, the idea of the present invention can be equally applied to a side-by-side type refrigerator or a top mount type refrigerator. Let me state that it is possible. In the case of a side-by-side type or top-mount type refrigerator, the freezer door may include an ice maker and a dispenser, or the refrigerator compartment door may include an ice maker and a dispenser.

The dispenser 11 may be located in the front of the first refrigerating compartment door 10. A portion of the dispenser 11 may be recessed to the rear to provide a space in which a container can be placed.

The dispenser 11 may discharge ice generated by the ice maker 200. At least a portion of the ice maker 200 may be located higher than the dispenser 11 .

The first refrigerating compartment door 10 may include an outer case 101. The outer case 101 may form the front exterior of the first refrigerating compartment door 10. The first refrigerating compartment door 10 may further include a door liner 102. The door liner 102 may be directly or indirectly connected to the outer case 101. The door liner 102 can open and close the refrigerating compartment 18.

When the outer case 101 and the door liner 102 are connected, an insulating space may be formed between the outer case 101 and the door liner 102. An insulating material may be provided in the insulating space. The insulation material may be formed by curing a foaming liquid injected from the outside. Alternatively, a vacuum insulator may be provided in the insulation space. It is also possible for an insulating material and a vacuum insulator to be provided together in an insulating space.

The refrigerator 1 may include an ice-making chamber 122 that provides a space where ice is produced. The ice making room 122 may be separated from the storage room or may be in communication with the storage room.

The ice-making chamber 122 may be provided in the first refrigerating chamber door 10, for example. The ice maker 200 may be located in the ice making room 122. For example, the door liner 102 may form the ice-making chamber 122. The ice-making chamber 122 may be formed as one surface of the door liner 102 is depressed toward the outer case 101.

The first refrigerating compartment door 10 may further include an ice bin 600 in which ice generated by the ice maker 200 is stored. Ice stored in the ice bin 600 may be discharged to the dispenser 11. The ice bin 600 may be accommodated in the ice making room 122 together with the ice maker 200. The ice bin 600 may be located below the ice maker 200.

Cold generated in the cooler 1020 (see FIG. 16) may be supplied to the ice making room 122. That is, the cooler 1020 may be configured to supply cold to the ice-making chamber 122. Alternatively, the cooler 1020 may be configured to supply cold to the ice-making chamber 122.

The cooler 1020 may include at least one of a refrigerant cycle and a thermoelectric element to cool the ice-making chamber 122. For example, cold air for cooling the freezing chamber 19 may be supplied to the ice making chamber 122 .

The refrigerator 1 has a supply passage 2a that guides the cold air of the freezer compartment 19 or the cold air of the space where the evaporator that generates cold air for cooling the freezer compartment 19 is located to the first refrigerator compartment door 10. ) may further be included. The refrigerator 1 may include a discharge passage 2b that guides cold air discharged from the first refrigerator compartment door 10 to the freezer compartment 19 or a space where the evaporator is located. The supply flow path (2a) and the discharge flow path (2b) may be provided in the cabinet (2).

The first refrigerating compartment door 10 may include a cold air inlet 123a. When the first refrigerating compartment door 10 is closed, the cold air inlet 123a may communicate with the supply passage 2a. The first refrigerating compartment door 10 may further include a cold air outlet 123b. When the first refrigerating compartment door 10 is closed, the cold air outlet 123b may communicate with the discharge passage 2b. The cold air inlet 123a may be formed on one side of the door liner 102. Although not limiting, one side of the door liner 102 faces the wall where the supply passage 2a is located in the refrigerating compartment 18 when the first refrigerating compartment door 10 is closed. The cold air outlet 123b may be formed on one side of the door liner 102. Although not limiting, one side of the door liner 102 faces the wall where the discharge passage 2b is located in the refrigerating compartment 18 when the first refrigerating compartment door 10 is closed.

The ice maker 200 can produce spherical ice. As used herein, “spherical shape” means not only a spherical shape but also a shape similar to a spherical shape geometrically.

The one side of the door liner 102 may include a first side portion 102a and a second side portion 102b having different widths in the front-back direction. The width of the second side portion 102b may be larger than the width of the first side portion 102a. At least one of the cold air inlet 123a and the cold air outlet 123b is of the door liner 102. It may be formed on the second side portion 102b. The second side portion 102b may protrude further toward the refrigerating compartment 18 than the first side portion 102a.

The first refrigerating compartment door 10 may further include an ice-making compartment door 130 that opens and closes the ice-making compartment 122 . The ice-making room door 130 may be an insulated door provided with an insulating material inside. The ice-making compartment door 130 may be rotatably connected to the first refrigerating compartment door 10 by a hinge.

Meanwhile, a basket 136 (first basket) capable of storing food may be connected to the ice-making room door 130. Of course, it is possible for the first refrigerating compartment door 10 to also be provided with a basket 137 (second basket). For example, the second basket 137 may be located below the first basket 136.

A parts space 123 in which parts are accommodated may be formed in the first refrigerating compartment door 10. The component space 123 may accommodate one or more of a valve 750 that controls the flow of water, a filter (not shown) that purifies water, and a water tank 700 that stores water. The component space 123 may be formed by the door liner 102. The first refrigerating compartment door 10 may further include a cover member 132 that covers the parts space 123. The component space 123 may be provided with a holder 125 to which the filter is coupled.

The cover member 132 may include an opening 133. The filter may be coupled to the holder 125 through the opening 133. The second basket 137 may cover the opening 133. When the second basket 137 is separated, the opening 133 may be exposed. The holder 125 may be exposed through the opening 133.

Figure 4 is a cross-sectional view taken along line 4-4 in (A) of Figure 2.

Referring to FIGS. 3 and 4 , the dispenser 11 may include a dispenser housing 11a. The dispenser housing 11a may form a space 11b. A container such as a cup may be placed in the space 11b. Water or ice may be discharged into the space 11b. At least a portion of the ice-making chamber 122 may overlap the component space 123 in the vertical direction.

The ice maker 200 may overlap the dispenser housing 11a in the vertical direction. The ice bin 600 may overlap the dispenser housing 11a in the vertical direction. As will be described later, the ice maker 200 may include a second pusher 530. The second pusher 530 may overlap the ice bin 600 in the vertical direction. The second pusher 530 may overlap the dispenser housing 11a in the vertical direction.

The ice bin 600 may include an ice discharge unit 630 that operates to discharge stored ice. For example, the ice discharge unit 630 may include a rotating member that rotates.

An ice chute 800 may be placed below the ice making room 122. The ice chute 800 can be opened and closed by the cap duct 820. An ice guide 840 may be located below the ice chute 800. The ice chute 800 may provide a passage through which ice moves. The ice chute 800 may guide ice discharged from the ice bin 600 to the ice guide 840. The ice guide 840 may provide a passage through which ice moves. The ice guide 840 may guide ice to the space 11b. The ice chute 800 may overlap at least a portion of the ice-making chamber 122 in the vertical direction. At least a portion of the ice chute 800 may overlap the ice maker 200 in the vertical direction.

The second pusher 530 may overlap the ice chute 800 in the vertical direction. The second pusher 530 may overlap the cap duct 820 in the vertical direction. The second pusher 530 may overlap the ice guide 840 in the vertical direction.

As will be described later, the ice maker 200 may further include a first pusher 510. The second pusher 530 may be located closer to the outer case 101 than the first pusher 510 . The horizontal distance between the second pusher 530 and the front of the outer case 101 may be shorter than the horizontal distance between the passage formed by the ice chute 800 and the front of the outer case 101.

The first pusher 510 may overlap the ice discharge unit 630 in the vertical direction. The first pusher 510 may overlap the ice chute 800 in the vertical direction. The first pusher 510 may overlap the ice guide 840 in the vertical direction.

The ice maker 200 may overlap the water tank 700 in the vertical direction.

Figure 5(A) is a diagram showing a cold air duct connected to the door liner of this embodiment, Figure 5(B) is a diagram showing the ice-making room wall of the door liner of this embodiment, and Figure 6 is a diagram showing the ice-making room wall of the door liner of this embodiment. This is a drawing showing the ice maker installed on the support member. Figure 7 is a diagram showing the arrangement relationship between the ice maker and the cold air duct in this embodiment.

Referring to FIGS. 5 to 7 , the door liner 102 may include an ice-making chamber wall 140 that forms the ice-making chamber 122 . The door liner 102 may further include a peripheral wall 102c. The peripheral wall 102c may be spaced apart from the ice-making chamber wall 140 on the outside of the ice-making chamber wall 140 .

The first refrigerating compartment door 10 may further include a cold air duct 900. The cold air duct 900 may guide cold air introduced through the cold air inlet 123a to the ice-making chamber 122. The cold air duct 900 may guide cold air from the ice-making chamber 122 to the cold air outlet 123b.

The cold air duct 900 may include a first duct 910 forming a first flow path. The first flow path may communicate with the cold air inlet 123a and the ice-making chamber 122. The cold air duct 900 may further include a second duct 920. The second duct 920 may form the first flow path together with the first duct 910.

A portion of the first duct 910 may be aligned with the cold air inlet 123a. A portion of the second duct 920 may contact the ice-making chamber wall 140. Although not shown, a first through hole 140a may be formed in the ice-making chamber wall 140. The first through hole 140a is a supply hole through which cold air is supplied to the ice making chamber 122. A portion of the second duct 920 may be aligned with the first through hole 140a. One surface of the second duct 920 may form the first flow path.

The cold air duct 900 may further include a third duct 930. The third duct 930 may form a second flow path. The second flow path may communicate with the cold air outlet 123a and the ice-making chamber 122. The third duct 930 may form the second flow path together with the second duct 920. For example, the other surface of the second duct 920 may form the second flow path. Although not shown, a second through hole 140b may be formed in the ice-making chamber wall 140. The second through hole 140b is an exhaust hole through which cold air is discharged from the ice making chamber 122. The second through hole 140b may be located below the first through hole. Another portion of the second duct 920 may be aligned with the cold air outlet 123b. A portion of the third duct 930 may be aligned with the second through hole 140b.

When the ice maker 200 is provided in the freezer door 30, the cold air duct 900 may be omitted.

The ice-making room wall 140 may include a front wall 141. The front wall 141 may be a wall facing the outer case 101. The ice-making chamber wall 140 may further include a first side wall 143. The ice-making chamber wall 140 may further include a second side wall 144 located opposite the first side wall 143. The cold air duct 900 may be located between the second side wall 144 and the peripheral wall 102c. The first through hole 140a and the second through hole 140b may be formed in the second side wall 144. The ice-making chamber wall 140 may further include an upper side wall 142. The ice-making chamber wall 140 may further include a lower side wall 148.

The first refrigerating compartment door 10 may further include a support member 150 on which the ice maker 200 is installed. The support member 150 may be installed on the ice-making chamber wall 140. As another example, part or all of the support member 150 may be formed integrally with the ice-making chamber wall 140. Alternatively, the support member 150 may be omitted and the ice maker 200 may be installed on the ice making chamber wall 140. In any case, the ice maker 200 can be described as being supported on the ice making room wall 140.

The support member 150 may include a first member 152. The first member 152 may extend in the vertical direction. The ice maker 200 may be installed on the first member 152. The first member 152 may include an installation member 155. The installation member 155 may be located on the upper side of the first member 152. For example, the first member 152 may be provided with a slot 154 through which a portion of the ice maker 200 passes. A motor assembly for driving the ice discharge unit 630 of the ice bin 600 may be mounted on the first member 152 .

The support member 150 may further include a second member 153. The second member 153 may extend from the first member 152 in the horizontal direction. The ice bin 600 may be seated on the second member 153. An ice hole 153a through which ice passes may be formed in the second member 153.

The ice maker 200 may further include a bracket 220 supported on the support member 150 or on the ice making chamber wall 140. When the ice maker 200 is directly supported on the ice making room wall 140, the ice maker 200 may be supported on the front wall 141.

Figure 8 (A) is a perspective view of the ice maker according to this embodiment as seen from one upper side, Figure 8 (B) is a perspective view of the ice maker according to this embodiment as seen from the other upper side, and Figure 9 (A) is a perspective view of the ice maker according to this embodiment from the other side. This is a front view of the ice maker of this embodiment, and Figure 9 (B) is a perspective view of the ice maker of this embodiment viewed from below. Figure 10 is an exploded perspective view of the ice maker according to this embodiment, and Figure 11 is an exploded front view of the ice maker according to this embodiment.

Referring to FIGS. 4 to 11 , the ice maker 200 may include a first tray assembly 201. The first tray assembly 201 may form a part of the ice making cell 203. The ice maker 200 may further include the second tray assembly 202. The second tray assembly 202 may form another part of the ice making cell 203. The ice-making cell 203 is a space where water changes phase due to cold.

A driving unit 480 may be mounted on one side of the bracket 220. The driving unit 480 may provide driving force to the second tray assembly 202. The first tray assembly 201 may be installed on the bracket 220. The second tray assembly 202 can move relative to the first tray assembly 201. For example, the second tray assembly 202 may move in a straight line, curve, or rotate.

The driving unit 480 may include a motor housing 481. The driving unit 480 may further include a motor accommodated in the motor housing 481 and a power transmission unit. A fastening portion 482 may be formed on the upper side of the motor housing 481. The fastening part 482 may be fastened to the bracket 220 by a fastening member. The driving unit 480 may be located adjacent to the first side wall 143. That is, the driving unit 480 may be located on the opposite side of the first through hole 140a (inlet hole) through which cold air flows.

The ice maker 200 may further include a full ice detection lever 550 for detecting whether the ice bin 600 is full of ice. One end of the full ice detection lever 550 may be connected to the driving unit 480. The other end of the full ice detection lever 550 may be connected to the bracket 220 .

The ice-making chamber wall 140 may be provided with a recess formed at a position corresponding to the driving unit 480. The depression may include a first depression 145a formed in the first side wall 143. The depression may further include a second depression 145b formed in the front wall 141.

The ice-making chamber wall 140 may further include a third recess 145c where a portion of the support member 150 is located. The third recessed portion 145c may be formed in the front wall 141. The third recessed portion 145c may be connected to the second recessed portion 145b.

The ice maker 200 may further include a cold guide. The cold guide may provide a passage for supplying cold to the ice-making cell 203. The cold guide may be provided outside the ice making cell 203. Hereinafter, it will be explained by taking as an example that the cold is cold air. The cold guide may include a cold air guide 270, for example. Therefore, all configurations described in the cold guide can be understood as configurations of the cold guide. In this specification, a passage for supplying cold to the ice-making cell 203 may be formed by the cold air guide, the first tray, and the first tray cover. Accordingly, at least a portion of each of the cold air guide, the first tray, and the first tray cover may serve as the cold guide.

The cold air guide 270 may be adjacent to or contact the second side wall 144. The cold air guide 270 may be a separate component from the first tray case, which will be described later, or may be a part of the first tray case.

The driving unit 480 may be located on the opposite side of the second side wall 144 or the cold air guide 270 with respect to the ice maker 200. Slots 146 and 147 through which one or more of a water pipe through which water flows and a connector (or wire) for connection to the ice maker 200 pass may be formed in the ice-making chamber wall 140. The slots 146 and 147 may be formed in the front wall 141.

A portion of the water may be phase-changed into ice while contained in a portion of the ice-making cell 203 formed by the first tray assembly 201. Another part of the water may be phase-changed into ice while being accommodated in another part of the ice-making cell 203 formed by the second tray assembly 202. When ice making is completed, some of the ice may contact the first tray assembly 201. When ice making is completed, another part of the ice may contact the second tray assembly 202.

The first tray assembly 201 may include a first tray 320. The first tray 320 may form a part of each of the plurality of ice making cells 203.

At least a portion of the first tray 320 may be made of a metal material to facilitate cold air transfer. The first tray assembly 201 may include a first tray case. The first tray case may include a portion that is in contact with the first tray 320 or supported by the first tray 320 .

The first tray case may further include a first tray cover 300. The first tray cover 300 may be combined with the first tray 320. The first tray cover 300 may be located on one side of the first tray 320.

The first tray 320 may be coupled to the bracket 220. For example, the first tray 320 may be coupled to the bracket 220 while the first tray cover 300 is coupled to one side of the first tray 320 . Alternatively, when the bracket 220 is omitted, the first tray 320 may be coupled to the support member 150 or the ice-making chamber wall 140.

The ice maker 200 may further include a heater 330 that provides heat to the ice making cell 203. For example, the first tray assembly 201 may include the heater 330.

The heater 330 may operate at least during the ice-making process after completion of ice-making to provide heat to the first tray 320. The heater 330 may function as a moving heater. The heater 330 may be in contact with the first tray 320 .

The first tray assembly 201 may include a heater case 340 (or heater cover).

The heater case 340 may include a portion that contacts the heater 330 or is supported by the heater 330 . The heater case 340 may cover the heater 330. The heater case 340 may be separate from the first tray cover 300 or may be formed integrally with the first tray cover 300.

The heater case 340 may press the heater 330 toward the first tray 320 . The heater case 340 may be located between the first tray 320 and the first tray cover 300. For example, the heater case 340 may be located above a portion of the first tray 320 and below a portion of the first tray cover 300.

The second tray assembly 202 may include a second tray 360. The second tray 360 may form a different part of each of the plurality of ice making cells 203.

At least a portion of the second tray 360 may be made of a deformable material so that ice can be easily separated.

The second tray assembly 202 may further include a second tray case. The second tray case may include a portion that contacts or supports the second tray 360.

The second tray case may include a second tray cover 350. A portion of the second tray cover 350 may be located closer to the first tray 320 than a portion of the second tray 360 . The second tray case may further include a second tray supporter 380. A portion of the second tray supporter 380 may be located farther from the first tray 320 than a portion of the second tray 360 .

The ice maker 200 may further include a water supply unit 240 for supplying water to the ice making cell. The water supply unit 240 may supply water to some of the ice-making cells among the plurality of ice-making cells. The water supply unit 240 may be installed on the bracket 220. The water supply unit 240 may be provided with a slot 242 through which a water pipe passes. The water supply unit 240 may include a through hole 241 through which water is discharged.

The cold air guide 270 may be installed on the bracket 220, the first tray 320, or the first tray cover 300, for example. The cold air guide 270 may guide cold air to the ice-making cell 203. The cold air guide 270 may contact the first tray assembly 201. The cold air guide 270 may contact one or more of the first tray 320 and the first tray cover 300.

A portion of the cold air guide 270 may be located on the opposite side of the driving unit 480 with respect to the first tray assembly 201. Cold air guided by the cold air guide 270 may flow in a direction close to the driving unit 480. By arranging the driving unit 480, the driving unit 480 can be prevented from acting as a flow resistance of cold air.

The ice maker 200 may further include a tray temperature sensor 710 for detecting the temperature of water or ice in the ice making cell. For example, the tray temperature sensor 710 may detect the temperature of the first tray 320. The tray temperature sensor 710 may be mounted on the first tray 320 . The tray temperature sensor 710 may be covered by an insulation member 720. The tray insulation member 720 can prevent cold air from directly contacting the temperature sensor 710.

The ice maker 200 may further include transmission units 420 and 421 for transmitting power of the driving unit 480. For example, the power of the driving unit 480 may be transmitted to the second tray assembly 202 by a plurality of transmission units 420 and 421. Among the plurality of transmission units 420 and 421, the first transmission unit 420 may be connected to the driving unit 480. The first transmission unit 420 may be coupled to one side of the second tray supporter 380. Among the plurality of transmission units 420 and 421, the second transmission unit 421 may be coupled to the other side of the second tray supporter 380.

The ice maker 200 may further include a shaft 410 coupled to each of the plurality of transmission units 420 and 421. The first delivery unit 420 may be movably supported on one side of the first tray 320 . The second transmission unit 421 may be movably supported on the other side of the first tray 320.

The materials of the delivery units 420 and 421 and the first tray 320 may be different. The transmission parts 420 and 421 may be, for example, injection-molded plastic products. An intermediate member 416 may be coupled to any one of the transmission units 420 and 421 and the first tray 320 to prevent direct friction between the two components made of different materials. For example, the intermediate member 416 may be coupled to the first tray 320. The transmission units 420 and 421 may pass through the intermediate member 416 and contact the intermediate member 416 .

The ice maker 200 may further include a first pusher 510 that presses the ice or the first tray assembly 201 during the ice moving process. The first pusher 510 may push the ice so that the ice is separated from the first tray 320 . For example, the first pusher 510 may penetrate the first tray cover 300 to push ice. The first pusher 510 may push ice through the first tray 320 .

The first pusher 510 may receive power from the driving unit 480. For example, the first pusher 510 may receive the power of the driving unit 480 transmitted to the second tray assembly 202.

The ice maker 200 may further include a pusher link 440. For example, a plurality of pusher links 440 may be connected to the first pusher 510. One side of the pusher link 440 may be connected to the first pusher 510, and the other side may be connected to the second tray assembly 202. For example, the other side of the pusher link 440 may be connected to the second tray supporter 380.

The ice maker 200 may further include an elastic member 460. One end of the elastic member 460 may be connected to the transmission units 420 and 421, and the other end may be connected to the second tray assembly 202. When the elastic member 460 is tensioned, the position of the transmission units 420 and 421 can be moved to the initial position due to the restoring force. The elastic member 460 may increase adhesion between the first tray assembly 201 and the second tray assembly 202 at the ice-making position. The other end of the elastic member 460 may be coupled to the second tray supporter 380.

The ice maker 200 may further include a second pusher 530 that presses the ice or the second tray assembly 202 during the ice moving process. The second pusher 530 may be installed on the bracket 220, for example. When the bracket 220 is omitted, the second pusher 530 may be installed on the support member 150 or the ice-making chamber wall 140.

The ice maker 200 may further include a full ice detection lever 550. The full ice detection lever 550 may include a lever body 552 extending in one direction. The full ice detection lever 550 may further include a first extension portion 553 extending from one end of the lever body 552. The full ice detection lever 550 may further include a second extension portion 554 extending from the other end of the lever body 552. The first extension part 553 may be connected to the driving part 480. The second extension 554 may be connected to the bracket 220.

The driving unit 480 may include an extension rib 484 inserted into the bracket 220 or penetrating the bracket 220 . For example, a plurality of extension ribs 484 may be arranged to be spaced apart in the horizontal or vertical direction. For example, the extended rib 484 may protrude from the motor housing 481.

Figure 12 (A) is a perspective view of the first tray according to this embodiment as seen from the top, and Figure 12 (B) is a perspective view of the first tray according to this embodiment as seen from the bottom.

Referring to FIG. 12, the first tray 320 may define a first cell 321 that is part of the ice making cell 203. The first tray 320 may include a first cell wall 322 forming the first cell 321 . For example, the first cell 321 may be formed in a hemispherical shape or a shape similar to a hemisphere.

The first tray 320 may include a first contact surface 322a that contacts the second tray 360. The first contact surface 322a may be one surface of the first cell wall 322.

For example, the first tray 320 may form a plurality of first cells 321. The plurality of first cells 321 may be arranged in a plurality of rows to increase the number while reducing the size of the ice produced. The plurality of first cells 321 may include a first cell portion 321a disposed in a first column and a second cell portion 321b disposed in a second column.

The first cell portion 321a may form a part of the first ice-making cells in the first row, and the second cell portion 321b may form a part of the second ice-making cells in the second row. The first and second rows may be arranged in the Y-axis direction in the drawing. For example, the Y-axis direction may be the front-to-back direction of the refrigerator or the front-to-back direction of the door.

The first row may include a plurality of first cell portions 321a. The second row may include a plurality of second cell portions 321b.

The first row may be located closer to the front wall 141 or the outer case 101 or the front of the door or the cold air guide 270 than the second row. The second row may be located closer to the ice-making chamber door 130 than the first row.

The number of first cell portions 321a may be the same as or different from the number of second cell portions 321b. In FIG. 12 , as an example, the number of first cell portions 321a is shown to be less than the number of second cell portions 321b.

One first cell portion 321a may be arranged to correspond to an area between two adjacent second cell portions 321b. Alternatively, one first cell portion 321a may be arranged to face the area between two adjacent second cell portions 321b. One ice-making cell in the first row (first cell portion) may overlap with two ice-making cells in the second row (second cell portion) adjacent to the one ice-making cell in the Y-axis direction.

The first tray 320 may further include through holes 323a and 323b that provide a passage for water or cold air. The number of through holes 323a and 323b may be the same as the number of first cells 321.

The first tray 320 may further include an auxiliary storage compartment 323d. The auxiliary storage compartment 323d allows water or cold air to pass through. The auxiliary storage compartment 323d may be located above the through holes 323a and 323b. The first tray 320 may further include an extension wall 323c. The extension wall 323c may extend upward around the through holes 323a and 323b to form the auxiliary storage compartment 323d. The extension wall 323c may extend from the first cell wall 322.

The auxiliary storage room 323d may be a space where ice is produced. Alternatively, the auxiliary storage compartment 323d may be a part of the ice making cell 203. When ice making is completed, the top of the ice may be located in or adjacent to the through holes 323a and 323b. Accordingly, the completed ice may have a spherical shape or may be almost similar to a spherical shape.

The auxiliary storage compartment 323d may store water excessively supplied to the ice-making cell 203. The auxiliary storage compartment 323d can store ice that expands during the phase change of supplied water.

The first tray 320 may further include an extension part. The extension may include a portion extending from the first cell wall 322. The extension may contact a portion of the cold air guide 270 or support the cold air guide 270.

The extension may include a portion spaced apart from the cold air guide 270. Cold air may flow in the space between the extension portion and the cold air guide 270.

The first tray 320 may further include a supporter 325 that supports the movement of the second tray assembly 202. For example, a plurality of supporters 325 may be arranged to be spaced apart in the X-axis direction. The supporter 325 may extend in one direction from the extension part.

The supporter 325 may include a hole 325a. For example, the transmission units 420 and 421 may be movably coupled to the supporter 325. For example, the transmission units 420 and 421 may be coupled to the supporter 325 to enable relative rotation. The intermediate member 416 is coupled to the hole 325a of the supporter 325, and the intermediate member 416 is installed in the supporter 325 to prevent the intermediate member 416 from rotating with respect to the supporter 325. A slot 325b into which a portion of 416 is inserted may be provided. The slot 325b may extend outward from the hole 325a.

The intermediate member 416 may be formed of a material different from that of the first tray 320. The entire first tray 320 may be made of the same material, or at least a portion may be made of a metal material.

The first tray 320 may be formed with a sensor mounting portion for mounting the tray temperature sensor 710. The sensor mounting portion may be formed in a recessed shape toward the second tray 360. The tray temperature sensor 710 may be accommodated in the sensor mounting portion.

The first tray 320 may further include a receiving portion 326a that accommodates the heat insulating member 8720 mounted on the temperature sensor 710.

The first tray 320 may further include a heater seating portion 329 on which the heater 330 is seated. For example, the heater seating portion 329 may be formed as a portion of the first tray 320 is depressed in the direction toward the second tray 360.

Figure 13 (A) is a perspective view of the first tray cover according to this embodiment as seen from the top, and Figure 13 (B) is a perspective view of the first tray cover according to this embodiment as seen from the bottom.

Referring to FIG. 13, the first tray cover 300 may include a first portion 301. At least a portion of the first portion 301 may be spaced apart from the first tray 320 . For example, at least a portion of the first portion 301 may be located above the first tray 320 . Cold air may flow between the first portion 301 and the first tray 320.

The first tray cover 300 may further include a second part 302 extending from one side of the first part 301. The second part 302 may extend from the first part 301 in a direction that intersects the first part 301 . For example, the second part 302 may extend from the first part 301 in a direction away from the first tray 320 .

The second portion 302 may cover the first pusher 510 in the ice making position. The second part 302 can minimize exposure of the first pusher 510. The second part 302 may be located between the first pusher 510 and the ice making room door 130.

The first tray cover 300 may further include a guide 303. The guide 303 extends from the first portion 301 and may provide a passage for the first pusher 510 to move. The guide 303 may extend from the first part 301 in a direction that intersects the first part 301 . The guide 303 may include a guide slot 303a.

The first tray cover 300 may further include a water supply hole 301a. The water supply hole 301a may be aligned with the through hole 241 of the water supply unit 240.

The first tray cover 300 may further include a communication hole 301b aligned with the auxiliary storage compartment 323d (or through hole 323a, 323b) of the first tray 320. For example, a plurality of communication holes 301b may be formed in the first portion 301.

The first tray cover 300 may further include a case contact portion 307. The case contact portion 307 may protrude from the first portion 301. The case contact portion 307 may contact the heater case 340. The case contact portion 307 may pressurize the heater case 340. For example, a plurality of case contact portions 307 may be arranged to be spaced apart in the front-back and left-right directions.

The first tray cover 300 may further include a pressing protrusion 308. The pressing protrusion 380 may press the insulation member 720. For example, a plurality of pressing protrusions 308 may protrude from the first portion 301.

Figure 14 (A) is a perspective view of the second tray assembly according to this embodiment viewed from above. Figure 14 (B) is a perspective view of the second tray assembly according to this embodiment viewed from the bottom.

Referring to FIG. 14, the second tray 360 may define a second cell 361, which is another part of the ice making cell. The second tray 360 may include a second cell wall 362 forming the second cell 361. For example, the second tray 360 may form a plurality of second cells 361. The plurality of second cells 361 may be arranged in a plurality of rows to increase the number while reducing the size of the ice produced.

The plurality of second cells 361 may include a first cell portion 361a disposed in a first column and a second cell portion 361b disposed in a second column. The first cell portion 361a may form another part of the first ice-making cells in the first row, and the second cell portion 361b may form another part of the second ice-making cells in the second row.

The first and second rows may be arranged in the Y-axis direction in the drawing. For example, the Y-axis direction may be the front-to-back direction of the refrigerator or the front-to-back direction of the door. The first row may include a plurality of first cell portions 361a. The second row may include a plurality of second cell portions 361b.

The first row may be located closer to the front wall 141 or the outer case 101 or the front of the door or the cold air guide 270 than the second row. The second row may be located closer to the ice-making chamber door 130 than the first row. One ice making cell in the first row may overlap with two ice making cells in the second row adjacent to the one ice making cell in the Y-axis direction. Since the second cell 361 in the second tray 360 may be arranged to correspond to the first cell 321 of the first tray 320, the detailed arrangement of the second cell 361 will be omitted. Do this.

The second tray 360 may be seated on the second tray supporter 380. When the second tray 360 is seated on the second tray supporter 380, a portion of the second tray 360 may penetrate the second tray supporter 380.

When the second tray 360 is seated on the second tray supporter 380, the second tray cover 350 may be seated on the second tray 360. A portion of the second tray 360 may penetrate the second tray cover 350.

The second tray supporter 380, the second tray 360, and the second tray cover 350 may be fastened at once by the fastening member S4. For example, the fastening member S4 may be fastened to the second tray supporter 380.

The second tray assembly 202 may further include a fixing member 390 (or a connecting member). Although it is not limited, when the second tray assembly 202 is divided into three areas in the X-axis direction (left and right directions), the fixing member 390 may be located in the central area.

During the moving process, the pressing force of the second pusher 530 may be applied to the second tray 360 having a plurality of second cells. The fixing member 390 can reduce the phenomenon in which the second tray 360, which has second cells arranged in a plurality of rows, cannot be restored to its original form after moving is completed.

The fixing member 390 may be seated on the second tray 360. When the fixing member 390 is seated on the second tray 360, a portion of the fixing member 390 may penetrate the second tray 360.

The fixing member 390 that penetrates the second tray 360 may contact the second tray supporter 380 or may penetrate the second tray supporter 380 .

The second tray supporter 380, the second tray 360, and the fixing member 390 may be fastened at once by the fastening member S5. For example, the fastening member S5 may be fastened to the lower side of the second tray supporter 380.

When the second tray cover 350 is seated on the second tray 360, one end (e.g., upper end) of the second tray 360 is one end (e.g., an upper end) of the second tray cover 350. It may be located further away from the second tray supporter 380 than the upper end). For example, the upper end of the second tray 360 may be positioned higher than the upper end of the second tray cover 350.

Figure 15 (A) is a perspective view of the second tray according to this embodiment as seen from one upper side, and Figure 15 (B) is a perspective view of the second tray according to this embodiment as seen from the other upper side.

Referring to FIG. 15, the second tray 360 may define a second cell 361, which is another part of the ice making cell. The second tray 360 may include a second cell wall 362 forming the second cell 361. For example, the second cell 361 may be formed in a hemispherical shape or a shape similar to a hemisphere. The first cell portion 361a may be positioned to correspond to an area between two adjacent second cell portions 361b or to face the area between two adjacent second cell portions 361b.

The second tray 360 may further include a peripheral wall 365. The peripheral wall 365 may extend from the second cell wall 362 toward the first tray 320 . The peripheral wall 365 may surround the first cell wall 322.

The peripheral wall 365 may include a curved wall 365a. The curved wall 365a may be located adjacent to the first cell portion 361a. The peripheral wall 365 may further include a straight wall 365b. For example, the straight wall 365b may be parallel to the Z axis. The straight wall 365b may be located adjacent to the second cell portion 361b.

The peripheral wall 365 may further include a connecting wall 365c connecting the straight wall 365b and the curved wall 365a. The connecting wall 365c may be rounded in the Z-axis direction. The curvature of the curved wall 365b may be different from the curvature of the connecting wall 365c. The curvature of the curved wall 365b may be greater than the curvature of the connecting wall 365c. The cover body 351 may surround the outer peripheral surface of the peripheral wall 365.

The second tray 360 may further include an extension portion 367. The extension portion 324 may extend from the second cell wall 362 or the peripheral wall 365. Alternatively, the extension portion 367 may extend from the boundary between the second cell wall 362 and the peripheral wall 365. The extension portion 367 may extend in a direction intersecting the peripheral wall 365.

The second tray cover 350 may be seated on one surface of the extension portion 367. The other surface of the extension portion 367 may be seated on the second tray supporter 380.

The first protrusion 368a may be formed on one surface of the extension portion 367. The second protrusion 368 may be formed on the other surface of the extension portion 367.

The first protrusion 368a may be bent one or more times in the horizontal direction. For example, the first protrusion 368a may include a first part and a second part that is inclined to the first part. The first protrusion 368a may be formed in a “V” shape, for example.

The second protrusion 368 may be bent one or more times in the horizontal direction. For example, the second protrusion 368 may include a first part and a second part that is inclined to the first part. The second protrusion 368 may be formed in a “V” shape, for example.

The other surface of the extension portion 367 may be provided with a third protrusion 369 to be coupled to the second tray supporter 380. For example, the third protrusion 369 may overlap the curved wall 365a in the Z-axis direction.

The second protrusion 368 may be located closer to the straight wall 365b than the curved wall 365a. The first protrusion 368a may be located adjacent to the second shell portion 361b. The second protrusion 368 may be located adjacent to the second cell portion 361b. The third protrusion 369 may be located adjacent to the first cell portion 361a.

The second tray 360 may further include a fixing groove 364 in which the fixing member 390 is accommodated. A portion of the fixing groove 364 may be located between two adjacent first cell portions 361a. Another part of the fixing groove 364 may be located between two adjacent second cell portions 361b.

The fixing member 390 may allow the second cell wall 362 and the second tray supporter 380 to be coupled within the space formed by the peripheral wall 365.

Figure 16 is a control block diagram of a refrigerator according to this embodiment.

Referring to FIG. 16, the refrigerator of this embodiment may include a cooler 1020.

The cooler 1020 may include, for example, a compressor to compress the refrigerant. The temperature of cold air supplied to the ice-making chamber 122 may vary depending on the output (or frequency) of the compressor. Alternatively, the cooler 1020 may include a fan for blowing air to the evaporator. The amount of cold air supplied to the ice-making chamber 122 may vary depending on the output (or rotation speed) of the fan. Alternatively, the cooler 1020 may include a refrigerant valve that adjusts the amount of refrigerant flowing in the refrigerant cycle. By adjusting the opening degree of the refrigerant valve, the amount of refrigerant flowing in the refrigerant cycle is varied, and the temperature of the cold air supplied to the ice-making chamber 122 may vary accordingly.

In this embodiment, the cooler 1020 may include one or more of the compressor, fan, and refrigerant valve.

The refrigerator of this embodiment may further include a control unit 1000.

The control unit 100 may be installed on or spaced apart from an object for control. The control unit 100 may be located inside or outside the object for control.

The control unit 1000 can control the heater 330. Optionally or additionally, the control unit 1000 may control the driving unit 480.

Optionally or additionally, the control unit 1000 may control the cooler 1020.

The refrigerator may include a tray temperature sensor 710 mounted on the first tray 320. The refrigerator may further include an ice-making chamber temperature sensor 1005 for detecting the temperature of the ice-making chamber 122.

The control unit 1000 may determine whether ice making is complete based on the temperature detected by the tray temperature sensor 710.

Based on the temperature detected by the tray temperature sensor 710, the control unit 1000 may determine when to start operation of the driver 480 during the moving process.

The refrigerator may further include a door sensor 1002. The door sensor 1002 can detect the opening and closing of the doors 5 and 30.

The refrigerator may further include a memory 1004. The tray temperature sensor 710 may detect temperature intermittently. The tray temperature sensor 710 can detect temperature at set time intervals. The temperature detected by the tray temperature sensor 710 may be stored in the memory 1004.

The memory 1004 may store the temperature value used to determine the starting point of operation of the driving unit 480 during the previous moving process.

Hereinafter, the operation of the ice maker 200 will be described.

FIG. 17 is a flowchart explaining a method for controlling a refrigerator according to this embodiment, and FIG. 18 is a flowchart explaining a method for determining whether the operation start condition of the driving unit is satisfied according to this embodiment.

FIG. 19 is a cross-sectional view showing the ice maker at the water supply position of the second tray assembly of this embodiment, and FIG. 20 is a cross-sectional view showing the ice maker at the ice-making position of the second tray assembly of this embodiment. Figure 21 is a cross-sectional view showing the ice maker in a state in which the second tray assembly is moved to the full ice detection position during the ice moving process.

Figure 22 (A) is a cross-sectional view showing the ice maker in a state where the first bar of the second pusher is in contact with the second tray, and Figure 22 (B) is a state in which the second bar of the second pusher is in contact with the second tray. This is a cross-sectional view showing the ice maker.

Figure 23(A) is a diagram showing a state in which the first bar of the second pusher presses the second tray in the moving position, and Figure 23(B) shows the second bar of the second pusher pressing the second tray in the moving position. This is a drawing showing the pressurized state.

Referring to FIGS. 16 to 23, the control unit 1000 may control the driving unit 480 to move the second tray assembly 202 to the water supply position, ice making position, full ice detection position, and ice moving position. . However, in a modified embodiment, the ice maker 200 may be designed so that the water supply position and the ice making position are the same.

The position of the second tray assembly 202 in FIG. 19 is the water supply position. The position of the second tray assembly 202 in FIG. 20 is the ice-making position. The position of the second tray assembly 202 in FIG. 21 is the full ice detection position. The position of the second tray assembly 202 in FIG. 23 is the moving position.

The second tray assembly 202 may move in a first direction from the water supply position to the ice making position. The first direction is clockwise in the drawing. The second tray assembly 202 may move from the ice-making position to the water supply position in a second direction opposite to the first direction. The second direction is counterclockwise in the drawing.

The second tray assembly 202 may move in the second direction from the water supply position to the full ice detection position. The second tray assembly 202 may move in the second direction from the full ice detection position to the moving position. The second tray assembly 202 may move in the first direction from the moving position to the water supply position.

Referring to FIG. 17, a water supply process may be performed at the water supply position of the second tray assembly 202 (S1). Water may be supplied to the ice-making cell 203 through the water supply unit 240.

At the water supply position of the second tray assembly 202, at least a portion of the second tray 360 may be spaced apart from the first tray 320. For example, the first cell 321 and the second cell 361 may be spaced apart.

The first row may be located closer to the rotation center C1 of the second tray assembly 202 than the second row. The distance between the second cell portion 321b of the first tray 320 in the second row and the second cell portion 361b of the second tray 360 is the first tray in the first row ( It may be greater than the distance between the first cell portion 321a of the second tray 360 and the first cell portion 361a of the second tray 360.

The first bar 513 of the first pusher 510 may separate ice from the ice-making cells 203 in the first row. The first bar 513 may push ice from the ice-making cells 203 in the first row. The second bar 514 may separate ice from the ice-making cells 203 in the second row. The second bar 514 may push ice from the ice-making cells 203 in the second row.

Each of the first bar 513 and the second bar 514 has a first edge 513b, 514b for pressing ice, and a second edge 513c located on the opposite side of the first edge 513b, 514b. , 514c). The first edges 513b and 514b may be located closer to the ice making cell 203 than the second edges 513c and 514c.

At the water supply position and/or the ice making position, the second part 302 of the first tray cover 300 may overlap the pusher body 511 in the horizontal direction.

When water supply is completed, the second tray assembly 202 can be moved to the ice-making position. When the second tray assembly 202 moves to the ice making position, the first tray 320 and the second tray 360 may come into contact. In this state, a complete ice-making cell 203 can be formed by the first cell 321 and the second cell 322. A portion of the water contained in the second tray 360 may be distributed to the first cell 321 of the first tray 320.

In the ice making position, a portion of the full ice detection lever 550 may be located below the second pusher 530 . For example, the lever body 552 may be located below the second pusher 530. At least a portion of the first extension 553 connected to the driving unit 480 may extend in a direction approaching the second pusher 530.

At the ice making location, an ice making process may be performed (S2). Cold air may flow through the cold air guide 270. Cold air flowing through the cold air guide 270 may flow between the first tray cover 300 and the first tray 320. In this embodiment, cold air may be supplied to the ice-making chamber 122 during the water supply process. Alternatively, cold air may be supplied to the ice-making chamber 122 only during the ice-making process. Cold air may be supplied to the ice-making chamber 122 even during the moving process. Air flowing through the cold air guide 270 may flow from the first row to the second row.

While the ice making process is being performed, the control unit 1000 can determine whether the ice making is complete (S3). The control unit 1000 may determine whether ice making is complete based on one or more of the temperature detected by the tray temperature sensor 710 and the time when cold air is supplied.

Once de-icing is completed, a moving process can be performed. The moving process may include a heating process in which the heater 330 operates (S4). That is, when the operation start conditions of the heater 330 are satisfied, the heater 330 can operate. The moving process may further include a moving process in which the second tray assembly 202 moves. During the movement process, the driving unit 480 operates.

When the heater 330 is turned on, heat from the heater 330 may be transferred to the ice making cell 203. Ice may be separated from the first tray 320 by the heat of the heater 330. Even while the heater 330 is operating, the temperature may be detected by the tray temperature sensor 710.

The control unit 1000 may determine whether the operation start condition of the driving unit 480 is satisfied while the heater 330 is operating (S5).

For example, the control unit 1000 may determine whether the operation start condition of the driver 480 is satisfied based on the temperature detected by the tray temperature sensor 710.

For example, the temperature detected periodically or intermittently by the tray temperature sensor 710 may be stored in the memory 1004. For example, after the heater 330 starts operating, one or more temperature values may be stored in the memory 1004 during the first section. One or more temperature values may be stored in the memory 1004 even in the second section after the first section. One or more temperature values may be stored in the memory 1004 in each of the plurality of sections after the second section. The length of time for each of the plurality of sections may be the same.

The control unit 1000 may determine whether the operation start condition of the driver 480 is satisfied by comparing representative values of the two sections (first determination method). For example, if the difference between the two representative values is 0, it may be determined that the operation start condition of the driving unit 480 is satisfied. In the section where ice changes phase into water in the ice-making cell 203, the difference between two representative values may be 0. In this embodiment, the movement process may begin in the section where ice changes phase into water in the ice-making cell 203. At this time, the length of time for each of the plurality of sections may be set to be smaller than the length of the section in which the phase changes. During the movement process, the driving unit 480 may start operating.

When one temperature value is stored in each section, the representative value may be the temperature value stored in each section.

When a plurality of temperature values are stored in each section, only temperature values that fall within the set temperature range can be used among the plurality of temperature values.

When a plurality of temperature values are stored in each section, the representative value may be an average of the temperature values in each section, the maximum or minimum value, or an intermediate value among the plurality of temperature values in each section.

When the plurality of temperature values are stored in each section, the length of each section may be set to a length that allows three or more temperature values to be stored.

The standard heating amount of the heater 330 may be determined in advance according to the target temperature of the storage compartment (freezer or refrigerator compartment). For example, the standard heating amount of the heater 330 when the target temperature is high is lower than the standard heating amount of the heater 330 when the target temperature is low. The length of the plurality of sections may vary depending on the target temperature.

As a modified example, the temperature periodically sensed by the tray temperature sensor 710 may be stored in the memory 1004. After the first reference number of temperature values is stored, the control unit 1000 may determine that the start condition of the driver 480 is satisfied when the temperature values of the second consecutive reference number are the same (second judgment method). At this time, the first reference number may be greater than the second reference number. While determining whether the operation start condition of the driver 480 is satisfied using the first or second determination method, if the temperature detected by the tray temperature sensor 710 is higher than the limit temperature, the driver 480 It can be determined that the operation start conditions of are satisfied. That is, even if the operation start condition of the driver 480 is not satisfied as a result of determination by the first or second determination method, if the temperature detected by the tray temperature sensor 710 is above the limit temperature, the driver 480 It can be determined that the operation start condition of 480 is satisfied.

As another modified example, the heater 330 starts to operate, and after a predetermined time has elapsed, it may be determined whether the operation start condition of the drive unit 480 is satisfied. Whether or not the operation start condition is satisfied can be determined using the first or second determination method described above.

At this time, when the predetermined time has elapsed and the temperature detected by the tray temperature sensor 710 is higher than the first reference temperature, it can be determined whether the operation start condition of the driver 480 is satisfied. At this time, the first reference temperature is a temperature below zero, for example, it may be -1°C or a temperature close thereto.

Alternatively, when the predetermined time has elapsed and the temperature detected by the tray temperature sensor 710 is higher than the second reference temperature (or limit temperature), it may be determined that the operation start condition of the driver 480 is satisfied. there is.

The limit temperature may be the upper limit of the set temperature range. The limit temperature may be greater than the first reference temperature. The limit temperature is, for example, the temperature of the image, and may be, for example, 1°C or a temperature close thereto.

As another modified example, when the heater 330 starts operating and the temperature detected by the tray temperature sensor exceeds the first reference temperature, it can be determined whether the operation start condition of the driver 480 is satisfied. there is. At this time, it can be determined whether the operation start condition is satisfied using the first determination method or the second determination method. While determining whether the operation start condition is satisfied using the first determination method or the second determination method, if the temperature detected by the tray temperature sensor 710 is higher than the second reference temperature, the driver 480 It can be determined that the operation start conditions of are satisfied.

As another modification, it is also possible to determine whether the operation start condition of the driver 480 is satisfied by comparing the temperature detected by the tray temperature sensor 710 with a preset judgment reference temperature during operation of the heater 330. do. After the driving unit 480 starts operating, the operating time of the driving unit 480 may be stored in the memory 1004. The operating time may be the same or different for each ice-making cycle.

The control unit 1000 may vary the judgment reference temperature by comparing the difference between the n+1 operation time and the n operation time. For example, when the difference value is +, the operation time of the n+1th operation is increased than the nth operation, and the judgment standard temperature can be increased. In this case, the operating time of the heater 330 may be increased. When the difference value is -, the judgment standard temperature can be lowered.

As another modified example, after the heater 330 operates, when the reference time elapses from the time the temperature detected by the tray temperature sensor 710 reaches the reference temperature, the operation start condition of the driver 480 is changed. It can be judged as satisfactory.

The standard heating amount of the heater 330 may be determined in advance according to the target temperature of the storage compartment (freezer or refrigerator compartment). For example, the standard heating amount of the heater 330 when the target temperature is high is lower than the standard heating amount of the heater 330 when the target temperature is low.

The reference temperature may be constant regardless of the target temperature or may vary depending on the target temperature. The reference time may vary depending on the target temperature. For example, the reference time may be determined by considering the section in which the phase change of ice to water is maintained.

If it is determined that the operation start conditions of the driving unit 480 are satisfied, the driving unit 480 may start operating (S6). When the moving process starts, the heater 330 may be turned off, or the moving process may be performed while the heater 330 is operating, and the heater 330 may be turned off during the moving process.

Meanwhile, in this specification, the step (S5) of determining whether the operation start condition of the drive unit 480 is satisfied is when the door sensor 1002 detects the opening of the door while the heater 330 is operating. It may include a step (S51) of determining whether it has been done.

If it is determined that the door is not open, the control unit 1000 can determine whether the first condition is satisfied (S52). The judgment of whether the first condition is satisfied is the same as the various judgment examples (first and second judgment methods, etc.) described above.

On the other hand, if it is determined that the door is open, the control unit 1000 can determine whether the second condition is satisfied (S52). For example, whether the second condition is satisfied can be determined based on the temperature value (past temperature value) used to determine the starting point of operation of the driving unit 480 in the previous moving process and the current temperature value.

While determining whether the first condition is satisfied, it may be detected that the door is opened while the first condition is not satisfied. In this case, after detecting the door opening, it is possible to determine only whether the second condition is satisfied. When the current temperature value reaches the past temperature value stored in the memory 1004, the control unit 1000 may determine that the operation start condition of the driver 480 is satisfied.

In the case of this embodiment, the method of determining whether the operation start condition of the driving unit 480 is satisfied may be different depending on whether the door is opened or closed.

As another example, it is also possible to determine only whether the first condition is satisfied regardless of whether the door is opened or closed.

During the movement process, the second tray assembly 202 may move in the second direction (direction of arrow A) from the ice-making position toward the moving position.

During the movement process, the full ice detection lever 550 may be moved by receiving power from the driving unit 480 while the second tray assembly 202 moves in the second direction. The full ice detection lever 550 may maintain a stopped state before the second tray assembly 202 is rotated to a certain angle in the second direction from the ice making position. The full ice detection lever 550 may be rotated when the second tray assembly 202 is rotated beyond the predetermined angle. At this time, the full ice detection lever 550 may be rotated in a first direction (direction arrow B) that is opposite to the rotation direction of the second tray assembly 202.

While the second tray assembly 202 is moved to the full ice detection position, the full ice detection lever 550 may also be moved to the full ice detection position. At this time, the lever body 552 may be spaced apart from the second tray assembly 202.

If full ice is not detected while the second tray assembly 202 is moved to the full ice detection position, the second tray assembly 202 may be further moved in the second direction toward the moving position. .

When the second tray assembly 202 is further moved while the full ice detection lever 550 is moved to the full ice detection position, the full ice detection lever 550 is also moved in the second direction to the initial position. You can return. Accordingly, interference between the full ice detection lever 550 and the second tray assembly 202 can be prevented.

Meanwhile, while the second tray assembly 202 is moving from the ice making position to the moving position, the bars 513 and 514 of the first pusher 510 are connected to the through holes 323a and 323b of the first tray 320. may be inserted into the first cell 321. In the process of inserting the bars 513 and 514 of the first pusher 510 into the first cell 321, the bars 513 and 514 of the first pusher 510 may pressurize ice.

The second pusher 530 may include a first bar 532. The second pusher 530 may further include a second bar 533. The first bar 532 may separate ice from the ice-making cells 203 in the first row. The second bar 533 may separate ice from the ice-making cells 203 in the second row.

While the second tray assembly 202 is being moved to the moving position, the first bar 532 of the second pusher 530 first contacts the second tray 360 as shown in (A) of FIG. 28. You can. The first bar 532 may be located closer to the vertical line V1 passing through the rotation center C1 than the second bar 533.

The distance between the first row in the second tray 360 and the rotation center C1 is different from the distance between the second row in the second tray 360 and the rotation center C1. Therefore, the positions of the first bar 532 and the second bar 533 need to be different with respect to the vertical line V1 passing through the center of rotation C1. The horizontal distance between the first bar 532 and the vertical line V1 may be shorter than the horizontal distance between the second bar 533 and the vertical line V1.

The first bar 532 may include a first pressure surface 532b. The first pressing surface 532b may pressurize a portion of the second tray 360 corresponding to the first row. The second bar 533 may include a second pressure surface 533b. The second pressing surface 533b may pressurize a portion of the second tray 360 corresponding to the second row.

The first pressure surface 532b may be inclined with respect to the vertical line V1. The second pressure surface 533b may be inclined with respect to the vertical line V1. The inclination angle of the first pressing surface 532b may be different from the inclination angle of the second pressing surface 533b. For example, the inclination angle of the first pressing surface 532b with respect to the vertical line may be smaller than the inclination angle of the second pressing surface 533b.

While the first bar 532 is in contact with the second tray 360, the second bar 533 may be spaced apart from the second tray 360. In this state, if the second tray assembly 202 is further moved in the second direction, the second bar 533 may contact the second tray 360 as shown in (B) of FIG. 22. The first bar 532 may be a part of the second cell wall 362 that forms the first row by pressing the first row in the second tray 360 and deformed.

Referring to FIG. 23, when the second tray assembly 202 is moved to the moving position, a portion of the second cell wall 362 forming the first row is deformed by the first bar 532 to form a second cell wall 362. One row of ice may be separated from the second tray 360. Additionally, another part of the second cell wall 362 forming the second row may be deformed by the second bar 533 so that the ice in the second row may be separated from the second tray 360.

In the moving position, the first edges (513b, 514b) of the first and second bars (513, 514) of the first pusher (510) penetrate the first cell (321) and It can be located outside of . For example, the first edges 513b and 514b may be positioned lower than the first tray 320 based on the drawing. According to this embodiment, ice can be sufficiently pressurized by the first edges 513b and 514b, so moving performance can be improved.

Ice separated from the second tray assembly 202 may fall downward and be stored in the ice bin 600.

After the second tray assembly 202 is moved to the moving position, it may be moved in the first direction toward the water supply position.

In this specification, the method of determining whether the operation start condition of the driving unit 480 is satisfied can be applied regardless of the location of the ice maker. For example, the same can be applied even when the ice maker is installed in a cabinet rather than a door.

Additionally, as long as the ice maker includes a first tray assembly and a second tray assembly, the method of determining whether the operation start condition of the drive unit 480 is satisfied can be applied as is even if the detailed structure is changed.

Claims (20)

An ice-making room that provides space for ice production; a cooler for supplying cold to the ice-making room; and It includes an ice maker that forms an ice-making cell, which is a space where water changes phase into ice due to the cold, The ice maker includes a first tray assembly including a first tray forming part of the ice making cell; a second tray assembly including a second tray forming another part of the ice-making cell; A heater for supplying heat to the ice-making cell, a temperature sensor for detecting the temperature of water or ice in the ice-making cell; a driving unit that generates a driving force to move the second tray assembly relative to the first tray assembly; It includes a control unit that controls the heater and the drive unit, If the operation start condition of the heater is satisfied, the control unit operates the heater and then determines whether the operation start condition of the drive unit is satisfied, A refrigerator that operates the driving unit when the operation start condition of the driving unit is satisfied. According to claim 1, The temperature sensor intermittently detects temperature, A refrigerator wherein the control unit determines whether an operation start condition of the drive unit is satisfied based on a plurality of temperature values. According to claim 2, The controller determines whether the operation start condition of the drive unit is satisfied by comparing a representative value in a first section after the heater starts operating with a representative value in a second section after the first section. According to claim 3, The control unit determines that the operation start condition of the drive unit is satisfied when the difference between the representative value of the first section and the representative value of the second section is 0. According to claim 3, The representative value of the first section is a temperature value obtained in the first section, and the representative value of the second section is a temperature value obtained in the second section. According to claim 3, The representative value of the first section is the average value of a plurality of temperature values obtained in the first section, or the maximum, minimum, or median value among the plurality of temperature values. According to claim 3, The representative value of the second section is the average value of a plurality of temperature values obtained in the second section, or the maximum, minimum, or median value among the plurality of temperature values. According to claim 3, A refrigerator wherein the length of the first section and the length of the second section are the same. According to claim 1, Further comprising a memory in which the temperature value detected by the temperature sensor is stored, After a first reference number of temperature values are stored in the memory, The control unit determines that the operation start condition of the drive unit is satisfied when the temperature values of the second consecutive reference numbers are the same. According to claim 1, A refrigerator wherein the control unit determines whether the operation start condition of the drive unit is satisfied after a predetermined time has elapsed after the heater starts operating. According to claim 10, When the predetermined time elapses after the heater starts operating and the temperature detected by the temperature sensor is higher than the first reference temperature, the control unit determines whether the operation start condition of the driving unit is satisfied. According to claim 10, After the predetermined time has elapsed after starting operation of the heater, if the temperature detected by the temperature sensor is higher than the limit temperature, the control unit determines that the operation start condition of the driving unit is satisfied. According to claim 1, After the heater starts operating, when the temperature detected by the temperature sensor becomes higher than the first reference temperature, the control unit determines whether the operation start condition of the driving unit is satisfied. According to claim 13, If the temperature detected by the temperature sensor is higher than the second reference temperature than the first reference temperature, the control unit determines that the operation start condition of the drive unit is satisfied. According to claim 1, A refrigerator in which the control unit determines that the operation start condition of the drive unit is satisfied when a standard time has elapsed from the time the temperature detected by the temperature sensor reaches the reference temperature after the heater starts operating. According to claim 15, It further includes a storage room partitioned from or in communication with the ice-making room, A refrigerator in which the reference temperature is constant regardless of the target temperature of the storage compartment or varies depending on the target temperature of the storage compartment. According to claim 16, A refrigerator in which the reference time and the heating amount of the heater vary depending on the target temperature. cabinets with storage compartments; a door that opens and closes the storage compartment; A door sensor that detects opening and closing of the door; and Including an ice maker provided in the cabinet or door, The ice maker includes a first tray forming part of an ice-making cell, which is a space where water changes phase into ice by cold; a second tray forming another part of the ice-making cell; A heater for supplying heat to the ice-making cell, a temperature sensor for detecting the temperature of water or ice in the ice-making cell; a driving unit that generates a driving force to move the second tray relative to the first tray; It includes a control unit that controls the heater and the drive unit, The control unit operates the heater when the operation start condition of the heater is satisfied, After starting operation of the heater, the control unit determines whether a first condition is satisfied to determine an operation start condition of the driving unit when the door sensor does not detect the opening of the door, A refrigerator that determines whether a second condition is satisfied in order to determine an operation start condition of the driving unit when the door sensor detects the opening of the door. According to claim 18, A refrigerator in which whether the first condition is satisfied is determined based on a plurality of temperature values intermittently detected by the temperature sensor. According to claim 18, It further includes a memory that stores past temperature values used to determine the starting point of operation of the driving unit in a previous moving process, A refrigerator in which whether the second condition is satisfied is determined by comparing the temperature value detected by the temperature sensor with the past temperature value stored in the memory.

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