KR20230132175A - Ice making apparatus and refrigerator - Google Patents

Abstract

The ice making device of this embodiment is provided in an ice making room and includes an ice making unit for generating ice; a cooling unit for cooling the ice making unit; a water supply unit for supplying water to the ice making unit during the ice making process; a moving unit for separating ice from the ice making unit during the moving process; and a controller for controlling the cooling unit, the water supply unit, and the moving unit, wherein the ice making unit includes a first tray having a first ice making cell and a second tray having a second ice making cell. And, the controller controls the ice making of one of the first tray and the second tray to be delayed from the ice making of the other tray.

Description

Ice making apparatus and refrigerator {Ice making apparatus and refrigerator}

This specification relates to ice making devices and refrigerators.

In general, a refrigerator is a home appliance that allows food to be stored at low temperature in an internal storage space shielded by the refrigerator door. It cools the inside of the storage space using cold air generated through heat exchange with the refrigerant circulating in the refrigeration cycle. It is designed to store stored food in optimal condition.

The refrigerator may be placed independently in a kitchen or living room, or may be stored in a kitchen cabinet.

Refrigerators are gradually becoming larger and more multi-functional in accordance with changes in eating habits and the trend of higher quality products, and refrigerators equipped with various structures and convenience devices that take user convenience into consideration are being released.

An automatic ice maker is disclosed in Japanese Patent Publication No. 5687018, which is a prior document.

The automatic ice maker includes an ice-making chamber for forming ice, an evaporator disposed above the ice-making chamber, a water dish disposed below the ice-making chamber and rotatably supported by a support shaft, and a lower side of the water dish. It may include an ice-making water tank assembled to the ice-making water tank, a supply pump connected to the ice-making water tank, a rotatable guide member located on one side of the ice-making water tank, and an ice storage compartment in which ice is stored.

In the ice-making process, water is supplied from a supply pump while the water dish closes the space of the ice-making chamber, and the water supplied to the ice-making cell can be cooled by an evaporator.

In the moving process, high-temperature gas is supplied to the evaporator to heat the ice-making cell, and at the same time, the water dish is tilted downward, and in the process of tilting the water dish downward, the guide member is rotated to cover the upper side of the water dish. do.

As the ice-making cell is heated, ice is separated from the ice-making cell, falls to the upper side of the guide member, and finally moves to the ice storage compartment.

However, in the case of prior literature, it only discloses technology for producing one type of ice, and does not disclose technology for producing different types of ice.

This embodiment provides an ice making device and a refrigerator capable of producing different types of ice.

Alternatively or additionally, an ice making device and a refrigerator are provided in which an ice making process can be performed simultaneously on a plurality of trays.

Optionally or additionally, an ice making device and a refrigerator in which different types of ice can be separated and stored are provided.

An ice making device according to one aspect is provided in an ice making room and may include an ice making unit for generating ice. The ice making device includes a cooling unit for cooling the ice making unit; It may further include a water supply unit for supplying water to the ice making unit during the ice making process. The ice making device may further include a moving unit for separating ice from the ice making unit during the moving process. The ice making device may further include a controller for controlling the cooling unit, the water supply unit, and the moving unit.

The ice making unit may include a first tray including a first ice making cell. The ice making unit may further include a second tray including a second ice making cell.

The type of ice produced in the first ice making cell may be different from the type of ice produced in the second ice making cell.

The controller may control ice making of one of the first tray and the second tray to be delayed compared to ice making of the other tray.

The ice making time of one of the trays may be shorter than the ice making time of the other tray.

The controller may control the water supply unit so that the water supply start time of one tray is delayed from the water supply start time of the other tray.

The controller may control the water supply unit so that water supply starts from the other tray, and when a first reference time elapses, water supply from the one tray starts.

The controller may control the water supply unit so that water supply to one of the trays starts and water supply to the trays ends when a second reference time has elapsed.

The ice making device may further include a temperature sensor for detecting the temperature of at least one of the first tray and the second tray.

The controller may control the water supply unit to start water supply to one tray when water supply starts from the other tray and the temperature detected by the temperature sensor is less than the first reference temperature.

The controller may control the water supply unit to stop water supply to the trays when water supply to one of the trays starts and the temperature detected by the temperature sensor is less than the second reference temperature.

The controller may control the water supply unit so that the amount of water supplied per unit time to one of the trays is less than the amount of water supplied per unit time to the other tray.

The controller may control the water supply unit so that the water supply time of one tray is shorter than the water supply time of the other tray.

The controller may control the water supply unit so that the number of times water is supplied to one of the trays is less than the number of times to supply water to the other tray.

The controller may control the cooling unit so that the timing of supplying cooling power to one of the trays is delayed from the timing of supplying cooling power to the other tray.

The controller may control the cooling unit so that supply of cooling power to the other tray begins and supply of cooling power to the one tray occurs when a first reference time has elapsed.

The controller may control the cooling unit so that the supply of cold power to one of the trays starts and the supply of cold power to the trays ends when a second reference time has elapsed.

The controller may control the cooling unit so that the amount of cold power supplied per unit time to one of the trays is less than the amount of cold power supplied per unit time to the other tray.

The controller may control the cooling unit so that the cooling power supply time of one tray is shorter than the cooling power supply time of the other tray.

The controller may control the cooling unit so that the number of times cooling power is supplied to one of the trays is less than the number of times cold power is supplied to the other tray.

When ice making of the first tray or the second tray is completed, the controller may operate the moving unit to separate ice from each of the first tray and the second tray.

An ice making device according to another aspect may be provided in an ice making room and include an ice making unit for generating ice. The ice making device may further include a cooling unit for cooling the ice making unit. The ice making device may further include a water supply unit for supplying water to the ice making unit during the ice making process. The ice making device may further include a moving unit for separating ice from the ice making unit during the moving process. The ice making device may further include a controller for controlling the cooling unit, the water supply unit, and the moving unit. The ice making unit may include a first tray including a first ice making cell. The ice making unit may further include a second tray including a second ice making cell.

The type of ice produced in the first ice making cell may be different from the type of ice produced in the second ice making cell.

The controller, after starting to supply cold power or start supplying water to each of the first tray and the second tray, causes the supply of cold power to end or the water supply to any one of the first tray and the second tray to end. The water supply unit or the cooling unit can be controlled.

The controller may operate the moving unit to separate ice from each of the first tray and the second tray when ice making of the other one of the first tray and the second tray is completed.

The controller may terminate the supply of water or cold power to one of the first and second trays when a first reference time elapses after ice making of each of the first and second trays begins.

The controller may terminate the supply of water or cold power to the other tray when a second reference time elapses after the supply of water or cold power to one of the trays is terminated.

The ice making device may further include a temperature sensor for detecting the temperature of at least one of the first tray and the second tray.

The controller, after ice making of each of the first tray and the second tray starts, if the temperature detected by the temperature sensor is less than the third reference temperature, supplies water to one of the first tray and the second tray. Alternatively, cooling power supply may be terminated.

After the supply of water or cold power to one of the trays is terminated, if the temperature detected by the temperature sensor is lower than the second reference temperature, the supply of water or cold power to the other tray may be terminated.

A refrigerator according to another aspect may include a cabinet having a storage compartment. The refrigerator includes a door that opens and closes the storage compartment; It may further include an ice-making room provided in the door or the cabinet. The refrigerator is provided in the ice-making room and may further include an ice-making unit for generating ice. The refrigerator may further include a cooling unit for cooling the ice making unit. The refrigerator may further include a water supply unit for supplying water to the ice making unit during the ice making process. The refrigerator may further include a moving unit for separating ice from the ice making unit during the moving process. The refrigerator may include a controller for controlling the cooling unit, the water supply unit, and the moving unit.

The ice making unit may include a first tray including a first ice making cell. The ice making unit may further include a second tray including a second ice making cell. The controller may control ice making of one of the first tray and the second tray to be delayed compared to ice making of the other tray.

The type of ice produced in the first ice making cell may be different from the type of ice produced in the second ice making cell.

According to this embodiment, different types of ice can be produced, and there is an advantage that the user can use various types of ice.

Additionally, since the ice-moving process is performed while ice-making is completed in a plurality of trays, ice in a perfect shape can be created and defective ice-moving can be prevented from occurring.

Additionally, since the moving process is performed simultaneously on the plurality of trays, the moving time can be reduced and moving defects can be reduced.

If the moving time is reduced, the cycle for creating ice for one time may be reduced. If the cycle is reduced, the amount of ice produced per day or for a set time may increase.

Additionally, since different types of ice can be stored separately, there is an advantage that users can easily use different types of ice.

1 is a perspective view of an ice making device according to this embodiment.
Figure 2 is a front view showing the door of the ice making device according to this embodiment in an open state.
Figure 3 is a cutaway view showing the inside of the ice making device according to this embodiment.
Figure 4 is a diagram showing the interior of the ice making device according to this embodiment.
Figure 5 is a diagram showing a water supply flow path in the ice making device according to this embodiment.
Figures 6 and 7 are diagrams showing water being supplied to the ice-making unit.
8 and 9 are perspective views showing the ice making unit and cooler of this embodiment.
Figure 10 is a diagram showing the arrangement of the first tray and the second tray.
11 is a control block diagram of the ice making device of this embodiment.
Figure 12 is a cross-sectional view showing the process in which water is supplied from the water supply unit to the ice-making unit during the ice-making process.
13 is a flowchart illustrating a control method of an ice making device according to the first embodiment of the present invention.
Figure 14 is a flowchart illustrating a control method of an ice making device according to a second embodiment of the present invention.
Figure 15 is a flowchart illustrating a control method of an ice making device according to a third embodiment of the present invention.
Figure 16 is a flowchart illustrating a control method of an ice making device according to a fourth embodiment of the present invention.
Figure 17 is a control block diagram of an ice making device according to a fifth embodiment of the present invention.
Figure 18 is a flowchart illustrating a control method of an ice making device according to a fifth embodiment of the present invention.
Figure 19 is a flowchart for explaining a control method of an ice making device according to a sixth embodiment of the present invention.
Figure 20 is a flowchart for explaining a control method of an ice making device according to the seventh embodiment of the present invention.
21 is a flowchart illustrating a control method of an ice making device according to an eighth embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through illustrative drawings. When adding reference numerals to components in each drawing, it should be noted that identical components are given the same reference numerals as much as possible even if they are shown in different drawings. Additionally, when describing embodiments of the present invention, if detailed descriptions of related known configurations or functions are judged to impede understanding of the embodiments of the present invention, the detailed descriptions will be omitted.

Additionally, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the component is not limited by the term. When a component is described as being "connected," "coupled," or "connected" to another component, that component may be directly connected or connected to that other component, but there is no need for another component between each component. It should be understood that may be “connected,” “combined,” or “connected.”

In this specification, the ice making device includes a tray forming an ice-making cell, which is a space where water changes phase into ice, a cooling unit for supplying cold to the ice-making cell, a water supply unit for supplying water to the ice-making cell, and It can include any or all of the controllers.

The ice making device may further include a moving unit.

The tray may include a first tray and a second tray for producing different types of ice.

The water supply unit may independently supply water to each of the first tray and the second tray.

The water supply unit may be configured to simultaneously supply water to the first tray and the second tray. Alternatively, the water supply unit may be movably configured to supply water to one of the first tray and the second tray and then change its position to supply water to the other tray.

Alternatively, each of the first tray and the second tray is configured to be movable, and the first tray can move toward the water supply unit to receive water, and then the second tray can move toward the water supply unit. It is also possible to receive water.

The cooling unit may be defined as a means for cooling the ice-making cell, including at least one of an evaporator (or cooler) and a thermoelectric element. The evaporator may be located adjacent to or in contact with the tray. Alternatively, cold air cooled by the cooling unit may be supplied to the tray and converted into water ice in the ice-making cell.

The cooling unit may cool the first tray and the second tray independently or simultaneously.

The cooling unit may optionally include a valve for controlling the flow of refrigerant, a fan for flowing cold air, or a damper for controlling the flow of cold air within the two spaces.

The controller may adjust the cooling power of the cooling unit. The cooling power of the cooling unit may be the output of a thermoelectric element, the amount of cold supplied to the tray, the output (or frequency) of the compressor, or the amount of refrigerant flowing into the evaporator. The cold may include at least cold air.

The moving unit includes a heater for heating the tray, a pusher for pressurizing at least a portion of the tray, a refrigerant pipe through which refrigerant flows inside to heat the tray, and a water supply mechanism for supplying water to the outside of the tray. , may include one or more driving units for moving at least a portion of the tray.

The moving unit may separate ice from each of the first tray and the second tray independently or simultaneously separate ice from the first tray and the second tray.

For example, the power of the driving unit is transmitted simultaneously to the first tray and the second tray, the heat from the heater or the refrigerant pipe is transmitted simultaneously to the first tray and the second tray, or the water is transmitted to the first tray and the second tray. Can be delivered simultaneously.

Figure 1 is a perspective view of an ice making device according to this embodiment, and Figure 2 is a front view showing the door of the ice making device according to this embodiment in an open state. Figure 3 is a cutaway view showing the inside of the ice making device according to this embodiment. Figure 4 is a diagram showing the interior of the ice making device according to this embodiment.

Referring to FIGS. 1 to 4, the ice making device 1 of this embodiment can be installed independently to produce ice.

The ice making device 1 may include a cabinet 10 that forms an external shape. The ice making device 1 may further include a door 20 connected to the cabinet 10.

The cabinet 10 may include an ice-making chamber 12 that forms ice. The cabinet 10 may further include a storage compartment 13 where ice is stored.

The ice-making chamber 12 and the storage chamber 13 may be partitioned by a partition member and communicate with each other through a communication hole in the partition member. Alternatively, the ice-making chamber 12 and the storage chamber 13 may be communicated without a partition member.

Alternatively, the ice-making chamber 12 may include the storage chamber 13, or the storage chamber 13 may include the ice-making chamber 12.

The cabinet 10 may include a front opening 102. The door 20 can open and close the front opening 102. For example, the door 20 may open and close the front opening 102 by rotating it.

When the door 20 opens the front opening 102, the user can access the storage compartment 13 through the front opening 102. The user can take out the ice stored in the storage compartment 13 to the outside through the front opening 102.

The ice making device 1 may further include an ice making unit 40 located in the ice making chamber 12 .

Ice generated in the ice making unit 40 may fall from the ice making unit 40 and be stored in the storage compartment 13.

The cabinet 10 may include an inner case 101 forming the ice-making chamber 12. The cabinet 10 may further include an outer case 110 disposed outside the inner case 101.

Although not shown, an insulating material may be provided between the inner case 101 and the outer case 100.

The inner case 101 may additionally form the storage compartment 13.

The ice-making chamber 12 may be formed on the upper side of the inner case 101.

The ice making unit 40 may be located close to the rear wall 101a of the inner case 101. When the ice making unit 40 is located close to the rear wall 101a of the inner case 101, the usability of the storage compartment 13 can be increased.

To facilitate the user's access to the storage compartment 13, ice produced in the ice making unit 40 may fall in a direction closer to the door 20.

The cabinet 10 may further include a machine room 18 divided from the storage room 13. For example, the machine room 18 may be located below the storage room 13.

Although not limited, a portion of the storage room 13 may be located between the ice making room 12 and the machine room 18. The volume of the storage room 13 may be larger than the volume of the ice-making room 12 and the volume of the machine room 18.

The machine room 18 may be placed outside the inner case 101.

The inner case 101 may include a bottom wall 104 that forms the bottom of the storage compartment 13. The machine room 18 may be located below the bottom wall 104.

The bottom wall 104 may be provided with a drain hole 105 for discharging water.

Part of the cooling unit may be located in the machine room 18. For example, the cooling unit may be a refrigerant cycle for circulating refrigerant.

The cooling unit may include a compressor 183, a condenser 184, an expander (not shown), and a cooler 50. The cooler 50 may be an evaporator through which refrigerant flows.

In this embodiment, the refrigerant cycle may be capable of switching the refrigerant path using a valve. In other words, it is possible for the refrigerant compressed in the compressor 183 to flow directly to the condenser 184 or to the evaporator by changing the refrigerant flow path. Although not limited, the refrigerant from the compressor 183 may flow to the evaporator during the moving process.

The compressor 183 and the condenser 184 may be located in the machine room 18. The machine room 18 may be equipped with a condenser fan 185 to allow air to pass through the condenser 184. The condenser fan 185 may be disposed between the condenser 184 and the compressor 183, for example.

A front grill 180 in which an air hole 182 is formed may be provided on the front of the cabinet 10. A plurality of air holes 182 may be formed in the front grill 180. The front grill 180 may be located below the front opening 102. When the door 20 closes the front opening 102, the door 20 may cover a portion of the upper side of the front grill 180.

The cooler 50 may include a refrigerant pipe through which refrigerant flows. At least a portion of the cooler 50 may be located in the ice-making chamber 12 .

At least a portion of the cooler 50 may be in contact with the ice making unit 40 . That is, the water supplied to the ice-making unit 40 may be phase-changed into ice by the low-temperature refrigerant flowing through the cooler 50. Alternatively, the cooler 50 may be located adjacent to the ice making unit 40.

A method in which the cooler 50 directly contacts the ice making unit 40 to generate ice may be referred to as a direct cooling method.

As another example, air that has exchanged heat with the cooler 50 is supplied to the ice-making unit 40, and the water in the ice-making unit 40 can be phase-changed into ice by the cooling air. The method of creating ice by supplying cooling air can be called an indirect cooling method or an air cooling method. In the case of the indirect cooling method, it is possible that the cooler 50 is not located in the ice-making chamber 12. However, additionally, a guide duct that guides the cooling air heat-exchanged with the cooler 50 to the ice-making chamber 12 may be provided.

In this embodiment, the ice making unit 40 may produce a single type of ice or at least two different types of ice.

Hereinafter, it will be described as an example that the ice making unit 40 produces at least two different types of ice.

The ice making unit 40 may include a first tray unit 410 for forming a first type of first ice (I1). The ice making unit 40 may further include a second tray unit 450 for forming a second type of ice (I2) different from the first type.

The first ice (I1) and the second ice (I2) may differ in one or more of shape, size, transparency, etc.

Hereinafter, the first ice (I1) is polygonal ice, and the second ice (I2) is spherical ice.

The storage compartment 13 may include a first storage space 132 and a second storage space 134 so that the two types of ice can be stored separately.

Ice generated in the first tray unit 410 may be stored in the first storage space 132. Ice generated in the second tray unit 450 may be stored in the second storage space 134.

Although not limited, the second storage space 134 may be defined by the ice bin 14. That is, the internal space of the ice bin 14 may serve as the second storage space 134. The ice bin 14 may be fixed or detachably coupled to the inner case 101.

The ice bin 14 may also be referred to as a partition member that divides the storage compartment 13 into the first storage space 132 and the second storage space 134.

The volume of the first storage space 132 may be larger than the volume of the second storage space 134. Although not limited, the size of the first ice (I1) stored in the first storage space (132) may be smaller than the size of the second ice (I2) stored in the second storage space (134).

The front of the ice bin 14 may be arranged to be spaced apart from the rear of the front opening 102 . The bottom surface of the ice bin 14 may be spaced upward from the bottom wall 104 of the storage compartment 13.

Accordingly, the first ice (I1) can be located below the ice bin (14). The first ice (I1) may also be located in front of the ice bin (14). The first ice I1 stored in the first storage space 132 may surround the ice bin 14.

The bottom wall 104 of the storage compartment 13 may form the floor of the second storage space 134.

The bottom wall 104 of the storage compartment 13 may be located lower than the lower end 102a of the front opening 102. The bottom surface of the ice bin 14 may be positioned higher than the bottom 102a of the front opening 102.

The ice bin 14 may be located adjacent to one side (left side in the drawing) of the left and right sides of the inner case 101. The second tray unit 450 may be located adjacent to one side. Accordingly, ice separated from the second tray unit 450 may be stored in the second storage space 134 of the ice bin 14. Ice separated from the first tray unit 410 may be stored in the first storage space 132 outside the second storage space 134.

When the amount of first ice stored in the first storage space 132 increases, the first ice is prevented from being unintentionally discharged through the front opening 102 when the door 20 is opened. , the cabinet 10 may further include the opening cover 16. The opening cover 16 may be rotatably disposed on the inner case 101. The opening cover 16 may cover a lower portion of the front opening 102.

The opening cover 16 can be accommodated inside the storage compartment 13 when the door 20 is closed. When the door 20 is opened, the upper end of the opening cover 16 may be rotated so that it protrudes outward from the storage compartment 13 .

The opening cover 16 may be elastically supported by, for example, an elastic member (not shown). When the door 20 is opened, the opening cover 16 can be rotated by the elastic member.

The opening cover 16 may be formed in a convex shape toward the door 20 . Accordingly, although not limited, the first ice may be filled in the first storage space 132 up to the top 16a of the opening cover 16.

When the opening cover 16 is rotated, a portion of the first ice is drawn out of the storage compartment 13 while being located within the convex portion of the opening cover 16, so that the user can easily collect the first ice. There are advantages that can be acquired.

Of course, it is also possible to omit the opening cover 16 by varying the height of the lower end 102a of the front opening 102.

The cabinet 10 may further include a guide 70 that guides the ice separated from the ice making unit 40 to the storage compartment 13 .

The guide 70 may be arranged to be spaced apart from the lower side of the ice making unit 40 . The guide 70 may guide the first ice (I1) separated from the first tray unit 410 and the second ice (I2) separated from the second tray unit 450.

For example, the guide 70 may include a first guide 710. The guide 70 may further include a second guide 730.

The first ice I1 separated from the first tray unit 410 may fall onto the first guide 710. The first ice (I1) may be moved to the first storage space (132) by the first guide (710).

The second ice I2 separated from the second tray unit 450 may fall onto the second guide 730. The second ice I2 may be moved to the second storage space 134 by the second guide 730.

The upper end of the ice bin 14 may be positioned adjacent to the lower end of the second guide 730 so that the second ice I2 is moved to the second storage space 134.

The ice making device 1 may further include a partition plate 80 to prevent the first ice and the second ice falling on the guide 70 from mixing. The partition plate 80 extends in the vertical direction and may be coupled to the guide 70 or the ice making unit 40.

Figure 5 is a diagram showing a water supply path in the ice making device according to this embodiment, and Figures 6 and 7 are diagrams showing water being supplied to the ice making unit.

Referring to FIGS. 5 to 7 , the ice making device 1 may include a water supply passage for guiding water supplied from the water supply source 302 to the ice making unit 40.

The water supply flow path may include a first flow path 303 connected to the water supply source 302. A water supply valve 304 may be provided in the first flow passage 303. By operating the water supply valve 304, the supply of water from the water supply source 302 to the ice maker 1 can be controlled. The supply flow rate when water is supplied to the ice maker 1 can be controlled by operating the water supply valve 304.

The water supply passage may further include a second passage 305 connected to the water supply valve 304. The second flow path 305 may be connected to the filter 306. The filter 306 may be located in the machine room 18, for example.

The water supply passage may further include a third passage 308 that guides the water that has passed through the filter 306.

The ice making device 1 may further include a water supply mechanism 320. The water supply mechanism 320 may be connected to the third flow path 308.

The water supply mechanism 320 may supply water to the ice making unit 40 during the water supply process.

The ice making device 1 may further include a water supply unit 330. The water supply unit 330 may supply water to the ice making unit 40 during the ice making process. The water supply unit 330 may store water supplied from the water supply mechanism 320 and supply it to the ice making unit 40 .

In this embodiment, the water supply mechanism 320 may be referred to as a first water supply unit, and the water supply unit 730 may be referred to as a second water supply unit.

The water supply mechanism 320 may be located above the ice making unit 40. Water supplied from the water supply mechanism 320 may fall into the ice making unit 40.

The water supply unit 330 may be located below the ice making unit 40.

The water supply unit 330 may be spaced apart from the water supply mechanism 320. The water supply unit 330 may store water supplied from the water supply mechanism 320 and supply it to the ice making unit 40 .

5 to 7, the dotted line shows the flow of water supplied from the water supply mechanism 320, and the solid line shows the flow of water supplied from the water supply unit 330.

The water supply unit 330 may include a water storage unit 350 in which water is stored. The ice making unit 40 may include one or more passage holes 426 through which water passes. The water supplied from the water supply mechanism 320 and dropped toward the ice-making unit 40 may be stored in the water storage unit 350 after passing through the passage hole 426. The guide 70 may be provided with a plurality of through holes through which water passing through the ice making unit 40 passes.

When the water supply valve 304 is turned on, the water supplied from the water supply mechanism 320 falls into the ice-making unit 40, passes through the ice-making unit 40, and is stored in the water storage unit 350. You can.

The water storage unit 350 may be provided with a water level detection unit 356 that detects the water level. When the water level of the water storage unit 350 detected by the water level detection unit 356 reaches the reference water level, the water supply valve 304 may be turned off.

In this specification, the process from when the water supply valve 304 is turned on to when the water supply valve 304 is turned off may be referred to as a water supply process. For example, the water supply valve 304 may be turned off when the water level of the water storage unit 350 detected by the water level detection unit 356 reaches the reference water level.

The water supply unit 330 may further include water pumps 360 and 362 for pumping water stored in the water storage unit 350.

In the ice-making process in this embodiment, the water pumps 360 and 362 pump the water stored in the water storage unit 350 and supply it to the ice-making unit 40.

The water pumps 360 and 362 may include a first pump 360. The water pumps 360 and 362 may further include a second pump 362. When the first pump 360 operates, water may be supplied to the first tray unit 410. When the second pump 362 operates, water may be supplied to the second tray unit 450.

The first pump 360 and the second pump 362 may operate independently. The pumping capacities of the first pump 360 and the second pump 362 may be the same or different. The pumping capacity of each of the first pump 360 and the second pump 362 may be variable.

The water supply unit 330 may further include first connection pipes 352 and 354 connecting each of the pumps 360 and 362 and the water storage unit 350.

The first connection pipes 352 and 354 may be connected to the water storage unit 350 at the same or similar height to the bottom of the water storage unit 350.

The water supply unit 330 may further include a first water supply unit 380 for supplying water pumped by the first pump 360 to the first tray unit 410.

The water supply unit 330 may further include a second water supply unit 382 for supplying water pumped by the second pump 362 to the second tray unit 450.

The first water supply unit 380 may supply water to the first tray unit 410 from the bottom to the top.

The second water supply unit 382 may supply water to the second tray unit 450 from the bottom to the top of the second tray unit 450 .

The first water supply unit 380 and the second water supply unit 382 may be located below the guide 70.

The water supply unit 330 may further include second connection pipes 370 and 372 connecting each of the pumps 360 and 362 and each of the water supply units 380 and 382.

The water supplied from the first water supply unit 380 to the first tray unit 410 can be used to create ice. The water that falls again from the first tray unit 410 may be stored in the water storage unit 350 after passing through the guide 70.

The water supplied from the second water supply unit 382 to the second tray unit 450 can be used to create ice. The water that falls again from the second tray unit 450 may be stored in the water storage unit 350 after passing through the guide 70.

A drain pipe 360 may be connected to the water storage unit 350. The drain pipe 360 may extend through the drain hole 105 into the machine room 18. The machine room 18 may be provided with a drain tube 362 connected to the drain tube 360. The drain tube 362 can ultimately discharge water to the outside of the ice making device 1.

Hereinafter, the ice making unit 40 will be described in detail.

FIGS. 8 and 9 are perspective views showing the ice making unit and cooler of this embodiment, FIG. 10 is a view showing the arrangement of the first tray and the second tray, FIG. 11 is a control block diagram of the ice making device of this embodiment, and FIG. 12 is a cross-sectional view showing the process in which water is supplied from the water supply unit to the ice-making unit during the ice-making process.

Referring to FIGS. 8 to 12 , the cooler 50 may contact the ice making unit 40 . For example, the cooler 50 may be located on the upper side of the ice making unit 40.

The ice making unit 40 may include a first tray unit 410 and a second tray unit 450 as described above.

The first tray unit 410 and the second tray unit 450 may be arranged in a horizontal direction. The first tray unit 410 and the second tray unit 450 may be installed in the cabinet 10 while being connected to each other. That is, the first tray unit 410 and the second tray unit 450 can be modularized.

As another example, the first tray unit 410 and the second tray unit 450 may be installed in the cabinet 10 in a separated state. The first tray unit 410 and the second tray unit 450 may be positioned close to each other in the horizontal direction.

The first tray unit 410 may include a first ice making cell 440.

In this embodiment, the ice-making cell refers to a space where ice is created. One ice can be created in one ice-making cell.

The first tray unit 410 may include a first tray. The first tray may include a lower tray body 420. The first tray may further include an upper tray body 430 coupled to the lower tray body 420.

For example, the first tray may form a plurality of first ice-making cells 440. A plurality of upper tray bodies 430 may be coupled to the lower tray body 420.

The first ice making cell 440 may be defined by one cell or by a plurality of cells. For example, the first ice making cell 440 may include one side cell and the other side cell. Although not limited, the one side cell may be the first lower cell 441. The other cell may be the first upper cell 442.

The first lower cell 441 may be formed by the lower tray body 420. The first upper cell 442 may be formed by the upper tray body 430.

For example, the lower tray body 420 may form a plurality of first lower cells 441. Each of the plurality of upper tray bodies 430 may form a first upper cell 442.

Accordingly, when the plurality of upper tray bodies 430 are coupled to a single lower tray body 420, a plurality of first ice making cells 440 can be formed.

The lower tray body 420 may include a first lower opening 423. The first lower opening 423 communicates with the first lower cell 441.

The number of first lower openings 423 is the same as the number of first ice making cells 440.

The first lower cell 441 may form the lower exterior of the first ice. The first upper cell 442 may form the upper exterior of the first ice.

After the upper tray body 430 is coupled to the lower tray body 420, separation of the upper tray body 430 from the lower tray body 420 may be restricted.

Water supplied from the first water supply unit 380 may pass through the first lower opening 423 and be supplied to the first ice making cell 440. Accordingly, the first lower opening 423 may serve as a water supply opening during the ice-making process.

A portion of the water supplied to the first ice making cell 440 may fall to the lower part of the first tray unit 410 through the first lower opening 423. Accordingly, the first lower opening 423 may serve as a water discharge opening during the ice-making process.

Ice generated in the first ice-making cell 440 may be separated from the first tray unit 410 through the first lower opening 423 during the ice-making process. Accordingly, the first lower opening 423 may serve as an ice discharge opening during the moving process.

Each of the first lower cell 441 and the second lower cell 442 may be formed, for example, in a hexahedral shape. The volume of the first lower cell 441 and the volume of the second lower cell 442 may be the same or different.

After the first ice is generated in the first ice-making cell 440, the horizontal perimeter (or horizontal cross-sectional area) of the first lower cell 441 is adjusted so that the ice can be discharged through the first lower opening 423. ) may be larger than the horizontal perimeter (or horizontal cross-sectional area) of the first upper cell 442.

That is, the upper tray body 430 and the lower tray body 420 remain coupled during the water supply process, ice making process, and moving process, so that the shape of the first ice making cell 440 can be maintained.

The cooler 50 may be in contact with the upper tray body 430 so that ice is first generated in the first upper cell 442.

The lower tray body 420 may include passage holes 421 and 425 for water to pass through.

The second tray unit 450 may further include a second tray forming a second ice-making cell 451.

The second tray may be defined by one tray or by multiple trays. For example, the second tray may include one side tray and the other side tray. Although not limited, the second tray may include an upper tray 460 (or first tray portion). The second tray may include a lower tray 470 (or a second tray portion) movably connected to the upper tray 460.

The second ice making cell 451 may be defined by one cell or by a plurality of cells. For example, the second ice making cell 451 may include one side cell and the other side cell. Although not limited, the one side cell may be the second upper cell 462. The other cell may be the second lower cell 472.

The upper tray 460 may form the second upper cell 462. The lower tray 470 may form the second lower cell 472. Each of the second upper cell 462 and the second lower cell 272 may be formed in a hemispherical shape, for example.

For example, the second tray may form a plurality of second ice-making cells 451. Accordingly, the upper tray 460 may form a plurality of second upper cells 462. The lower tray 470 may form a plurality of second lower cells 472.

A portion of the first ice making cell 440 may be located at the same height as the second ice making cell 451. For example, at least a portion of the first ice making cell 440 may be arranged to overlap the second ice making cell 451 in the horizontal direction.

The second ice making cell 451 may be disposed between the rotation center C1 of the lower tray 470 and the first ice making cell 440.

The height of the top of the first ice making cell 440 and the top of the second ice making cell 451 may be different. For example, the top of the first ice making cell 440 may be located lower than the top of the second ice making cell 451.

The height of the lower end of the first ice making cell 440 and the lower end of the second ice making cell 451 may be different. For example, the lower end of the first ice making cell 440 may be positioned higher than the lower end of the second ice making cell 451.

The contact surface of the upper tray 460 and the lower tray 470 may have a different height from the joining portion of the upper tray body 420 and the lower tray body 430. For example, the contact surface of the upper tray 460 and the lower tray 470 may be positioned higher than the joining portion of the upper tray body 420 and the lower tray body 430.

The height of the first ice making cell 440 and the height of the second ice making cell 451 may be different. For example, the height of the first ice making cell 440 may be smaller than the height of the second ice making cell 451.

The maximum horizontal perimeter of the first ice making cell 440 may be different from the maximum horizontal perimeter of the second ice making cell 451. For example, the maximum horizontal perimeter of the first ice making cell 440 may be smaller than the maximum horizontal perimeter of the second ice making cell 451.

The number of first ice making cells 440 may be different from the number of second ice making cells 451. For example, the number of first ice making cells 440 may be greater than the number of second ice making cells 451.

The volume of the first ice making cell 440 may be different from the volume of the second ice making cell 451. The volume of the first ice making cell 440 may be smaller than the volume of the second ice making cell 451.

The sum of the volumes of the plurality of first ice-making chambers 440 may be different from the sum of the volumes of the plurality of second ice-making cells 451. For example, the sum of the volumes of the plurality of first ice-making chambers 440 may be greater than the sum of the volumes of the plurality of second ice-making cells 451.

The lower tray 470 may include a second lower opening 473.

A water supply process and an ice-making process may be performed while the upper tray 460 and the lower tray 470 are in contact with each other to form the second ice-making cell 451.

Water supplied from the second water supply unit 382 may pass through the second lower opening 473 and be supplied to the second ice making cell 451. Accordingly, the second lower opening 473 may serve as a water supply opening during the ice-making process.

Some of the water supplied to the second ice making cell 451 may fall to the lower part of the second tray unit 450 through the second lower opening 473. Accordingly, the second lower opening 473 may serve as a water discharge opening during the ice-making process.

During the moving process, the lower tray 470 may be rotated relative to the upper tray 460.

The first lower opening 423 and the second lower opening 473 may be located at different heights. For example, the first lower opening 423 may be located higher than the second lower opening 473.

The second tray unit 450 may further include an upper case 452 supporting the upper tray 460.

A portion of the upper tray 460 may penetrate the upper case 452 from the upper side. Another part of the upper tray 460 may be seated on the upper case 452.

A driving unit 690 for rotating the lower tray 470 may be installed in the upper case 452.

The upper case 452 may include a peripheral portion 453. The peripheral portion 453 may be provided with a seating end 454. The seating end 454 may be seated on the first tray unit 410. For example, the seating end 454 may be seated on the lower tray body 420.

The upper case 452 may be formed with a passage hole 456 for water to pass through.

The second tray unit 450 may further include a lower supporter 480 that supports the lower tray 470.

With the lower tray 470 seated on the lower supporter 480, the lower supporter 480 and the lower tray 470 may be rotated together. For example, the lower supporter 480 may be rotatably connected to the upper tray 460.

The lower supporter 480 may include a supporter opening 482a through which water passes. The supporter opening 482a may be aligned with the second lower opening 473.

The diameter of the supporter opening 482a may be larger than the diameter of the second lower opening 473.

The second tray unit 450 may further include a pusher 490 for separating ice from the lower tray 470 during the moving process. The pusher 490 may be installed on the upper case 452, for example.

The pusher 490 may include a pushing bar 492. When the lower tray 470 and the lower supporter 480 are rotated during the moving process, the pushing bar 492 penetrates the supporter opening 482a of the lower supporter 480 and presses the lower tray 470. can do. When the lower tray 470 is pressed by the pushing bar 492, the shape of the lower tray 470 is deformed and the second ice may be separated from the lower tray 470. To enable deformation of the lower tray 470, the lower tray 470 may be formed of a non-metallic material. In terms of ease of deformation, the lower tray 470 may be formed of a flexible material.

Meanwhile, the cooler 50 may include a first refrigerant pipe 510 that is in contact with the first tray unit 410 or located adjacent to the first tray unit 410.

The cooler 50 may further include a second refrigerant pipe 520 located adjacent to or in contact with the second tray unit 450.

The first refrigerant pipe 510 and the second refrigerant pipe 520 may be connected in series or in parallel. Hereinafter, an example in which the first refrigerant pipe 510 and the second refrigerant pipe 520 are connected in series will be described.

The first refrigerant pipe 510 may include the first inlet pipe 511. The first inlet pipe 511 may be located below the lower tray body 420. The first inlet pipe 511 may extend at a position adjacent to the driving unit 690. The first inlet pipe 511 may extend from the rear of the driving unit 690. That is, the first inlet pipe 511 may extend in the space between the driving unit 690 and the rear wall 101a of the inner case 101.

The first refrigerant pipe 510 may further include a first bent pipe 512 extending upward from the first inlet pipe 511.

The first coolant pipe 510 may further include a first cooling pipe 513 extending from the first bent pipe 512.

The first cooling pipe 513 may be in contact with the upper surface of the upper tray body 430. Accordingly, the upper tray body 430 can be cooled by the refrigerant flowing through the first cooling pipe 513.

The first cooling pipe 513 may include a plurality of straight portions 513a. The first cooling pipe 513 may further include a curved connecting portion 513b connecting ends of two adjacent straight portions 513a.

The first inlet pipe 511 may be located adjacent to the boundary between the first tray unit 410 and the second tray unit 450. The first cooling pipe 513 may extend from the boundary portion in a direction away from the second tray unit 450.

One straight portion may contact the upper surfaces of the plurality of upper tray bodies 430.

The plurality of straight portions 513a may be arranged at substantially the same height.

The first coolant pipe 510 may further include a first connection pipe 514 extending from an end of the first cooling pipe 513. The first connection pipe 514 may extend to be lower in height than the first cooling pipe 513.

The first refrigerant pipe 510 may further include a second cooling pipe 515 connected to the first connection pipe 514. The second cooling pipe 515 may be located lower than the first cooling pipe 513.

The second cooling pipe 515 may contact the side of the upper tray body 420.

The second cooling pipe 515 may include a plurality of straight portions 515a and 515b. The second cooling pipe 515 may further include a curved connecting portion 515c connecting two adjacent straight portions 515a and 515b.

The plurality of upper tray bodies 530 may be arranged in a plurality of columns and rows.

Among the plurality of straight parts 515a and 515b, some straight parts 515a may contact one side of the upper tray body 430 of one row. Among the plurality of straight parts 515a and 515b, some other straight parts 515b may contact the upper tray bodies 430 of two adjacent rows, respectively.

For example, some of the straight portions 515a may contact the first side of the upper tray body of the first row. For example, the other straight portions 515b may contact the second side of the upper tray body in the first row and the first side of the upper tray body in the second row.

The first refrigerant pipe 510 may further include a first discharge pipe 516. The first discharge pipe 516 may extend from the end of the second cooling pipe 515. The first discharge pipe 516 may extend toward the second tray unit 450. The height of the first discharge pipe 516 may be variable in the direction in which it extends.

The second refrigerant pipe 520 may receive refrigerant from the first discharge pipe 516. The second refrigerant pipe 520 may be a pipe formed integrally with the first discharge pipe 516 or may be a pipe combined with the second discharge pipe 516.

The second refrigerant pipe 520 may include a second inlet pipe 522 connected to the first discharge pipe 516. The second inlet pipe 522 may be located on the opposite side of the driving unit 690 in the second tray unit 450.

The second coolant pipe 520 may further include a third cooling pipe 523. The third cooling pipe 523 may extend from the second inlet pipe 522.

A portion of the second refrigerant pipe 520 (for example, the third cooling pipe 523) may be positioned higher than the top of the second ice-making cell 451.

The third cooling pipe 523 may contact the upper tray 460. Therefore, the upper tray 460 can be cooled by the refrigerant flowing through the third cooling pipe 523. For example, the third cooling pipe 523 may contact the upper surface of the upper tray 460.

The water supply mechanism 320 may be positioned higher than the third cooling pipe 523.

The third cooling pipe 523 may include a plurality of straight portions 523a. The third cooling pipe 523 may further include a curved connecting portion 523b connecting two adjacent straight portions 523a.

One or more of the plurality of straight portions 523a may extend in a direction parallel to the arrangement direction of the plurality of second ice making cells 451. The plurality of straight portions 523a may overlap the second ice-making cell 451 in the vertical direction. Some of the plurality of straight portions 523a may overlap the second lower opening 473 in the vertical direction.

The third cooling pipe 523 may be positioned higher than the first cooling pipe 513 and the second cooling pipe 515.

The second coolant pipe 520 may further include a second bent pipe 524 extending from the end of the third cooling pipe 523. A portion of the second bent pipe 524 may extend from the end of the third cooling pipe 523 along one side of the driving unit 690.

Another part of the second bent pipe 524 may extend downward.

The second refrigerant pipe 520 may further include a second discharge pipe 525 connected to the second bent pipe 524. At least a portion of the second discharge pipe 525 may extend parallel to the first inlet pipe 511. The second discharge pipe 525 may be located behind the driving unit 690. That is, the second discharge pipe 525 may extend in the space between the driving unit 690 and the rear wall 101a of the inner case 101.

At least a portion of the second discharge pipe 525 may be arranged in a vertical direction with the first inlet pipe 511.

At least a portion of the second discharge pipe 525 may overlap the first inlet pipe 511 in a vertical direction. At least a portion of the second discharge pipe 525 may be located above the first inlet pipe 511.

Meanwhile, the water supply mechanism 320 may include a first supply unit for supplying water to the first tray unit 410. The water supply mechanism 320 may further include a second supply unit for supplying water to the second tray unit 450.

The second supply unit may receive water from the first supply unit. For example, the second supply unit may extend from a point of the first supply unit.

The first supply unit may be located above the first refrigerant pipe 510. The second supply unit may be located above the second refrigerant pipe 520.

In this embodiment, the water supply mechanism 320 may supply water to the ice making unit 40 during the water supply process. The water supply mechanism 320 may supply water to the ice-making unit 40 during the moving process.

When ice making is completed in the ice making unit 40, the ice making unit 40 may be maintained at a temperature below zero. The water supply mechanism 320 may supply water supplied from an external water supply source 302 to the ice making unit 40 . Since the water supplied from the external water supply source 302 is at room temperature or at a temperature similar to room temperature, water is supplied from the water supply device 320 to the ice making unit 40 during the ice-making process in order to increase the temperature of the ice making unit 40. can be supplied.

Meanwhile, the ice making device 1 may further include a controller 190. The controller 190 may control the water supply valve 304 during the water supply process.

The controller 190 may control one or more of the compressor 183 and the condenser fan 185 (or fan driver) during the ice making process.

The controller 190 may control the first pump 360 and/or the second pump 362 during the ice making process. The controller 190 can independently control the first pump 360 and the second pump 362.

The controller 190 can control the moving unit during the moving process. For example, the moving unit may include one or more of the water supply mechanism 320 and the refrigerant pipes 510 and 520. The controller 190 may control water discharge from the water supply mechanism 320 by controlling the water supply valve 304 during the moving process. The controller 190 may control the switching valve to allow high-temperature refrigerant to flow into the refrigerant pipes 510 and 520 during the moving process.

The ice making device 1 may further include a first temperature sensor 191 for detecting the temperature of the first ice making cell 440 or the temperature around the first ice making cell 440.

The ice making device 1 may further include a second temperature sensor 192 for detecting the temperature of the second ice making cell 451 or the temperature around the second ice making cell 441.

The controller 190 may determine whether ice making in the first tray unit 410 is complete based on the temperature detected by the first temperature sensor 191.

The controller 190 may determine whether ice making in the second tray unit 450 is complete based on the temperature detected by the second temperature sensor 192.

Hereinafter, a series of processes by which ice is created in an ice-making unit will be described.

Figure 13 is a flowchart for explaining a control method of an ice making device according to the first embodiment of the present invention.

Referring to FIGS. 1 to 13, the process of generating ice in the ice making device 1 will be described.

The process for generating ice may include a water supply process (S11). The process for generating ice may further include an ice-making process (S12 to S17). The process for generating ice may further include a moving process (S18).

When the water supply process starts (S11), the water supply valve 304 is turned on and water supplied from the external water supply source 302 flows along the water supply passage. The water flowing along the water supply passage is supplied to the ice-making unit 40 through the water supply mechanism 320.

The water supplied to the ice making unit 40 falls to the lower side of the ice making unit 40 and is stored in the water storage unit 350. When the level of water stored in the water storage unit 350 reaches the reference level, the water supply valve 304 may be turned off to end the water supply process.

After the water supply process is completed, the ice-making process begins.

In the ice-making process, the cooling unit operates and low-temperature refrigerant may flow into the cooler 50. For example, the compressor 183 and the condenser fan 185 may be turned on (S12). Of course, the compressor 183 and the condenser fan 185 may be turned on before the ice-making process and remain turned on during the ice-making process.

In the ice-making process, water may be supplied to the ice-making unit 40 by the water supply unit 330.

In this embodiment, the time at which ice is created in the first tray unit 410 and the time at which ice is created in the second tray unit may be different.

In this embodiment, the moving unit may operate to simultaneously separate ice from the first tray unit 410 and the second tray unit 450. That is, the moving process for the first tray unit 410 and the moving process for the second tray unit 450 may be performed simultaneously.

In order for the ice-making process to be performed simultaneously in the two tray units 410 and 450, the ice-making completion time in the two tray units must be the same or similar.

In this embodiment, for example, water is supplied first to the tray unit that has a long ice-making time, so that the ice-making completion time in the two tray units 410 can be the same or similar.

Hereinafter, the description will be made assuming that the ice-making time in the second tray unit 450 is longer than the ice-making time in the first tray unit 410.

The controller 190 may first turn on the second pump 362 (S13).

The difference between the ice making time in the second tray unit 450 and the ice making time in the first tray unit 410 may be stored in a memory (not shown).

The ice making time of the first tray unit 410 and the second tray unit 450 may be determined through multiple experiments and stored in the memory.

Based on the difference in ice-making time, the difference in operating times (first reference time) of the first pump 360 and the second pump 362 may be determined.

When the second pump 362 is turned on, water can be supplied to the second tray unit 450 through the second water supply unit 382.

The second water nozzle 383 is located below the second tray unit 450. Accordingly, water sprayed upward from the second water nozzle 383 is supplied to the second ice making cell 451 of the second tray unit 450.

The water sprayed upward from the second water nozzle 383 is used to make the second ice through the supporter opening 482a of the lower supporter 480 and the second lower opening 473 of the lower tray 470. It may be supplied to the cell 451.

The water supplied to the second ice making cell 451 flows toward the inner upper surface of the upper tray 460. Some of the water in the second ice making cell 451 is frozen by the second refrigerant pipe 520. Unfrozen water again falls downward through the second lower opening 473. The water that falls downward through the second lower opening 473 is stored in the water storage unit 350 again.

The controller 190 may determine whether the second pump 362 is turned on and the first reference time t1 has elapsed (S14).

As a result of the determination in step S14, if it is determined that the second pump 362 is turned on and the first reference time t1 has elapsed, the controller 190 turns on the first pump 360 (S15).

When the first pump 360 operates, water may be supplied to the first tray unit 410 through the first water supply unit 380.

The first water nozzle 381 is located below the first tray unit 410. Accordingly, water sprayed upward from the first water nozzle 381 is supplied to the first ice making cell 440 of the first tray unit 410.

Water sprayed upward from the first water nozzle 381 is supplied to the first ice making cell 440 through the first lower opening 423 of the lower tray body 420. The water supplied to the first ice making cell 440 flows toward the upper surface of the upper tray body 430. Some of the water in the first ice-making cell 440 is frozen by the first refrigerant pipe 510. The unfrozen water falls downward again through the first lower opening 423. The water that falls downward through the first lower opening 423 is stored in the water storage unit 350 again.

During the ice-making process, ice is generated on the upper side of the first ice-making cell 440 and grows downward. As water is sprayed into the first ice-making cell 440, a portion of the water is frozen. In the process of spraying the water onto the upper tray body 420 or the ice generated in the upper tray body 420, air bubbles in the water become water. can be discharged from

In the case of this embodiment, the second pump 362 operates first and when the first reference time has elapsed, the first pump 360 is turned on and the first pump 360 and the second pump 362 are operated together. It works. That is, during the ice-making process, the start time of operation (water supply start time) of the first pump 360 may be delayed.

In summary, the ice-making start time (or water supply start time) in the plurality of tray units 410 and 450 may be different. In the plurality of tray units 410 and 450, the start of ice making for a tray unit with a short ice making time may be delayed.

For example, ice making may begin in the second tray unit 450 first, and ice making in the first tray unit 410 may be delayed.

During the ice-making process, the second ice I2 may grow from the upper tray 460 side to cover the upper side of the second lower opening 423a of the lower tray 470. During the ice-making process, the first ice I1 may grow to the inside of the first lower cell 442.

While the ice making process is being performed, the controller 190 may determine whether ice making is completed in each tray unit.

For example, the controller 190 may determine whether the first pump 360 is turned on and the second reference time t2 has elapsed (S16).

The second reference time may be substantially the same as the ice-making time of the first tray unit 410. Alternatively, since the second pump 362 operates for the sum of the first and second reference times, the sum of the first and second reference times is the ice-making time of the second tray unit 450. It may be the same as .

That is, the controller 190 may determine whether ice making is complete based on the ice making time of the first tray unit 410 or the ice making time of the second tray unit 450.

At this time, the second reference time may be determined as a time sufficient to complete the creation of ice in each of the tray units 410 and 450.

As a result of the determination in step S16, when it is determined that the first pump 360 is turned on and the second reference time (t2) has elapsed, the controller 190 determines that the ice-making process is completed and the first pump 360 And the second pump 362 can be turned off (S18).

When the ice-making process is completed, the controller 190 can perform the ice-making process (S18).

When the moving process begins, first, the flow direction of the refrigerant is switched by the switching valve so that the high-temperature refrigerant compressed in the compressor 183 can flow to the cooler 50. The high-temperature refrigerant flowing into the cooler 50 may exchange heat with the ice-making unit 40. When high-temperature refrigerant flows into the cooler 50, heat may be transferred to the ice-making unit 40.

The first ice I1 may be separated from the first tray unit 410 by the heat transferred to the ice making unit 40. When the first ice (I1) is separated from the first tray unit (410), the first ice (I1) may fall onto the guide (70). The first ice I1 that fell to the guide 70 may be stored in the first storage space 132.

The second ice I2 may be separated from at least the surface of the upper tray 460 by the heat transferred to the ice making unit 40.

As time passes, or when the temperature of each tray unit reaches a set temperature, the flow of high-temperature refrigerant to the cooler 50 may be blocked.

Next, the driving unit 690 may operate to separate the second ice I2 from the second tray unit 450. By operating the driving unit 690, the lower tray 470 can be rotated in the forward direction (clockwise with respect to FIG. 12).

When the second ice (I2) is separated from the upper tray 460 and the lower tray 470 by the high-temperature refrigerant flowing into the cooler 50, the second ice (I2) is The lower tray 470 may be rotated while supported on the lower tray 470 . In this case, when the lower tray 470 rotates approximately 90 degrees, the second ice I2 may fall from the lower tray 470.

On the other hand, when the second ice (I2) has been separated from the upper tray 460 but has not yet been separated from the lower tray 470 by the high-temperature refrigerant flowing into the cooler 50, the second ice I2 is separated from the lower tray 470. As the pusher 490 presses the lower tray 470 while the 470 is rotated by the moving angle, the second ice I2 may be separated from the lower tray 470 and fall.

When the second ice I2 is separated from the second tray unit 450, the second ice I2 may fall onto the guide 70. The second ice I2 that fell to the guide 70 may be stored in the second storage space 134.

After the lower tray 470 is rotated in the forward direction, the lower tray 470 is rotated in the reverse direction (counterclockwise in the drawing) by the driving unit 690 to contact the upper tray 460. You can.

If the ice making start time of the two tray units is the same, if the ice moving process is performed when the ice making is completed in the first tray unit 410, a problem may occur in which the moving process is performed before the ice making is completed in the second tray unit 450. You can.

If the ice-moving process is performed at the time the ice making of the second tray unit 450 is completed, ice is excessively made in the first tray unit 410, so that even if the ice-moving process is performed, ice does not form in the first tray unit 410. Moving defects that do not separate may occur.

According to this embodiment, the ice-moving process is performed when ice-making of the two tray units is completed, so ice in a perfect shape can be created and defective ice-moving can be prevented.

Additionally, since the moving process is performed simultaneously in the two tray units, the moving time can be reduced and moving defects can be reduced. If the moving time is reduced, the cycle for creating ice for one time may be reduced. If the cycle is reduced, the amount of ice produced per day or for a set time may increase.

Figure 14 is a flowchart for explaining a control method of an ice making device according to a second embodiment of the present invention.

This embodiment is the same as the first embodiment in other respects, but differs in the method of determining the operation time of the pump and determining the completion of ice making. Therefore, hereinafter, only the characteristic parts of this embodiment will be described.

Referring to FIG. 14, the water supply process is performed (S11), and after the water supply process is completed, the ice making process begins. In the ice-making process, the cooling unit operates and low-temperature refrigerant may flow into the cooler 50. For example, the compressor 183 and the condenser fan 185 may be turned on (S12).

The controller 190 may first turn on the second pump 362 (S13).

When the second pump 362 is turned on, water is supplied to the second tray unit 450 through the second water supply unit 382, and ice making can begin in the second tray unit 450.

The controller 190 may determine whether the second pump 362 is turned on and the temperature detected by the second temperature sensor 192 is less than the first reference temperature (T1) (S21). .

As a result of the determination in step S21, if the temperature detected by the second temperature sensor 192 is determined to be less than the first reference temperature (T1), the controller 190 turns on the first pump 360 (S22 ).

That is, the operating time of the first pump 360 may be determined based on the temperature detected by the second temperature sensor 192. The first reference temperature T1 may be determined in advance based on the difference between the ice-making time of the first tray unit 410 and the ice-making time of the second tray unit 450.

As another example, the controller 190 determines whether the second pump 362 is turned on and the temperature detected by the first temperature sensor 191 is less than the first reference temperature (T1). possible.

When the first pump 360 is operated, water is supplied to the first tray unit 410 through the first water supply unit 380, and ice making may begin in the first tray unit 410.

That is, even in this embodiment, the start time of operation of the first pump 360 may be delayed during the ice making process.

While the ice making process is being performed, the controller 190 may determine whether ice making is completed in each tray unit.

For example, the controller 190 may determine whether the first pump 360 is turned on and the temperature detected by the second temperature sensor 192 is less than the second reference temperature (T2) (S23) .

The second reference temperature T2 is a temperature at which ice making is sufficiently completed in the second tray unit 450. When ice making is completed in the second tray unit 450, ice making may also be completed in the first tray unit 410.

As another example, the controller 190 may determine whether the first pump 360 is turned on and the temperature detected by the first temperature sensor 191 is less than the second reference temperature (T2). .

Although the ice making time of the first tray unit 410 is shorter than the ice making time of the second tray unit 450, the ice making completion time of the two tray units may be the same or similar due to a delay in the ice making start time. Accordingly, when the temperature detected by the first temperature sensor 191 is less than the second reference temperature T2, it may be determined that ice making has been completed in the first tray unit 410. Ice making will also be completed in the second tray unit 450.

As a result of the determination in step S22, if the temperature detected by the second temperature sensor 192 is determined to be less than the second reference temperature (T2), the controller 190 determines that the ice-making process is completed and operates the first pump ( 360) and the second pump 362 can be turned off (S17).

When the ice-making process is completed, the controller 190 can perform the ice-making process (S18).

Figure 15 is a flowchart for explaining a control method of an ice making device according to a third embodiment of the present invention.

In this embodiment, unlike the first and second embodiments, the ice making start time of the plurality of tray units may be the same and the ice making end time (or water supply end time) may be different. Hereinafter, only the characteristic parts of this embodiment will be described.

Referring to FIG. 15, the water supply process is performed (S11), and after the water supply process is completed, the ice making process can begin.

In the ice-making process, the cooling unit operates and low-temperature refrigerant may flow into the cooler 50. For example, the compressor 183 and the condenser fan 185 may be turned on (S12).

The controller 190 may turn on the first pump 360 and the second pump 362 (S31). That is, ice making may start simultaneously in the first and second tray units 410 and 450.

When the first pump 360 is turned on, water is supplied to the first tray unit 410 through the first water supply unit 380, and ice making can begin in the first tray unit 410.

When the second pump 362 is turned on, water is supplied to the second tray unit 450 through the second water supply unit 382, and ice making can begin in the second tray unit 450.

The controller 190 may determine whether the first and second pumps 360 and 362 are turned on and the third reference time t3 has elapsed (S32).

That is, the controller 190 can determine whether ice making has been completed in the first tray unit 410 while the ice making process is being performed in the two tray units 410 and 450.

For example, the controller 190 may determine that ice making in the first tray unit 410 is complete when the first pump 360 is turned on and the third reference time t3 has elapsed. The third reference time (t3) may be referred to as the first end reference time. The third reference time t3 is the ice-making time of the first tray unit 410.

As a result of the determination in step S21, if it is determined that the first and second pumps 360 and 362 are turned on and the third reference time (t3) has elapsed, the controller 190 turns off the first pump 360. Do it (S33).

That is, the controller 190 may first turn off the pump for supplying water to the tray unit in which ice making has been completed.

The controller 190 may determine whether the first pump 360 is turned off and the fourth reference time t4 has elapsed (S34).

As a result of the determination in step S34, if it is determined that the first pump 360 is turned off and the fourth reference time (t4) has elapsed, the controller 190 may turn off the second pump 362 (S35) . That is, when the controller 190 determines that ice making of the second tray unit 450 is complete, it can turn off the second pump 362.

At this time, the sum of the third reference time t3 and the fourth reference time t4 may be the ice-making time of the second tray unit 450. The fourth reference time (t4) may be referred to as the second end reference time.

When the ice-making process is completed, the controller 190 can perform the ice-making process (S18).

Figure 16 is a flowchart for explaining a control method of an ice making device according to a fourth embodiment of the present invention.

This embodiment is the same as the third embodiment in other respects, but there is a difference in the method of determining when the pump is turned off. Therefore, hereinafter, only the characteristic parts of this embodiment will be described.

Referring to FIG. 16, the water supply process is performed (S11), and after the water supply process is completed, the ice making process can begin.

In the ice-making process, the cooling unit operates and low-temperature refrigerant may flow into the cooler 50. For example, the compressor 183 and the condenser fan 185 may be turned on (S12).

The controller 190 may turn on the first pump 360 and the second pump 362 (S31). That is, ice making may start simultaneously in the first and second tray units 410 and 450.

When the first pump 360 is turned on, water is supplied to the first tray unit 410 through the first water supply unit 380, and ice making can begin in the first tray unit 410.

When the second pump 362 is turned on, water is supplied to the second tray unit 450 through the second water supply unit 382, and ice making can begin in the second tray unit 450.

The controller 190 determines whether the first and second pumps 360 and 362 are turned on and the temperature detected by the first temperature sensor 191 is less than the third reference temperature (T3). You can do it (S41).

The third reference temperature may be referred to as a first end reference temperature for determining completion of ice making of the first tray unit.

The controller 190, when the first and second pumps 360 and 362 are turned on and the temperature detected by the first temperature sensor 191 is less than the third reference temperature (T3), the It may be determined that ice making has been completed in the 1 tray unit 410.

As another example, the controller 190 operates when the first and second pumps 360 and 362 are turned on and the temperature detected by the second temperature sensor 192 is less than the third reference temperature (T3). In this case, it is also possible to determine that ice making has been completed in the first tray unit 410.

That is, the controller 190 can determine whether ice making has been completed in the first tray unit 410 while the ice making process is being performed in the two tray units 410 and 450.

As a result of the determination in step S41, if the temperature detected by the first temperature sensor 191 is determined to be less than the third reference temperature (T3), the controller 190 turns off the first pump 360 ( S42).

That is, the controller 190 may first turn off the pump for supplying water to the tray unit in which ice making has been completed.

The controller 190 may determine whether the first pump 360 is turned off and the temperature detected by the second temperature sensor 192 is less than the second sensed temperature T2 (S43).

The second reference temperature T2 is a temperature at which ice making is sufficiently completed in the second tray unit 450.

If the temperature detected by the second temperature sensor 192 is determined to be less than the second reference temperature T2, it may be determined that ice making in the second tray unit 450 has been completed.

As a result of the determination in step S43, if the temperature detected by the second temperature sensor 192 is determined to be less than the second reference temperature (T2), the controller 190 turns off the second pump 362 ( S44).

When the ice-making process is completed, the controller 190 can perform the ice-making process (S18).

Figure 17 is a control block diagram of an ice making device according to a fifth embodiment of the present invention.

Referring to FIG. 17, in the ice making device of this embodiment, the first refrigerant pipe 510 and the second refrigerant pipe 520 may be connected in parallel.

The ice making device of this embodiment may further include a first valve 194 and a second valve 195 in addition to the configuration described in FIG. 10 . The configuration described in FIG. 10 may be applied equally or similarly to the ice making device of this embodiment.

The first valve 194 may control the flow of refrigerant into the first refrigerant pipe 510. For example, when the first valve 194 is turned on, refrigerant flows into the first refrigerant pipe 510, and when the first valve 194 is turned off, refrigerant flows into the first refrigerant pipe 510. blocked. When the first valve 194 is turned on, the first valve 194 can control the flow rate of the refrigerant flowing into the first refrigerant pipe 510.

The second valve 195 may control the flow of refrigerant into the second refrigerant pipe 520. For example, when the second valve 195 is turned on, refrigerant flows into the second refrigerant pipe 520, and when the second valve 195 is turned off, refrigerant flows into the second refrigerant pipe 520. blocked. When the second valve 195 is turned on, the second valve 195 can control the flow rate of the refrigerant flowing into the second refrigerant pipe 520.

Figure 18 is a flowchart for explaining the control method of the ice making device according to the fifth embodiment of the present invention.

This embodiment also basically explains a method of controlling the ice making device based on the fact that the ice making times of the plurality of tray units are different.

Referring to FIG. 18, the process for generating ice may include a water supply process (S11). The process for generating ice may further include an ice-making process (S51 to S57). The process for generating ice may further include a moving process (S18).

When the water supply process starts (S11), the water supply valve 304 is turned on and water supplied from the external water supply source 302 flows along the water supply passage. The water flowing along the water supply passage is supplied to the ice-making unit 40 through the water supply mechanism 320.

The water supplied to the ice making unit 40 falls to the lower side of the ice making unit 40 and is stored in the water storage unit 350. When the level of water stored in the water storage unit 350 reaches the reference level, the water supply valve 304 is turned off and the water supply process is completed.

After the water supply process is completed, the ice-making process begins.

In the ice-making process, the cooling unit operates and low-temperature refrigerant may flow into the cooler 50. In the ice-making process, water may be supplied to the ice-making unit 40 by the water supply unit 330.

Specifically, the controller 190 may first turn on the second pump 362 (S51). That is, ice making of the second tray unit 450, which has a long ice making time, may start first.

For example, the controller 190 may turn on the compressor 183 and the condenser fan 185 (S52).

The controller 190 may turn on the second valve 195 (S53).

Steps S51 to S53 may be performed sequentially or simultaneously. The order of steps S51 to S53 can be changed.

When the second valve 195 is turned on, refrigerant may flow into the second refrigerant pipe 520 to cool the second tray unit 450.

The difference between the ice making time in the second tray unit 450 and the ice making time in the first tray unit 410 may be stored in a memory (not shown).

The ice making time of the first tray unit 410 and the second tray unit 450 may be determined through multiple experiments and stored in the memory.

Based on the difference in ice-making time, the difference in operating times (first reference time) of the first pump 360 and the second pump 362 may be determined.

When the second pump 362 is turned on, water is supplied to the second tray unit 450 through the second water supply unit 382 to create ice in the second tray unit 450.

The controller 190 may determine whether the second valve 195 is turned on and the first reference time t1 has elapsed (S54). Alternatively, the controller 190 may determine whether the second pump 362 is turned on and the first reference time t1 has elapsed.

As a result of the determination in step S54, if it is determined that the second valve 195 is turned on and the first reference time (t1) has elapsed, the controller 190 operates the first pump 360 and the first valve 194 Turn on (S55).

When the first pump 360 is turned on, water may be supplied to the first tray unit 410 through the first water supply unit 380.

When the first valve 194 is turned on, the refrigerant flows into the first refrigerant pipe 510 to cool the first tray unit 410, thereby generating ice in the first tray unit 410. there is.

While the ice making process is being performed, the controller 190 may determine whether ice making is completed in each tray unit.

For example, the controller 190 may determine whether the first pump 360 or the first valve 194 is turned on and the second reference time t2 has elapsed (S56).

The second reference time may be substantially the same as the ice-making time of the first tray unit 410. Alternatively, since the second pump 362 operates for the sum of the first and second reference times, the sum of the first and second reference times is the ice-making time of the second tray unit 450. It may be the same as .

That is, the controller 190 may determine whether ice making is complete based on the ice making time of the first tray unit 410 or the ice making time of the second tray unit 450.

At this time, the second reference time may be determined as a time sufficient to complete the creation of ice in each of the tray units 410 and 450.

As a result of the determination in step S56, if it is determined that the first pump 360 or the first valve 194 is turned on and the second reference time t2 has elapsed, the controller 190 determines that the ice-making process is completed. The first pump 360 and the second pump 362 can be turned off (S57).

Since high-temperature refrigerant must flow through the refrigerant pipes 510 and 520 during the ice removal process after making ice, the first valve 194 and the second valve 195 can be maintained in an on state. Alternatively, the first valve 194 and the second valve 195 may be turned on after being turned off.

When the ice-making process is completed, the controller 190 can perform the ice-making process (S18).

Figure 19 is a flowchart for explaining a control method of an ice making device according to the sixth embodiment of the present invention.

This embodiment is the same as the fifth embodiment in other respects, but differs in the method of determining the operation time of the pump and determining the completion of ice making. Therefore, hereinafter, only the characteristic parts of this embodiment will be described.

Referring to FIG. 19, the process for generating ice may include a water supply process (S11). The process for generating ice may further include an ice-making process. The process for generating ice may further include a moving process (S18).

When the water supply process starts (S11), the water supply valve 304 is turned on and water supplied from the external water supply source 302 flows along the water supply passage. The water flowing along the water supply passage is supplied to the ice-making unit 40 through the water supply mechanism 320.

The water supplied to the ice making unit 40 falls to the lower side of the ice making unit 40 and is stored in the water storage unit 350. When the level of water stored in the water storage unit 350 reaches the reference level, the water supply valve 304 is turned off and the water supply process is completed.

After the water supply process is completed, the ice-making process begins.

In the ice-making process, the cooling unit operates and low-temperature refrigerant may flow into the cooler 50. In the ice-making process, water may be supplied to the ice-making unit 40 by the water supply unit 330.

Specifically, the controller 190 may first turn on the second pump 362 (S51). That is, ice making of the second tray unit 450, which has a long ice making time, may start first.

For example, the controller 190 may turn on the compressor 183 and the condenser fan 185 (S52).

The controller 190 may turn on the second valve 195 (S53).

Steps S51 to S53 may be performed sequentially or simultaneously. The order of steps S51 to S53 can be changed.

When the second valve 195 is turned on, refrigerant may flow into the second refrigerant pipe 520 to cool the second tray unit 450.

When the second pump 362 is turned on, water is supplied to the second tray unit 450 through the second water supply unit 382 to create ice in the second tray unit 450.

The controller 190 determines whether the second pump 362 or the second valve 195 is turned on and the temperature detected by the second temperature sensor 192 is less than the first reference temperature (T1). It can be determined (S61) (determination of the starting point of the first pump).

As a result of the determination in step S61, if the temperature detected by the second temperature sensor 192 is determined to be less than the first reference temperature (T1), the controller 190 operates the first pump 360 and the first valve ( 194) is turned on (S62).

As another example, the controller 190 operates when the second pump 362 or the second valve 195 is turned on and the temperature detected by the first temperature sensor 191 is higher than the first reference temperature (T1). It is also possible to determine whether it is small or not.

When the first pump 360 is turned on, water may be supplied to the first tray unit 410 through the first water supply unit 380. When the first valve 194 is turned on, the refrigerant flows into the first refrigerant pipe 510 to cool the first tray unit 410, thereby generating ice in the first tray unit 410. there is.

While the ice making process is being performed, the controller 190 may determine whether ice making is completed in each tray unit.

For example, the controller 190 determines whether the first pump 360 or the first valve 194 is turned on and the temperature detected by the second temperature sensor 192 is less than the second reference temperature (T2). You can judge (S63).

The second reference temperature T2 is a temperature at which ice making is sufficiently completed in the second tray unit 450. When ice making is completed in the second tray unit 450, ice making may also be completed in the first tray unit 410.

As another example, the controller 190 determines whether the first pump 360 or the first valve 194 is turned on and the temperature detected by the first temperature sensor 191 is less than the second reference temperature (T3). It is also possible to determine whether

The ice making time of the first tray unit 410 is shorter than the ice making time of the second tray unit 450, but due to the delay in the ice making start time (or water supply start time), the ice making completion time of the two tray units is the same or similar. It can happen. Accordingly, when the temperature detected by the second temperature sensor 192 is less than the second reference temperature T2, it may be determined that ice making has been completed in the second tray unit 450. Ice making will also be completed in the first tray unit 410.

As a result of the determination in step S63, if the temperature detected by the second temperature sensor 192 is determined to be less than the second reference temperature (T2), the controller 190 determines that the ice-making process is completed and operates the first pump ( 360) and the second pump 362 can be turned off (S57).

Since high-temperature refrigerant must flow through the refrigerant pipes 510 and 520 during the ice removal process after making ice, the first valve 194 and the second valve 195 can be maintained in the on state. Alternatively, the first valve 194 and the second valve 195 may be turned on after being turned off.

When the ice-making process is completed, the controller 190 can perform the ice-making process (S18).

Figure 20 is a flowchart for explaining a control method of an ice making device according to the seventh embodiment of the present invention.

This embodiment is basically the same as the third embodiment, but the difference is that two valves are used to flow the refrigerant. Hereinafter, only the characteristic parts of this embodiment will be described.

Referring to FIG. 20, the water supply process is performed (S11), and after the water supply process is completed, the ice making process can begin.

The controller 190 may turn on the first pump 360 and the second pump 362 (S71). The controller 190 can turn on the compressor 183 and the condenser fan 185 (S72). During the ice-making process, the controller 190 may turn on the first valve 194 and the second valve 195 (S73).

Accordingly, ice making may begin simultaneously in the first and second tray units 410 and 450.

When the first pump 360 is turned on, water may be supplied to the first tray unit 410 through the first water supply unit 380. When the first valve 194 is turned on, refrigerant flows into the first refrigerant pipe 510 to cool the first tray unit 410.

When the second pump 362 is turned on, water can be supplied to the second tray unit 450 through the second water supply unit 382. When the second valve 195 is turned on, refrigerant may flow into the second refrigerant pipe 520 to cool the second tray unit 450.

The controller 190 may determine whether the first and second pumps 360 and 362 are turned on and the third reference time t3 has elapsed (S74).

That is, the controller 190 can determine whether ice making has been completed in the first tray unit 410 while the ice making process is being performed in the two tray units 410 and 450.

For example, the controller 190 may determine that ice making in the first tray unit 410 is complete when the first and second pumps 360 and 362 are turned on and the third reference time (t3) has elapsed. there is. The third reference time t3 is the ice-making time of the first tray unit 410.

As a result of the determination in step S74, if it is determined that the first and second pumps 360 and 362 are turned on and the third reference time t3 has elapsed, the controller 190 operates the first pump 360 and the third reference time t3. 1 Turn off the valve 194 (S75).

The controller 190 may determine whether the first pump 360 or the first valve 194 is turned off and the fourth reference time t4 has elapsed (S76).

As a result of the determination in step S76, if it is determined that the first pump 360 is turned off and the fourth reference time (t4) has elapsed, the controller 190 turns on the second pump 362 and the second valve 195. It can be turned off (S77). That is, when the controller 190 determines that ice making of the second tray unit 450 is complete, it can turn off the second pump 362.

At this time, the sum of the third reference time t3 and the fourth reference time t4 may be the ice-making time of the second tray unit 450.

When the ice-making process is completed, the controller 190 can perform the ice-making process (S18).

Figure 21 is a flowchart for explaining a control method of an ice making device according to the eighth embodiment of the present invention.

This embodiment is basically the same as the seventh embodiment, but there is a difference in the method of determining when the pump is turned off. Therefore, hereinafter, only the characteristic parts of this embodiment will be described.

Referring to FIG. 21, the water supply process is performed (S11), and after the water supply process is completed, the ice making process can begin.

The controller 190 may turn on the first pump 360 and the second pump 362 (S71). The controller 190 can turn on the compressor 183 and the condenser fan 185 (S72). During the ice-making process, the controller 190 may turn on the first valve 194 and the second valve 195 (S73).

The controller 190 determines whether the first and second pumps 360 and 362 are turned on and the temperature detected by the first temperature sensor 191 is less than the third reference temperature (T3). You can do it (S81).

The controller 190, when the first and second pumps 360 and 362 are turned on and the temperature detected by the first temperature sensor 191 is less than the third reference temperature (T3), the It may be determined that ice making has been completed in the 1 tray unit 410.

As another example, the controller 190 operates when the first and second pumps 360 and 362 are turned on and the temperature detected by the second temperature sensor 192 is less than the third reference temperature (T3). In this case, it is also possible to determine that ice making has been completed in the first tray unit 410.

That is, the controller 190 can determine whether ice making has been completed in the first tray unit 410 while the ice making process is being performed in the two tray units 410 and 450.

As a result of the determination in step S81, if the first and second pumps 360 and 362 are turned on and the temperature detected by the first temperature sensor 191 is determined to be less than the third reference temperature (T3), the The controller 190 turns off the first pump 360 and the first valve 194 (S82).

The controller 190 determines whether the first pump 360 or the first valve 194 is turned off and the temperature detected by the second temperature sensor 192 is less than the second sensed temperature (T2). (S83).

If the temperature detected by the second temperature sensor 192 is determined to be less than the second reference temperature T2, it may be determined that ice making in the second tray unit 450 has been completed.

As a result of the determination in step S83, if the temperature detected by the second temperature sensor 192 is determined to be less than the second reference temperature (T2), the controller 190 operates the second pump 362 and the second valve. Turn off (194) (S77).

When the ice-making process is completed, the controller 190 can perform the ice-making process (S18).

In some embodiments, ice making of a tray with a shorter ice making time in a plurality of trays (or tray units) may be delayed. For example, the start of water supply to a tray with a shorter ice making time may be delayed.

In some other embodiments, the end time of water supply to a tray with a shorter ice making time in a plurality of trays (or tray units) may be advanced.

In some other embodiments, cooling of a tray with a shorter ice making time in a plurality of trays (or tray units) may be delayed. For example, the start of cooling of trays with shorter ice making times may be delayed.

In some other embodiments, the cooling end time of a tray with a shorter ice making time in a plurality of trays (or tray units) may be advanced.

As another example, the amount of water supplied per unit time between a plurality of trays may be different. For example, while a plurality of pumps operate simultaneously, the amount of water per unit time supplied to the first tray may be lower than the amount of water per unit time supplied to the second tray. In this case, the ice making completion times in the first tray and the second tray may be the same or similar. Even when multiple pumps do not operate simultaneously, the amount of water per unit time supplied to the first tray when the first pump operates is less than the amount of water per unit time supplied to the second tray when the second pump operates. You can.

As another example, multiple pumps may operate intermittently. That is, the plurality of pumps can be repeatedly turned on and off. During the ice-making process, the on-time times of the plurality of pumps may be different. Alternatively, during the ice-making process, the number of turns on (number of water supply times) between the plurality of pumps may be different.

For example, the on time of the first pump corresponding to the first tray may be shorter than the on time of the second pump corresponding to the second tray. Alternatively, the turn-on number of the first pump corresponding to the first tray may be less than the turn-on number of the second pump corresponding to the second tray.

As another example, the amount of cooling power supplied to the plurality of trays may be different. The cooling power supply amount may be the amount of cooling power supplied to the trays by the cooling unit.

For example, the amount of cold power supplied to the first tray may be less than the amount of cold power supplied to the second tray. Alternatively, the number of times cold power is supplied to the first tray may be less than the number of times cold power is supplied to the second tray. Alternatively, the time for supplying cooling power to the first tray may be shorter than the time for supplying cooling power to the second tray.

Meanwhile, it is also possible to apply the technology applied to the ice making device 1 to a refrigerator. That is, the refrigerator may include some or all of the components of the ice making device 1.

First, the ice making unit 40 of the ice making device 1 can be applied to the refrigerator. The refrigerator may include a cabinet having a storage compartment, and a door that opens and closes the storage compartment. The ice-making room may be provided in the cabinet or door.

The ice making unit 40 may be provided in the ice making room with the same structure or a similar form as the ice making unit 40 of this embodiment.

In this embodiment, the cooling unit in the ice making device 1 may be replaced with a cooling unit or a refrigerant cycle that cools the storage compartment of the refrigerator in the refrigerator.

The guide 70, water supply mechanism 320, and water supply unit 330 provided in the ice making device 1 may be the same or applied to the refrigerator, or may be modified in shape, size, or location to suit the characteristics of the refrigerator. possible.

Claims (24)

An ice-making unit provided in the ice-making room to produce ice;
a cooling unit for cooling the ice making unit;
a water supply unit for supplying water to the ice making unit during the ice making process;
a moving unit for separating ice from the ice making unit during the moving process; and
Includes a controller for controlling the cooling unit, the water supply unit, and the moving unit,
The ice making unit includes a first tray having first ice making cells and a second tray having second ice making cells,
The controller is configured to control ice making in one of the first tray and the second tray to be delayed from ice making in the other tray. According to claim 1,
An ice making device wherein the ice making time of one tray is shorter than the ice making time of the other tray. According to claim 1,
The ice making device wherein the controller controls the water supply unit so that the water supply start time of one tray is delayed from the water supply start time of the other tray. According to claim 3,
The controller is configured to control the water supply unit so that water supply starts from the other tray, and when a first reference time elapses, water supply from the one tray starts. According to claim 4,
The controller controls the water supply unit so that water supply to one of the trays starts and water supply to the trays ends when a second reference time has elapsed. According to claim 4,
Further comprising a temperature sensor for detecting the temperature of one or more of the first tray and the second tray,
The controller controls the water supply unit to start water supply to one tray when water supply starts from the other tray and the temperature detected by the temperature sensor is less than the first reference temperature. According to claim 6,
The controller controls the water supply unit to stop water supply to the trays when water supply to one of the trays starts and the temperature detected by the temperature sensor is lower than the second reference temperature. According to claim 1,
The controller is an ice making device that controls the water supply unit so that the water supply amount per unit time to one of the trays is less than the water supply amount per unit time to the other tray. According to claim 1,
The ice making device wherein the controller controls the water supply unit so that the water supply time of one tray is shorter than the water supply time of the other tray. According to claim 1,
The controller is an ice making device that controls the water supply unit so that the number of times water is supplied to one of the trays is less than the number of times to supply water to the other tray. According to claim 1,
The controller is an ice making device that controls the cooling unit so that the timing of supplying cold power to one of the trays is delayed from the timing of supplying cold power to the other tray. According to claim 11,
The controller is configured to control the cooling unit so that supply of cold power to the other tray begins and supply of cold power to the one tray when a first reference time has elapsed. According to claim 12,
The controller controls the cooling unit to start supplying cold power to one of the trays and to stop supplying cold power to the trays when a second reference time has elapsed. According to claim 1,
The controller is an ice making device that controls the cooling unit so that the amount of cold power supplied per unit time to the one tray is less than the amount of cold power supplied per unit time to the other tray. According to claim 1,
The controller controls the cooling unit so that the cooling power supply time of one tray is shorter than the cooling power supply time of the other tray. According to claim 1,
The controller is an ice making device that controls the cooling unit so that the number of times cold power is supplied to one tray is less than the number of times cold power is supplied to the other tray. According to claim 1,
The controller is an ice making device that operates the moving unit to separate ice from each of the first tray and the second tray when ice making of the first tray or the second tray is completed. An ice-making unit provided in the ice-making room to produce ice;
a cooling unit for cooling the ice making unit;
a water supply unit for supplying water to the ice making unit during the ice making process;
a moving unit for separating ice from the ice making unit during the moving process; and
Includes a controller for controlling the cooling unit, the water supply unit, and the moving unit,
The ice making unit includes a first tray having first ice making cells and a second tray having second ice making cells,
The controller, after starting to supply cold power or start supplying water to each of the first tray and the second tray, causes the supply of cold power to end or the water supply to any one of the first tray and the second tray to end. An ice making device that controls the water supply unit or the cooling unit. According to claim 18,
The controller is configured to operate the moving unit to separate ice from each of the first and second trays when ice making of the other of the first and second trays is completed. According to claim 18,
The controller terminates the supply of water or cold power to one of the first tray and the second tray when a first reference time elapses after ice making of each of the first tray and the second tray begins. According to claim 19,
The ice making device wherein the controller terminates the supply of water or cold power to the other tray when a second reference time elapses after the supply of water or cold power to one of the trays is terminated. According to claim 18,
Further comprising a temperature sensor for detecting the temperature of one or more of the first tray and the second tray,
The controller, after ice making of each of the first tray and the second tray starts, if the temperature detected by the temperature sensor is less than the third reference temperature, supplies water to one of the first tray and the second tray. or a de-icer that terminates the cold power supply. According to claim 22,
An ice maker that terminates the water supply or cold power supply to the other tray if the temperature detected by the temperature sensor is lower than the second reference temperature after the supply of water or cold power to one of the trays is terminated. cabinets with storage compartments;
a door that opens and closes the storage compartment;
an ice-making room provided in the door or the cabinet;
an ice-making unit provided in the ice-making room and configured to generate ice;
a cooling unit for cooling the ice making unit;
a water supply unit for supplying water to the ice making unit during the ice making process;
a moving unit for separating ice from the ice making unit during the moving process; and
Includes a controller for controlling the cooling unit, the water supply unit, and the moving unit,
The ice making unit includes a first tray having first ice making cells and a second tray having second ice making cells,
The controller is configured to control ice making in one of the first tray and the second tray to be delayed from ice making in the other tray.

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