KR20220058689A - Ice making device and refrigerator including the same, and control method - Google Patents

Abstract

The present invention provides an ice maker capable of making transparent ice capable of maintaining a circular ice state for a relatively long time and a refrigerator including the same. According to the present invention, the ice maker mounted on a cooling main body comprises: an ice maker body; an ice-making tray rotatably mounted on one side of the ice maker body and forming an ice-making groove in which ice-making water is accommodated; at least one heater unit and a cooling unit formed on at least a part of the upper tray; at least one driving unit providing a rotational force to rotate a rotational hinge shaft of the ice-making tray; and at least one water level sensor formed on one side of the ice-making tray. At least a part of the water level sensor extends into the ice-making groove of the ice-making tray to detect the water level.

Description

Ice maker, refrigerator including same, and control method thereof

The present invention relates to an ice maker, a refrigerator including the same, and a method for controlling the same.

BACKGROUND ART In general, a refrigerator is a device for storing food at a low temperature to prevent deterioration of food at room temperature. Recently, a product equipped with an ice maker for a refrigerator that is provided in a refrigerator and provides ice to a user separately from food has been released.

The ice maker for a refrigerator includes an ice-making tray having a plurality of ice-making grooves for making ice of a predetermined size by receiving water automatically, an ice bank provided under the ice-making tray to store ice transferred by an icing motor, and the ais bank It is mounted on one side of the driving unit for driving to transport the ice.

Here, there may be two methods for icing the ice made in the ice tray. After the ice tray itself is twisted using the above-described icing motor to separate the ice made from the ice making groove, the ice below the ice tray is removed. A twist type that drops into a bank and a separate ice ejector is used to separate the ice from the ice-making groove by applying a predetermined amount of ice heat to the ice-making tray made of metal by using an ice heater to make ice. This is a heater type that pushes to one side of the tray and drops it to the ice bank below it.

Recently, various shapes, such as a round shape, for cocktails, etc. are required, and there is a problem such as agglomeration of ice while the ice is stored in an ice box. A circular shape that can reduce the contact area between ices Demand for ice and transparent ice is on the rise.

Republic of Korea Patent Publication No. 10-0299243 (published on June 7, 2001)

The present invention has been devised to solve the above technical problem, and by improving the ice-making tray of the twist-type ice maker to a specific structure, the ice can be transferred easily. To provide an ice maker capable of making ice with transparent ice capable of maintaining a circular ice state for a relatively long time by delaying the melting rate of ice under the same conditions for aesthetics, a refrigerator including the same, and a control method thereof for that purpose

Another object of the present invention is to provide an ice maker capable of improving the ice-making efficiency of the ice-making tray by improving the ice-making tray into a specific structure in which a separate sensor capable of contacting the ice-making water is provided, and a refrigerator including the same. do it with

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

An ice maker according to an embodiment of the present invention comprises:

ice machine body;

an ice-making tray rotatably mounted on one side of the ice maker body and forming an ice-making groove in which ice-making water is accommodated;

at least one heater unit and a cooling unit formed on at least a portion of the upper tray;

at least one driving unit providing a rotational force to rotate the rotation hinge shaft of the ice tray; and

At least one water level sensor formed on one side of the ice-making tray; includes, wherein at least a portion of the water level sensor extends into the ice-making groove of the ice-making tray to detect the water level.

In addition, the ice maker according to an embodiment of the present invention,

An ice maker mounted on a cooling matrix, comprising:

ice machine body;

an ice-making tray rotatably mounted on one side of the ice maker body and forming an ice-making groove in which ice-making water is accommodated;

at least one heater unit and a cooling unit formed on at least a portion of the upper tray;

at least one driving unit providing a rotational force to rotate the rotation hinge shaft of the ice tray; and

At least one water level sensor formed on one side of the ice-making tray; but, the water level sensor may be integrally included in a separate, independent casing member including a temperature detection function.

In addition, the ice maker according to an embodiment of the present invention,

An ice maker mounted on a cooling matrix, comprising:

ice machine body;

an ice-making tray rotatably mounted on one side of the ice maker body, forming an ice-making groove in which ice-making water is accommodated, and having a vertically coupled structure or a pair of first and second ice-making trays coupled to the left and right;

at least one heater unit and a cooling unit formed on at least a portion of the upper tray;

at least one driving unit providing a rotational force to rotate the rotation hinge shaft of the ice tray; and

It may include at least one energization sensor formed on one side of at least one of the first ice-making tray part and the second ice-making tray part.

In one example of the present invention, it further includes a temperature sensor formed on one side of the ice-making tray, the temperature sensor may be formed in the same or adjacent to the water level sensor.

Here, in one example of the present invention, the temperature sensor,

outer case; and

Including; a sensor unit inserted into the case,

The case may be formed of a metal material and have a structure connected to the capacitive sensing element.

In one example of the present invention, the temperature sensor may be separately insulated with an insulating material.

In one example of the present invention, the water level sensor may have a structure that extends from the outside to the inside of the ice-making tray and is mounted.

In one example of the present invention, the ice-making tray may include a structure that is vertically coupled or a pair of a pair of first and second ice-making tray units coupled to the left and right.

In one example of the present invention, the water level sensor may be formed in at least one of the first ice-making tray part and the second ice-making tray part of the ice-making tray.

In one example of the present invention, the energization sensor may have a facing portion that is in close contact with the inner surface of the ice-making tray, and the facing portion may be formed in a shape that does not flow due to rotation by an external force.

In one example of the present invention, an insertion groove may be formed in one side of the ice-making tray so that at least a portion of the water level sensor is inserted.

In one example of the present invention, the ice-making tray may be manufactured to include at least one of a metal material, a rubber material, and a resin.

In one example of the present invention, the ice-making tray may have a structure in which ice-making water is supplied in a fixed amount through multi-stage water supply control.

In one example of the present invention, a water supply unit for supplying ice making water to the ice making groove may be formed on one side of the ice machine body.

In one example of the present invention, the ice maker may include at least one of cooling and hot gas as a refrigerant.

In one example of the present invention, the ice-making groove of the ice-making tray may have a circular, polygonal, diamond-shaped or elliptical cross-section.

In one example of the present invention, the drive unit may be operated by an automatic or manual lever.

In one example of the present invention, the heater unit may include a silicon cord heater or a planar heater.

In one example of the present invention, the heater part is formed on the upper tray of the ice-making tray, and may be radially formed in a curved portion forming the ice-making groove, and in one example, the heater is a spiral. It may be formed in a shape.

In an example of the present invention, a heater seating portion for supporting the heater may be formed in a curved portion forming the ice-making groove on the ice-making tray.

In an example of the present invention, an air hole penetrating through the ice-making groove may be formed in a curved portion forming the ice-making groove of the ice-making tray.

In an example of the present invention, the ice-making tray may further include an upper cover in which a water supply guide unit communicating with the air hole is formed.

In one example of the present invention, the ice maker body and the heater may have a structure electrically connected with a silicon wire.

In one example of the present invention, the power connection part of the heater may be provided on a separate hinge rotation cap member.

In one example of the present invention, the heater unit formed on the upper tray may be controlled to generate crystal ice by adjusting the ice making time of the ice maker to generate heat.

In one example of the present invention, a plurality of the ice-making grooves are formed in one direction, and a water supply communication part may be formed to communicate with each other.

Meanwhile, the present invention provides a refrigerator including the ice maker.

An ice maker and a refrigerator including the same according to an embodiment of the present invention improve the ice maker tray of the twist type ice maker to have a specific structure so that the ice can be transferred easily. It provides the effect of making ice with transparent ice that can maintain a circular ice state for a relatively long time by giving a feeling and delaying the melting speed of ice under the same conditions.

In addition, the ice maker and the refrigerator including the same according to an embodiment of the present invention have a specific structure in which the ice tray is provided with a separate detection sensor capable of contacting the ice making water, thereby improving the ice making efficiency of the ice making tray. provides an effect.

1 is a perspective view showing the interior of a refrigerator equipped with an ice maker according to an embodiment of the present invention;
2 is a partial perspective view showing a part of a twist type ice maker according to an embodiment of the present invention;
3 (a) to 3 (c) is a perspective view of a twist type ice maker according to an embodiment of the present invention,
4 is a perspective view of a detection sensor coupling unit according to an embodiment of the present invention;
5 is a perspective view of a fastening means of a twist type ice maker according to an embodiment of the present invention;
6 to 8 are cross-sectional views of a detection sensor coupling part of a twist type ice maker according to various embodiments of the present invention;
9 to 13 are partial cross-sectional views of a twist type ice maker according to various embodiments of the present invention;
14 is a cross-sectional view of a case in which a detection sensor of a twist-type ice maker according to an embodiment of the present invention is incorporated.

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

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

1 is a perspective view showing the inside of a refrigerator equipped with an ice maker according to an embodiment of the present invention, and FIG. 2 is a perspective view illustrating a twist type ice maker according to an embodiment of the present invention.

First, referring to FIG. 1 , a refrigerator 1 may include a cabinet forming a storage compartment with an open front, and at least one door 8 and 9 for opening and closing the opened front of the storage compartment.

The storage compartment may include at least one of a refrigerating compartment storing food in a refrigerated state and a freezing compartment storing food in a frozen state. The refrigerator 1 of this embodiment is illustrated as including both the refrigerating compartment and the freezing compartment, and the refrigerating compartment may be provided above the freezing compartment.

The doors 8 and 9 may include a refrigerating compartment door 8 for opening and closing the refrigerating compartment and a freezing compartment door 9 for opening and closing the refrigerating compartment. There are two refrigerating compartment doors 8 arranged to the left and right of each other. The left refrigerating compartment door 8 can open and close the left side of the refrigerating compartment, and the right refrigerating compartment door 8 can open and close the right side of the refrigerating compartment. can

The ice box may be installed in the storage compartment of the refrigerator 1 . The ice box may be disposed below the ice maker 100 . The ice box may be formed in a cylindrical shape with an open upper side. The ice made by the ice maker 100 may be transferred from the ice maker 100 to the ice box, and may be accommodated and stored in the ice box.

An auger may be disposed in the ice box. The auger may be rotatably installed in the ice box in a circumferential direction. Both ends of the auger may be rotatably coupled to both sides of the ice box, respectively. A spiral groove may be formed on the outer peripheral surface of the auger. When the auger rotates, the ice stored in the ice box may be transferred to the outside of the ice box through the spiral groove. The auger may be rotated by a driving force of an auger motor installed on one side of the ice box.

The ice maker 100 may be installed in at least one of the refrigerating compartment and the freezing compartment. In the refrigerator 1 of this embodiment, the ice maker 100 may be installed in the upper left side of the refrigerating chamber.

The ice maker 100 may receive ice-making water from the refrigerator 1 , and convert the ice-making water into ice by the cold air supplied to the storage chamber from the freezing cycle of the refrigerator 1 to manufacture the ice. .

The ice maker 100 according to the present embodiment may include a heater type and a twist type depending on the type of ice-removing the ice-made ice.

Here, the twist-type ice maker among the ice makers according to an embodiment of the present invention includes a driving unit 50 in which at least one or more gears are interposed, and a plurality of ice-making grooves 15 provided at one side of the driving unit 50 . It may include an ice-making tray 200 composed of a pair of upper trays 210 and lower trays 220 forming the .

A plurality of electric components may be accommodated in the control box 110 of the ice maker 100 , including a driving motor for driving the driving unit 50 , a gear, and the like. The driving unit in the control box 110 may be controlled to perform an operation through a control unit (not shown). As the lower tray 220 of the ice-making tray 200 is rotated by the driving force of the driving motor, the ice in the ice-making groove 15 may be removed.

The full ice detection unit 111 may be formed in a lever type rotatably provided in the control box 110 . The full ice detection unit 111 may include an optical sensor (not shown) including a light emitting unit and a light receiving unit. The signal detected by the full ice detection unit 111 may be input to the control unit, and this control unit may determine whether the ice stored in the ice bank (not shown) is full through the signal input from the full ice detection unit 111 . When the ice stored in the ice bank is in a full ice state, the controller may stop the supply of the ice-making water supplied to the ice-making groove 15 and stop the production of ice. Of course, if the ice stored in the ice bank is not in a full ice state, the controller may restart the production of the ice. The lifespan of the photosensor may be improved by configuring the photosensor to be turned on only during regular or irregular full ice detection.

Meanwhile, in the twist-type ice maker among the ice makers according to an embodiment of the present invention, as shown in FIG. 2 , the same driving box 50 and the driving box 50 are accommodated in the heater-type ice maker described above. 110 and an ice-making tray 200 provided on one side of the control box 110, a plurality of ice-making grooves 15 are formed, and rotatable at a predetermined angle. Here, according to the present invention, an air hole 211 may be formed in the ice making groove 15 to discharge air while supplying ice making water, which will be described in detail below.

The heater-type ice maker and the twist-type ice maker may be classified according to the presence or absence of an ice heater (not shown) and whether the ice tray 200 is rotated to be twisted. In particular, the position of the driving motor disposed inside the driving box and the design of the gear set may be different depending on whether it is a heater type or a twist type.

In the case of a heater-type ice maker, when ice making is completed in the ice making groove 15 of the ice making tray 200 , the ice is removed by the ice heater that applies a predetermined heat to the ice making tray 200 , and then a plurality of ejectors are used. An ejector rod (not shown) equipped with a pin (not shown) is rotated by an interlocking operation of a drive motor and a gear set provided inside the driving box 50, while rotating the ejector pin to remove the ice from the lower part. It is driven to store into an ice storage container (not shown).

In addition, in the case of the twist type ice maker according to the present invention, when the ice making of the ice water in the ice making groove 15 of the ice maker tray 200 is completed, the drive motor is driven and the gear set is driven interlockingly, and the gear The lower tray 210 of the ice-making tray 200 directly connected to any one of the gear shafts in the set rotates in one direction and one end is twisted in an interfering operation, and the ice-making groove 15 is placed in the ice-making groove 15 by this twisting operation. Simultaneously with the ice being removed, the ice is dropped and stored in the ice storage container below the ice.

The ice maker 100 according to the present invention includes an ice maker body (not shown) forming the outer shape of the entire ice maker, an upper tray 210 that is rotatably mounted on one side of the ice maker body and forms an ice maker groove 15 for accommodating ice making water. and an ice-making tray 200 including a lower tray 220, a driving unit (not shown) that is accommodated in the ice maker body and provides rotational force to rotate the ice-making tray 200, and is formed on one side of the ice maker body The ice full detection unit 11 for detecting full ice in the box (not shown) and the water supply provided on one side of the ice maker main body to supply the ice making water to the ice making groove 15 of the ice making tray 200 through the water supply hole 212 . It may be configured to include a part (not shown). In the drawings of the present invention, the present invention is not limited thereto, and the structure of the storage unit to which the ice is moved after the ice is manufactured, and the Auger motor installed in the storage unit, the screw, and the ice box are omitted. did

Hereinafter, the twist type ice maker 100 according to the present invention will be described in more detail with reference to the drawings.

The ice-making tray 200 according to the present invention may be configured to include a pair of upper tray 210 and lower tray 220 that are mutually detachable. The upper tray 210 and the lower tray 220 of the ice-making tray 200 may be coupled to each other to form a circular ice-making groove 15 . The ice-making grooves 15 may be formed in the shape of a plurality of concave grooves spaced apart from each other in the longitudinal direction of the ice-making tray 200 , and preferably have a circular or oval cross-section.

3(a) to 3(c) are schematic partial perspective views of a twist type ice-making tray according to an embodiment of the present invention, and FIG. 4 is a perspective view of a detection sensor coupling part according to an embodiment of the present invention, FIG. 5 is a perspective view of a fastening means of a twist-type ice maker according to an embodiment of the present invention, and FIGS. 6 to 8 are cross-sectional views of a detection sensor fastening part of a twist-type ice maker according to various embodiments of the present invention.

Referring to these drawings, the ice-making tray 200 of the ice maker 100 according to the present invention includes an upper tray 210 in which a water supply guide part (not shown), a water supply hole 212 and an air hole 211 are formed, and the upper tray. 210 and one side of which is rotatably mounted in a fixed state, the lower tray 220 and the upper tray 210 with an open lower portion may be configured to include a sensor coupling unit 300 formed on one upper side of the upper side there is. Here, the cooling unit 20 may be formed in contact with the upper side of the upper tray 210 in a shape in which the cooling unit 20 is spirally wound.

In some cases, when the lower tray 220 of the ice-making tray 200 rotates around the driving rotation shaft 221 on one side of the ice-making tray 200 of the ice maker 100 according to the present invention, it expands and contracts with a predetermined elastic force. Alternatively, a pressure spring (not shown) may be formed to be restored.

The upper tray 210 has a curved portion forming an ice-making groove 15, and the ice-making groove 15 may be formed in the shape of a plurality of concave grooves spaced apart from each other in the longitudinal direction of the ice-making tray 200. there is. Here, the detection sensor coupling part 300 according to the present invention may be formed in the curved portion of the concave shape of the ice-making groove 15 .

Specifically, a portion of the upper tray 210 is formed with a hole (H) in an open shape, and the detection sensor fastening part 300 according to the present invention may be formed in the hole (H) portion. Here, the detection sensor coupling part 300 includes a plate-shaped bracket 310 formed in a size corresponding to the size of the hole H, a pair of detection sensors 320 and a detection sensor formed in the plate-shaped bracket 310 ( It may be configured to include a fastening plate 331 for coupling the 320 to the plate-shaped bracket 310 . At this time, according to the present invention, preferably, the upper tray 210 is formed of a metal material, the detection sensor coupling part 300 may be formed of a resin injection material, and the upper tray 210 and the detection sensor coupling part ( A sealing member (not shown) may be formed on the contact surface of the 300 ) to increase the sealing force.

According to the present invention, the above-described detection sensor 320 may be a water level sensor (S), a temperature sensor or a energization sensor. However, depending on the case, the detection sensor 320 may be installed in parallel with the water level detection sensor (S) including the temperature detection function at the same time or in the same area. Here, the energization sensor may mean an electrode for energization itself.

Here, in the ice maker 100 of the present invention, at least one electrode is formed on one side of the upper tray, so that the supply of water by voltage supply or capacitance change can be controlled. In the case of the capacitive water supply control method, it can be controlled by being connected to a power supply that can be installed in the control unit or the driving unit 50 . In some cases, in the case of the water supply control method by the energization method, by arranging a energized electrode on the upper side of the ice-making tray 210 and placing a temperature sensor on a relatively low portion, the ice-making groove 15 through the temperature sensor. of ice can be detected more accurately.

A fastening hole 331-1 into which a separate external bolt is inserted is formed in the fastening plate 331, and a fastening hole (not shown) is also formed in the plate-shaped bracket 310 corresponding to the fastening hole 331-1. can Accordingly, while the external bolt passes through the fastening hole 311-1 and the fastening hole of the plate-shaped bracket 310 in turn, the sensor 320 is inserted into the fastening plate 331 and screwed into the plate-shaped bracket 310. can be combined. At this time, a separate additional bolting part 350 may be screw-coupled to the upper portion of the plate-shaped bracket 310 in order to improve the sealing force through more robust fastening.

Here, as shown in FIGS. 3(b) and 3(c), an insertion hole 211h into which the sensor unit 320 can be inserted is formed in a portion of the upper tray 210, and the detection sensor fastening unit ( 300 may have a structure in which the bolting part 350 is coupled. That is, a separate fastening member (not shown) is coupled to the upper curved portion of the upper tray 210, and a fixing member (not shown) to which the sensor unit 320 can be coupled can be fastened to the upper portion of the fastening member. . Accordingly, after the sensor unit 320 passes through the fastening member through the fixing member, it may extend into the ice making groove 15 through the insertion hole 211h of the upper tray 210 . That is, the ice maker 100 according to the present invention is characterized in that the sensor coupling unit 300 is mounted inside the ice making groove 15 from the outside of the ice making tray 210 .

9 to 13 are partial cross-sectional views of a twist-type ice maker according to various embodiments of the present invention, and FIG. 14 is a cross-sectional view of a case in which a detection sensor of the twist-type ice maker according to an embodiment of the present invention is incorporated.

Referring to these drawings, the ice-making tray 200 according to the present invention may be configured to include a pair of upper tray 210 and lower tray 220 that are formed to be mutually detachable. The upper tray 210 and the lower tray 220 of the ice-making tray 200 may be coupled to each other to form a circular ice-making groove 15 . The ice-making grooves 15 may be formed in the shape of a plurality of concave grooves spaced apart from each other in the longitudinal direction of the ice-making tray 200 , and preferably have a circular or oval cross-section. In the adjacent ice-making grooves 15 , ice-making water flowing in from the water supply hole 211 through a separate through-hole (not shown) can be continuously supplied.

The water level sensor S may be formed in the concave groove-shaped portion of the upper case 210 forming the ice-making groove 15 . A plurality of the water level sensor S may be provided to detect the level of the ice-making water flowing into the ice-making groove 15 and control the water supply through a controller (not shown).

Here, the water level sensor (S) according to the present invention penetrates through the upper tray 210 and extends to the inner peripheral surface 15-1 of the ice-making groove 15 to form a close-fitting facing portion S-1. And, as shown in FIG. 14 , the facing portion S-1 may be formed in a polygonal shape that does not rotate when screwed together.

Above, a specific embodiment of the present invention has been described in detail with reference to the accompanying drawings. However, the embodiment of the present invention is not necessarily limited by the above-described embodiment, and it is natural that various modifications and implementations within an equivalent range are possible by those skilled in the art to which the present invention pertains. will be. Therefore, the true scope of the present invention will be determined by the claims to be described later.

1: refrigerator 8, 9: door
11: Full ice detection unit 15: Ice making home
15-1: ice-making groove inner circumferential surface 20: cooling unit
50: driving unit 100: ice making device
200: ice-making tray 210: upper tray
211: air hole 212: water supply hole
215: rotation hinge shaft 219: water induction part
220: lower tray 221: drive rotation shaft
300: detection sensor fastening part 310: plate-shaped bracket
311: fastening part 320: sensor part
330: fastening means 331: fastening plate
350: bolt 370: case
S: water level sensor S-1: detection unit

Claims (28)

An ice maker mounted on a cooling matrix, comprising:
ice machine body;
an ice-making tray rotatably mounted on one side of the ice maker body and forming an ice-making groove in which ice-making water is accommodated;
at least one heater unit and a cooling unit formed on at least a portion of the upper tray;
at least one driving unit providing a rotational force to rotate the rotation hinge shaft of the ice tray; and
An ice maker comprising: at least one water level sensor formed on one side of the ice-making tray, wherein at least a portion of the water level sensor extends into an ice-making groove of the ice-making tray to detect a water level. An ice maker mounted on a cooling matrix, comprising:
ice machine body;
an ice-making tray rotatably mounted on one side of the ice maker body and forming an ice-making groove in which ice-making water is accommodated;
at least one heater unit and a cooling unit formed on at least a portion of the upper tray;
at least one driving unit providing a rotational force to rotate the rotation hinge shaft of the ice tray; and
An ice maker comprising: at least one water level sensor formed on one side of the ice tray, wherein the water level sensor includes a temperature detection function and is integrally included in a separate, independent casing member. An ice maker mounted on a cooling matrix, comprising:
ice machine body;
an ice-making tray rotatably mounted on one side of the ice maker body, forming an ice-making groove in which ice-making water is accommodated, and having a vertically coupled structure or a pair of first and second ice-making trays coupled to the left and right;
at least one heater unit and a cooling unit formed on at least a portion of the upper tray;
at least one driving unit providing a rotational force to rotate the rotation hinge shaft of the ice tray; and
An ice maker comprising at least one energization sensor formed on one side of at least one of the first ice-making tray part and the second ice-making tray part. 4. The method according to any one of claims 1 to 3,
The ice maker further includes a temperature sensor formed on one side of the ice tray, wherein the temperature sensor is formed in the same or adjacent portion to the water level sensor. 5. The method of claim 4,
The temperature sensor is
outer case; and
Including; a sensor unit inserted into the case,
The ice maker is formed of a metal material and connected to a capacitive sensing element. 6. The method of claim 5,
The temperature sensor is an ice maker that is separately insulated. 3. The method of claim 1 or 2,
and the ice maker includes a structure in which the ice tray is vertically coupled or a pair of first and second ice tray parts coupled to the left and right. 8. The method of claim 7,
The water level sensor is formed in at least one of a first ice-making tray part and a second ice-making tray part of the ice-making tray. 4. The method of claim 3,
The energization sensor has a face part that is in close contact with an inner surface of the ice maker, and the face part has a shape that does not flow due to rotation by an external force. The method of claim 1,
An ice maker having an insertion groove formed at one side of the ice tray so that at least a portion of the water level sensor is inserted. 4. The method according to any one of claims 1 to 3,
The ice maker is an ice maker that includes at least one of a metal material, a rubber material, and a resin. 4. The method according to any one of claims 1 to 3,
An ice maker in which ice-making water is supplied to the ice-making tray in a fixed amount through multi-stage water supply control. 4. The method according to any one of claims 1 to 3,
An ice maker having a water supply unit provided at one side of the ice maker body for supplying ice making water to the ice making groove. 4. The method according to any one of claims 1 to 3,
The ice maker includes at least one of cooling and hot gas as a refrigerant. 4. The method according to any one of claims 1 to 3,
The ice making groove of the ice making tray has a circular, polygonal, diamond or oval cross section. 4. The method according to any one of claims 1 to 3,
The driving unit is an ice maker operated by an automatic or manual lever. 4. The method according to any one of claims 1 to 3,
The heater unit is an ice maker including a silicon cord heater or a planar heater. 18. The method of claim 17,
The heater unit is formed on an upper tray of the ice-making tray, and is radially formed in a curved portion forming the ice-making groove. 19. The method of claim 18,
The heater is an ice maker formed in a spiral shape. 4. The method according to any one of claims 1 to 3,
An ice maker in which a heater seating portion for supporting the heater is formed in the ice-making tray at a curved portion where the ice-making groove is formed. 4. The method according to any one of claims 1 to 3,
An air hole penetrating through the ice making groove is formed in a curved portion of the ice tray where the ice making groove is formed. 4. The method according to any one of claims 1 to 3,
The ice maker further includes an upper cover in which the water supply guide unit communicating with the air hole is formed on the ice tray. The method of claim 1,
The ice maker is electrically connected to the body of the ice maker and the heater by a silicon wire. 24. The method of claim 23,
The ice maker is provided in a separate hinge rotation cap member for the power connection part of the heater. 4. The method according to any one of claims 1 to 3,
An ice maker that controls the heater unit formed on the upper tray to generate crystal ice by controlling the ice making time of the ice maker to generate crystal ice. 4. The method according to any one of claims 1 to 3,
An ice maker in which a plurality of ice making grooves are formed in one direction, and a water supply communication part is formed to communicate with each other. 4. The method according to any one of claims 1 to 3,
The water level sensor extends from the outside to the inside of the ice maker and is mounted on the ice maker. A refrigerator comprising the ice maker according to any one of claims 1 to 27.

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