KR20220105711A - Refrigerator and control method thereof - Google Patents

Abstract

The present invention relates to a refrigerator and a refrigerator control method, which may comprise: a cabinet having a cold storage chamber which is cooled by cold air supplied by a cold storage chamber evaporator and a cold storage chamber fan, and a freezing chamber which is cooled by cold air supplied by a freezing chamber evaporator and a freezing chamber fan; a pair of doors which open and close the cold storage chamber by means of rotation; a filler which is provided at one door of the pair of doors, and covers the gap between the pair of doors in a state in which the pair of doors are closed; a filler heater provided in the filler; and a control unit which controls the movement of the cold storage chamber fan, the freezing chamber fan, the filler heater and a compressor. Here, the control unit, during the defrosting operation of the cold storage chamber evaporator, in a state in which the compressor is stopped, turns on the cold storage chamber fan and the filler heater, such that air inside the cold storage chamber may circulate to pass the cold storage chamber evaporator. Therefore, electricity consumption may be reduced.

Description

Refrigerator and control method of refrigerator {Refrigerator and control method thereof}

The present invention relates to a refrigerator and a method for controlling the refrigerator.

BACKGROUND ART In general, a refrigerator is a home appliance that can store food at a low temperature in an internal storage space that is shielded by a door. To this end, the refrigerator is configured to store the stored food in an optimal state by cooling the inside of the storage space using cold air generated through heat exchange with the refrigerant circulating in the refrigeration cycle.

Recently, refrigerators are gradually becoming larger and multifunctional according to changes in dietary habits and the trend of luxury products, and refrigerators equipped with various structures and convenient devices that allow users' convenience and efficient use of internal space are being released. .

In addition, a refrigerator is a device to which power is supplied at all times, and various structures and control methods have been developed to reduce power consumption due to the nature of its use.

Representatively, in Korean Patent Registration No. 10-0238059, when the internal temperature of the refrigerator in the refrigerator reaches the set temperature after the compressor is turned off, the fan in the refrigerator is turned on for a predetermined time to prevent frost from freezing in the evaporator of the refrigerator, It is a defrosting method of refrigerators that improves the natural defrost performance.

However, when the ice maker is disposed in the refrigerating compartment area, cold air for ice making is directed from the freezing compartment to the ice maker. At this time, the duct through which the cold air flows passes through the refrigerating compartment area, thereby affecting the temperature in the refrigerator at the corresponding location. In addition, even during operation for natural defrosting, cold air of low temperature penetrates into the refrigerating chamber side, and natural defrosting may not be smoothly performed. As a result, there is a problem in that the defrost reliability is lowered and power consumption is increased.

SUMMARY OF THE INVENTION An object of the present invention is to provide a refrigerator and a method for controlling a refrigerator capable of reducing power consumption by improving defrosting operation efficiency.

SUMMARY OF THE INVENTION An object of the present invention is to provide a refrigerator and a control method of a refrigerator that can provide additional heat during a defrosting operation by operating a filler heater during a defrosting operation.

SUMMARY OF THE INVENTION An object of the present invention is to provide a refrigerator and a control method of a refrigerator capable of shortening a defrosting operation time in a refrigerator in which a cold air flow path toward an ice maker is formed in a refrigerating compartment area.

A refrigerator according to an embodiment of the present invention includes a cabinet in which a refrigerating compartment cooled by cold air supplied by a refrigerating compartment evaporator and a refrigerating compartment fan, and a freezing compartment cooled by cold air supplied by the freezing compartment evaporator and the freezing compartment fan are formed; a pair of doors for opening and closing the refrigerating compartment by rotation; a filler provided in any one of the pair of doors and shielding between the pair of doors when the pair of doors are closed; a filler heater provided inside the filler; and a control unit controlling operations of the refrigerating compartment fan, the freezing compartment fan, the filler heater, and the compressor, wherein the control unit turns on the refrigerating compartment fan and the filler heater while the compressor is stopped during a defrosting operation of the refrigerating compartment evaporator. Air in the refrigerating compartment may be circulated to pass through the refrigerating compartment evaporator.

The controller may control the filler heater to be turned on and off according to the temperature of the outside air sensed by the outdoor temperature sensor, and to maintain an on state during the defrosting operation.

The controller may control the filler heater to maintain an on state until a temperature detected by the defrost temperature sensor reaches a set temperature during the defrosting operation.

During the defrosting operation, when the temperature sensed by the defrost temperature sensor reaches a first set temperature, the controller turns off the filler heater, then performs a rapid cooling operation of the refrigerating compartment, and restarts the filler heater after the rapid cooling operation is completed. After being turned on, when the temperature sensed by the defrost temperature sensor reaches the second set temperature, it may be turned off.

The second set temperature may be set higher than the first set temperature.

The first set temperature may be 3 ℃, the second set temperature may be set to 5 ℃.

The controller may control the compressor to be operated for a set time at a maximum output during the rapid cooling operation.

An ice maker for making ice using automatically supplied water and an ice making channel for supplying cold air from the freezing chamber evaporator to the ice maker may be provided in the refrigerating compartment area.

an ice-making chamber in which an ice maker for making ice is accommodated in the refrigerating chamber door and forming an insulating space; and a dispenser communicating with the ice making chamber to take out ice made from the outside, and the cabinet may include an ice making channel for supplying cold air for ice making by communicating the freezing chamber and the ice making chamber.

At least a portion of the ice making passage may be formed to pass through an area of the refrigerating compartment.

The ice making passage may include a supply duct communicating with a space in which the freezing chamber evaporator is disposed and supplying cool air generated by the freezing chamber evaporator; and a return duct that communicates with the freezing chamber and returns air from the ice-making chamber to the freezing chamber, openings of the supply duct and the return duct are exposed through a wall of the refrigerator compartment, and the ice-making chamber is in a closed state with the refrigerator compartment door closed. may communicate with the inner side of the

During the defrosting operation, the refrigerant discharged from the compressor may be supplied to the freezing chamber evaporator, and cold air may be supplied to the ice making chamber through the supply duct.

The filler heater may provide heat to the inside of the refrigerating compartment in an on state.

The control method of a refrigerator according to an embodiment of the present invention is a control method of a refrigerator including a filler for opening and closing a refrigerating compartment by a pair of refrigerating compartment doors, and shielding between the pair of refrigerating compartment doors when the pair of refrigerating compartment doors are closed In the following, the defrost signal input step of starting the defrosting operation during the normal operation; turning off the compressor according to the defrost signal input and turning on the refrigerating compartment fan to circulate air in the refrigerating compartment through the evaporator; turning on the filler heater to provide heat to the inside of the refrigerating compartment; maintaining the filler heater in an on state until the detection temperature of the defrost temperature sensor that detects the temperature of the evaporator reaches a set temperature; and when the temperature detected by the defrost temperature sensor reaches a set temperature, the filler heater is turned off to end the defrost operation and return to the normal operation.

During the normal operation, the compressor and the fan may be turned on and off so that the temperature of the refrigerating compartment is maintained at a set temperature.

During the normal operation, the filler heater may be turned on/off according to an external temperature.

In a state in which the filler heater is turned on, the first defrosting operation step is performed until the detection temperature of the defrost temperature sensor reaches the first set temperature, and when the first defrosting operation step is completed, the filler heater is turned off, and the compressor is turned on. After cooling, a rapid cooling operation step of cooling the inside of the refrigerator for a set time with the refrigerating compartment fan turned on may be performed, and a second defrosting operation step may be performed.

The second set temperature may be set higher than the first set temperature.

During the rapid cooling operation, the compressor may be operated at maximum output.

The second defrosting operation step may be performed for a longer time than the first defrosting operation step.

According to the refrigerator and the control method of the refrigerator according to the embodiment of the present invention, the following effects can be expected.

According to an embodiment of the present invention, when a defrosting operation is performed to remove the frost formed on the refrigerating compartment evaporator, the filler heater is turned on to provide heat to the inside of the refrigerating compartment. Accordingly, air in the refrigerating compartment heated to the refrigerating compartment evaporator may be supplied by the operation of the refrigerating compartment fan, and natural defrosting efficiency inside the refrigerating compartment may be improved.

That is, through the defrosting operation, power consumption can be significantly reduced compared to the conventional method in which the refrigerator compartment evaporator is directly heated by a heater. In addition, even in the case of natural defrosting, additional heat can be input into the refrigerating compartment using a filler heater, thereby reducing the defrosting operation time to reduce power consumption and maintaining the food in the refrigerating compartment in an optimal state. .

In particular, the filler heater is disposed to prevent condensation on the pair of refrigerating compartment doors, and can be used for the defrosting operation as well as preventing dew on the refrigerating compartment door side. There is an advantage that the efficiency of the defrost operation can be significantly improved without changing it.

When an ice-making chamber for making ice is provided on the door of the refrigerating chamber, and an ice-making passage for supplying cold air from the freezing chamber evaporator to the ice-making chamber is disposed on a side surface of the cabinet, A portion is positioned so that cold air can be transferred to the inside of the refrigerator.

The cold air delivered into the refrigerator is not a problem in normal normal operation, but natural defrosting for heating the refrigerating compartment evaporator by forcibly supplying air from the refrigerating compartment may cause a problem in that the defrosting time becomes longer. As a result, it is possible to effectively heat the inside of the refrigerating chamber even during natural defrosting by supplying a greater amount of heat than the cold air transmitted through the ice making passage into the refrigerating chamber, thereby improving the efficiency of the defrosting operation.

That is, in the embodiment of the present invention, even when the filler heater is operated during the defrosting operation, an ice maker is disposed in the refrigerator compartment door, and an ice making passage is disposed in the refrigerator compartment region, the defrosting operation efficiency is not reduced. This has the advantage of allowing the defrost operation to be performed effectively.

In addition, the defrosting operation may be performed by dividing the first defrosting operation step, the rapid cooling operation step, and the second defrosting operation step, and the first defrosting operation step and the second defrosting operation step are performed by the filler heater into the inside of the refrigerating compartment. Caloric input may be enabled. In particular, in the second defrosting operation step in which the target set temperature is high, the filler heater can quickly reach the target set temperature, and the time of the second defrosting operation step in which the target set temperature is relatively high is minimized to defrost. Maintaining performance has the advantage of preventing damage to food.

1 is a front view of a refrigerator according to an embodiment of the present invention.
2 is a view showing an open door of the refrigerator.
3 is a view showing the arrangement of an inner case of the refrigerator, an evaporator, and an ice maker side cold air flow path.
4 is a perspective view of a refrigerator compartment door of the refrigerator.
FIG. 5 is a cross-sectional view VV′ of FIG. 1 .
6 is a block diagram illustrating a flow of a control signal of a refrigerator according to an embodiment of the present invention.
7 is a flowchart sequentially illustrating a process of a defrosting operation of a refrigerator according to an embodiment of the present invention.
8 is a flowchart sequentially illustrating a defrosting operation process of a refrigerator according to another embodiment of the present invention.
9 is a graph illustrating a defrosting operation state when a filler heater is not operated in the refrigerator according to an embodiment of the present invention.
10 is a graph illustrating a defrosting operation state when a filler heater is operated in a refrigerator according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary 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 an embodiment of the present invention, a detailed description of a related known configuration or a function thereof will be omitted if it is determined that it is obvious to those skilled in the art.

In addition, the embodiment of the present invention will be described with an example of a refrigerator configured with a single door for convenience of explanation and understanding, and it is clarified in advance that the present invention is applicable to all refrigerators provided with a door.

Before the description, the direction is defined. In FIG. 1, the direction in which the door is arranged with respect to the cabinet is the front, the direction in which the cabinet is arranged relative to the door is the rear, the direction toward the floor surface on which the cabinet is installed is downward, and the direction away from the floor surface on which the cabinet is installed. can be called the upper side.

1 is a front view of a refrigerator according to an embodiment of the present invention. And, FIG. 2 is a view in which the door of the refrigerator is opened. 3 is a view showing the arrangement of the inner case of the refrigerator, the evaporator, and the cold air flow path on the side of the ice maker.

As shown in the drawings, the refrigerator 1 according to the embodiment of the present invention may have an external shape formed by a cabinet 10 forming a storage space and a door 20 opening and closing the storage space of the cabinet 10 . can

The cabinet 10 includes an outer case 101 made of a metal material forming an outer surface, and an inner case 102 made of a resin material that is coupled to the outer case 101 and forms a storage space inside the refrigerator 1 . can be configured. In addition, an insulating material is filled between the outer case 101 and the inner case 102 to insulate the storage space inside the cabinet 10 . In addition, the storage space is divided vertically based on the barrier 11 , and may be composed of an upper refrigerating compartment 12 and a lower freezing compartment 13 .

A refrigerating compartment evaporator 121 and a freezing compartment evaporator 131 may be respectively provided in the refrigerating compartment 12 and the freezing compartment 13 to independently cool the refrigerating compartment 12 and the freezing compartment 13 . The refrigerating compartment evaporator 121 and the freezing compartment evaporator 131 are connected to a compressor 34, and the refrigerant discharged from the compressor 34 may be branched and supplied to the refrigerating compartment evaporator 121 and the freezing compartment evaporator 131. .

In addition, a refrigerating compartment fan 122 and a freezing compartment fan 132 may be provided at one side of the refrigerating compartment evaporator 121 and the freezing compartment evaporator 131 . Accordingly, the air inside the refrigerating compartment 12 is circulated to pass through the refrigerating compartment evaporator 121 by the driving of the refrigerating compartment fan 122 , and the heat exchanged air passing through the refrigerating compartment evaporator 121 is transferred to the refrigerating compartment 12 . ) to cool the refrigerating compartment 12 to a set temperature.

In addition, the air inside the freezing compartment 13 is circulated to pass through the freezing compartment evaporator 131 by the driving of the freezing compartment fan 132 , and the heat exchanged air passing through the freezing compartment evaporator 131 is transferred to the freezing compartment 13 . ) to allow the freezing chamber 13 to be cooled to a set temperature.

The door 20 may include a refrigerating compartment door 21 and a freezing compartment door 22 that independently open and close the refrigerating compartment 12 and the freezing compartment 13, respectively. Both the refrigerating compartment door 21 and the freezing compartment door 22 have a structure capable of opening and closing the refrigerating compartment 12 and the freezing compartment 13 by rotation. For this purpose, the refrigerating compartment door 21 and the freezing compartment door 22 may be rotatably connected to the cabinet 10 by the hinge device 23 . In addition, the refrigerator compartment door 21 may be configured as a French-type door that can be configured to rotate independently of a pair on both left and right sides.

Meanwhile, a filler 26 may be provided at an end of the refrigerating compartment door 21 on one side of the pair of refrigerating compartment doors 21 . The filler 26 may be configured to shield a space between the refrigerating compartment doors 21 disposed on both left and right sides when the refrigerating compartment door 21 is closed.

To this end, the filler 26 may be provided at one end of the refrigerating compartment door 21 , that is, at one end far from the end at which the hinge device 23 is mounted. In addition, the filler 26 may be rotatably mounted. When the refrigerating compartment door 21 is opened, it is in a folded state, and when the refrigerating compartment door 21 is closed, it is in a closed state. (21) It becomes possible to shield between. For this purpose, a filler guide 103 may be formed at the front end of the upper surface of the refrigerating compartment 12 . The filler guide 103 may be located inside the center of the refrigerating compartment 12 , and when the refrigerating compartment door 21 is closed, the filler 26 is inserted to guide the rotation of the filler 26 . can be

Meanwhile, a dispenser 24 and an ice maker 252 may be provided in the refrigerating compartment door 21 on either side of the pair of refrigerating compartment doors 21 .

The dispenser 24 is provided on the front side of the refrigerator compartment door 21 and may be operated by a user from the outside to take out water or ice. In addition, an ice-making chamber 25 may be formed above the dispenser 24 .

The ice-making chamber 25 may be formed on the rear surface of the refrigerating chamber door 21 , form an insulating space in which ice is made and stored, and the ice maker 252 may be mounted therein. In addition, the ice-making chamber 25 may be configured to be opened and closed by the ice-making chamber door 251 .

In addition, the ice-making chamber 25 may communicate with the dispenser 24 , and thus the ice in the ice-making chamber 25 may be taken out by the operation of the dispenser 24 .

On the other hand, the ice-making chamber 25 is supplied with cold air produced by the freezing chamber evaporator 131 , so that the ice-making operation can be performed in the ice maker 252 . To this end, an ice making channel 14 for supplying cold air to the ice making chamber 25 may be formed in the cabinet 10 . The ice making passage 14 is provided between the outer case 101 and the inner case 102 and may be disposed in a state of being embedded in a heat insulating material. The ice making flow path 14 may be disposed on one side of the refrigerating compartment door 21 on one side of both left and right side surfaces.

In addition, the ice making passage 14 includes a supply duct 141 for supplying cold air to the ice making chamber 25 and a return duct 421 in which the air heat-exchanged in the ice making chamber 25 can be disposed. may include

The supply duct 141 may extend from a rear end of the freezing compartment 13 in which the freezing compartment evaporator 131 is disposed to one side of the refrigerating compartment 12 . That is, when the refrigerating compartment door 21 is closed, the space in which the freezing compartment evaporator 131 is disposed and the inside of the ice making compartment 25 communicate with each other, so that the cold air of the freezing compartment evaporator 131 can be guided to the ice making. .

The return duct 421 may extend from one side of the refrigerating compartment 12 in contact with the refrigerating compartment door 21 in a closed state to a lower portion of the freezing compartment 13 . That is, when the refrigerating compartment door 21 is closed, the inside of the freezing compartment 13 and the ice making chamber 25 communicates, so that the air heat-exchanged for ice making in the ice making chamber 25 is transferred to the freezing compartment 13 . can be guided.

The supply opening 141a and the return opening 142a formed at one end of the supply duct 141 and the return duct 421 constituting the ice making passage 14 are formed in the refrigerator compartment adjacent to the refrigerator compartment door 21 ( 12) can be opened from the side. In addition, the supply opening 141a and the return opening 142a may communicate with a flow path connected to the ice-making compartment 25 from the side of the refrigerating compartment door 21 when the refrigerating compartment door 21 is closed.

The other end of the supply duct 141 may be opened on one wall surface of the inner case 102 so as to communicate with the space disposed with the freezing chamber evaporator 131 to form a duct inlet 141b. In addition, the other end of the return duct 142 is opened in the lower portion of the freezing compartment 13 , that is, on one side wall of the inner case 102 adjacent to the suction port sucked into the freezing compartment evaporator 131 to form a duct outlet 142b. can do.

Accordingly, when the refrigerating compartment door 21 is closed, the space in which the ice-making compartment 25, the freezing compartment 13, and the freezing compartment evaporator 131 are disposed may form a communication path.

In order to have such a structure, at least a portion of the ice making passage 14 , ie, the supply duct 141 and the return duct 421 , may be positioned on a side wall of the refrigerating compartment 12 . Accordingly, the cold air flowing through the ice making passage 14 may penetrate into the refrigerating chamber 12 .

The cold air transferred to the inside of the refrigerating compartment 12 by the ice making passage 14 is not large enough to cause overcooling or storage performance of the refrigerating compartment 12 . However, during the defrosting operation for removing the frost formed on the refrigerating compartment evaporator 121 , the cold air transmitted from the ice making passage 14 may affect the defrosting operation S200 . In particular, in the case of natural defrosting, in which the high-temperature air in the refrigerating compartment 12 is forcibly introduced into the refrigerating compartment evaporator 121 to remove the frost of the refrigerating compartment evaporator 121, the efficiency of the defrosting operation (S200) due to the penetration of the cold air is reduced. can occur Accordingly, during the defrosting operation, the filler heater 265 disposed on the filler 26 may be operated to more efficiently perform the defrosting operation.

Hereinafter, the structure of the pillar 26 will be described in more detail with reference to the drawings.

4 is a perspective view of a refrigerator compartment door of the refrigerator. And, FIG. 5 is a cross-sectional view taken along line V-V' of FIG. 1 .

As shown in the drawing, a filler 26 may be provided in the refrigerating compartment door 21 in which the ice-making compartment 25 is formed among the pair of refrigerating compartment doors 21 arranged side by side on the left and right sides. The pillar 26 may be provided at one end opposite to one end at which the hinge device 23 is mounted among left and right both ends. That is, the filler 26 may be provided at one end of a pair of refrigerating compartment doors 21 adjacent to each other. It may be formed to shield the space between them.

The filler 26 may extend long in the vertical direction along one end of the refrigerating compartment door 21 . In addition, the filler 26 may be rotatably connected to the refrigerating compartment door 21 by a connecting member 262 . A plurality of the connecting members 262 may be disposed vertically. In addition, the connecting member 262 is provided with an elastic member so that when the refrigerating compartment door 21 is opened, the filler 26 is folded into the refrigerating compartment door 21 as shown in FIG. 4 .

In addition, a guide protrusion 261 may be formed on the upper end of the pillar 26 . The guide protrusion 261 may be inserted into the opening groove of the filler guide 103 when the refrigerator compartment door 21 is closed. A surface where the guide protrusion 261 and the filler guide 103 contact each other may be formed to be round, and the filler 26 may be rotated and unfolded while the refrigerator compartment door 21 is closed.

When the pair of refrigerating compartment doors 21 are all closed, the filler 26 may be unfolded as shown in FIG. 5 , and a gasket provided in the pair of refrigerating compartment doors 21 on the front side of the filler 26 . (27) can be closely adhered to each other. Accordingly, the filler 26 may prevent the cold air of the refrigerating compartment 12 from leaking through between the pair of refrigerating compartment doors 21 when the pair of refrigerating compartment doors 21 are closed.

Meanwhile, the filler 26 forms an external shape and may include a filler case 263 filled with a heat insulating material therein, and a filler cover 264 forming the front surface of the filler case 263 . The filler cover 264 may be formed of a steel material and may be in contact with the gasket 27 .

In addition, a filler heater 265 may be provided inside the filler case 263 . The filler heater 265 may heat the filler cover 264 , and may prevent condensation from occurring in the filler cover 264 and the gasket 27 in contact with the filler cover 264 .

A gasket 27 in contact with the filler 26 or the front surface of the filler 26 between the pair of refrigerating compartment doors 21 , which is relatively weak in insulation due to a temperature difference between the cold air inside the refrigerating compartment 12 and the outside air. ), but dew condensation may occur on one side, but the filler 26, particularly the front surface of the filler 26, is heated by the operation of the filler heater 265 to prevent condensation.

The filler heater 265 may be configured as a heater made of a wire material, and may be vertically disposed inside the filler 26 . In addition, the filler heater 265 may be disposed in a state in close contact with the front surface of the filler 26 . In addition, the filler heater 265 is disposed along the circumference of the filler 26 or is bent a plurality of times to form an overall length longer than the length of the filler 26 , The contact area can be increased.

Meanwhile, the on-off operation of the filler heater 265 may be controlled by the controller 30 . In addition, the filler heater 265 may detect the temperature of the external space in which the refrigerator 1 is installed, which is sensed by the outdoor temperature sensor 33 , and the operation period thereof may be determined. For example, when the temperature sensed by the outdoor temperature sensor 33 increases and the temperature difference with the refrigerating compartment 12 increases, the operation cycle of the filler heater 265 is shortened to effectively prevent condensation from occurring. can do. In addition, when the operating time of the filler heater 265 is prolonged, the internal temperature of the refrigerating compartment 12 may be increased. have.

In the filler heater 265, while the refrigerating compartment 12 is operating normally, the control unit 30 sets an operation cycle according to the outside air temperature sensed by the outdoor temperature sensor 33 to control it, but the refrigerating compartment evaporator Even when the natural defrosting operation of step 121 is performed, it is turned on so that the natural defrosting operation of the refrigerating compartment evaporator 121 can be performed more efficiently.

Hereinafter, the operation of the refrigerator 1 according to an embodiment of the present invention will be described in more detail with reference to the drawings.

6 is a block diagram illustrating a flow of a control signal of a refrigerator according to an embodiment of the present invention. 7 is a flowchart sequentially illustrating a process of a defrosting operation of a refrigerator according to an embodiment of the present invention.

As shown in the drawing, the refrigerator 1 may be operated so that the refrigerating compartment 12 and the freezing compartment 13 maintain set temperatures in a normal operation state. That is, the controller 30 controls the compressor 34 , the refrigerating compartment fan 122 , and the freezing compartment fan 132 according to the temperatures of the refrigerating compartment 12 and the freezing compartment 13 sensed by the internal temperature sensor 32 . The operation is controlled so that the refrigerating compartment 12 and the freezing compartment 13 can maintain a set temperature or temperature range.

In addition, the control unit 30 causes the filler heater 265 to operate at a set cycle according to the temperature sensed by the outdoor temperature sensor 33 so that dew condensation occurs in the adjacent portion between the pair of refrigerating compartment doors 21 . prevent it from becoming [S100]

Meanwhile, during the normal operation of the refrigerator 1 , moisture from food stored in the refrigerating compartment 12 or moisture introduced when the refrigerating compartment door 21 is opened and closed may be deposited on the refrigerating compartment evaporator 121 . . In addition, if the frost formed on the refrigerating compartment evaporator 121 grows, the cooling performance of the refrigerating compartment 12 may decrease. do.

In the present embodiment, the defrosting operation (S200) does not directly heat the refrigerating compartment evaporator 121 with a heater attached to the refrigerating compartment evaporator 121, but transfers air from the refrigerating compartment 12 having a high temperature to the refrigerating compartment evaporator 121. ) to remove the frost, and may be referred to as a natural defrost operation ( S200 ) in order to distinguish it from a defrost operation in which the refrigerating compartment evaporator 121 is directly heated using a heater.

The defrosting operation ( S200 ) may be performed at intervals set to prevent frost from growing in the refrigerating compartment evaporator 121 . For example, in the defrosting operation S200 , the controller 30 may determine an appropriate time by accumulating the operation time of the compressor 34 to input a defrosting signal. The defrosting operation (S200) may be performed every set period by the control unit 30, and not only the operating time of the compressor 34, but also the number of openings and closings of the refrigerator compartment door 21 or the internal temperature sensor 32 or It may be set to an adjusted period in consideration of the temperature detected by the defrost temperature sensor 31 . [S210]

When the start signal of the defrosting operation S200 is input from the control unit 30 , the control unit 30 stops the compressor 34 to stop supplying the refrigerant to the refrigerating compartment evaporator 121 . When the supply of cold air to the refrigerating compartment evaporator 121 is stopped, the temperature of the refrigerating compartment evaporator 121 is no longer lowered. Of course, the refrigerant discharged from the compressor 34 may be switched to be supplied to the freezing chamber evaporator 131. In this case, cold air can be supplied through the ice making passage 14 and the ice maker 252 ice making may be possible.

Also, in a state in which the compressor 34 is stopped, the controller 30 turns on the refrigerating compartment fan 122 . When the refrigerating compartment fan 122 is driven, the air inside the refrigerating compartment 12 may continuously flow into the refrigerating compartment evaporator 121 . At this time, the temperature of the refrigerating compartment 12 is 0° C. or higher, which is higher than that of the refrigerating compartment evaporator 121. Therefore, when supplied to the refrigerating compartment evaporator 121, the temperature of the refrigerating compartment evaporator 121 can be raised. do.

That is, as the refrigerating compartment fan 122 is driven, the high-temperature air inside the refrigerating compartment 12 flows into the refrigerating compartment evaporator 121 , passes through the refrigerating compartment evaporator 121 and is discharged back into the refrigerating compartment 12 . have. In addition, the temperature of the refrigerating compartment 12 is usually 3° C. to 5° C. When the high-temperature air inside the refrigerating compartment 12 is supplied to the refrigerating compartment evaporator 121, the temperature of the refrigerating compartment evaporator 121 rises, and thus the The frost formed on the refrigerating compartment evaporator 121 may be melted and removed. [S220]

In addition, the controller 30 turns on the filler heater 265 according to the input of the defrosting operation (S200) signal. The filler heater 265 operates while being turned on and off at a set cycle during the normal operation, but may be controlled to maintain an on state during the defrosting operation S200 by the controller 30 .

When the filler heater 265 is turned on, the front surface of the filler 26 may be heated by the filler heater 265 . At the same time, the heat of the filler 26 may penetrate into the inside of the refrigerating compartment 12 , and the refrigerating compartment 12 may be heated by the heat that penetrates into the refrigerating compartment 12 . In addition, the heated air inside the refrigerating compartment 12 may be continuously supplied to the refrigerating compartment evaporator 121 by the operation of the refrigerating compartment fan 122 .

That is, if the filler heater 265 is kept on during the defrosting operation (S200), the frost of the refrigerating compartment evaporator 121 can be more effectively removed, and the set temperature for completing the defrosting is reached. time can be shortened.

During the defrosting operation (S200), in a state in which the refrigerant supply to the refrigerating compartment evaporator 121 is cut off, the filler heater 265 is turned on to provide additional heat to the inside of the refrigerating compartment 12, and at the same time, the refrigerating compartment fan 122 As the air of the refrigerating compartment 12 at a continuously high temperature passes through the refrigerating compartment evaporator 121 , the temperature of the refrigerating compartment evaporator 121 is increased, and the frost formed on the refrigerating compartment evaporator 121 is removed. Meanwhile, the filler heater may be turned on simultaneously with the operation of turning off the compressor and turning on the refrigerating compartment fan. [S230]

The temperature of the refrigerating compartment evaporator 121 is increased by the continuous operation of the filler heater 265 and the refrigerating compartment fan 122 , and the temperature of the refrigerating compartment evaporator 121 can be detected by the defrost temperature sensor 31 . have.

When the defrosting operation (S200) is started, the temperature detected by the defrost temperature sensor 31 is a temperature below zero, and the frost is maintained, but by the driving of the refrigerator compartment fan 122 and the filler heater 265 The detection temperature of the defrost temperature sensor 31 is gradually increased. And, from when the detection temperature of the defrost temperature sensor 31 reaches 0° C. or higher, the frost that has been deposited on the refrigerating compartment evaporator 121 can be removed as it begins to melt.

The control unit 30 determines the completion of the defrosting operation S200 through the temperature sensed by the defrosting temperature sensor 31 . In the controller 30 , when the temperature sensed by the defrost temperature sensor 31 is lower than 3° C. to 5° C. corresponding to the temperature of the refrigerating compartment 12 , the filler heater 265 and the refrigerating compartment fan 122 are operated. It can be made to maintain the ON state continuously.

When the temperature sensed by the defrost temperature sensor 31 reaches a set temperature, for example, 3° C. to 5° C., the controller 30 removes the frost formed on the refrigerating compartment evaporator 121 sufficiently to remove the frost from the refrigerating compartment evaporator. It is determined that the temperature of (121) has risen, and it is possible to determine the completion of the defrosting operation (S200). [S240]

When the temperature detected by the defrost temperature sensor 31 reaches a set temperature is input, the control unit 30 turns off the filler heater 265 to complete the defrost operation (S200) and the defrost operation (S200) will end Also, when the filler heater 265 is stopped, the refrigerating compartment fan 122 may also be stopped. [S250]

And, when the defrosting operation ( S200 ) is completed, the normal operation is returned to cool the refrigerating compartment 12 . That is, driving of the compressor 34 is started to supply cold air to the refrigerating compartment evaporator 121 , and the refrigerating compartment fan 122 also starts to be driven to provide the refrigerating compartment evaporator 121 to the refrigerating compartment 12 . It provides cooling.

In addition, the operation of the compressor 34 and the refrigerating compartment fan 122 may be controlled according to the temperature detected by the internal temperature sensor 32 so that the refrigerating compartment 12 can maintain a set temperature.

On the other hand, in the defrosting operation ( S200 ), when the temperature of the refrigerating compartment 12 rises to an excessively high temperature at once, the storage state of the food stored in the refrigerating compartment 12 may not be maintained in an optimal state, and thus The defrosting operation ( S200 ′) may be performed by dividing it into a plurality of steps.

Hereinafter, another embodiment of the present invention in which the defrosting operation S200' is divided into a plurality of steps will be described. Among other embodiments of the present invention, the same reference numerals are used for the same configurations and processes as those of the above-described embodiments, and detailed descriptions thereof will be omitted.

8 is a flowchart sequentially illustrating a defrosting operation process of a refrigerator according to another embodiment of the present invention.

As shown in the drawing, the refrigerator 1 may operate normally so that the refrigerating compartment 12 and the freezing compartment 13 maintain a set temperature or temperature range. To this end, the controller 30 may control the operation of the compressor 34 , the refrigerating compartment fan 122 , and the freezing compartment fan 132 according to the temperature detected by the refrigerator temperature sensor. In addition, the controller 30 controls the operation of the filler heater 265 according to the detected temperature of the outdoor temperature sensor 33 to prevent dew condensation. [S100]

Meanwhile, the control unit 30 performs a defrosting operation (S200') at an appropriate time in order to prevent frost from forming on the refrigerator compartment evaporator 121 and lowering cooling efficiency while the refrigerator 1 is operating normally. do. The defrosting operation ( S200 ′) may include a first defrosting operation step 260 , a rapid cooling operation step 270 , and a second defrosting operation step 280 , which are initially performed.

The controller 30 may input a defrost signal by accumulating the operating time of the compressor 34 to determine an appropriate time for starting the defrosting operation S200 ′. The defrosting operation S200 ′ may be performed every set period by the control unit 30 , and the operating time of the compressor 34 as well as the number of openings and closings of the refrigerator compartment door 21 or the internal temperature sensor 32 . Alternatively, it may be set in consideration of the detected temperature of the defrost temperature sensor 31 . [S261]

When the start signal of the start of the defrosting operation, that is, the start signal of the first defrosting operation step 260 is input by the controller 30 , the controller 30 stops the compressor 34 to supply the refrigerator to the evaporator 121 . Refrigerant supply will be stopped. When the supply of cold air to the refrigerating compartment evaporator 121 is stopped, the temperature of the refrigerating compartment evaporator 121 is no longer lowered. Of course, the refrigerant discharged from the compressor 34 may be switched to be supplied to the freezing chamber evaporator 131. In this case, cold air can be supplied through the ice making passage 14 and the ice maker 252 ice making may be possible.

Then, the control unit 30 turns on the refrigerating compartment fan 122 . When the refrigerating compartment fan 122 is driven, the air inside the refrigerating compartment 12 may continuously flow into the refrigerating compartment evaporator 121 . At this time, the temperature of the refrigerating compartment 12 is 0° C. or higher, which is higher than that of the refrigerating compartment evaporator 121. Therefore, when supplied to the refrigerating compartment evaporator 121, the temperature of the refrigerating compartment evaporator 121 can be raised. do. When the temperature of the refrigerating compartment evaporator 121 rises, the frost deposited on the refrigerating compartment evaporator 121 can be melted and removed. [S262]

Then, the controller 30 turns on the filler heater 265 . The filler heater 265 is operated while being turned on and off at a set cycle during the normal operation ( S100 ), but may be controlled to maintain an on state during the first defrosting operation step 260 by the controller 30 .

When the filler heater 265 is turned on, the front surface of the filler 26 may be heated by the filler heater 265 . At the same time, the heat of the filler 26 may penetrate into the inside of the refrigerating compartment 12 , and the refrigerating compartment 12 may be heated by the heat that penetrates into the refrigerating compartment 12 . In addition, the heated air inside the refrigerating compartment 12 may be continuously supplied to the refrigerating compartment evaporator 121 by the operation of the refrigerating compartment fan 122 .

That is, if the filler heater 265 is kept on in the first defrosting operation step 260 , the frost of the refrigerating compartment evaporator 121 can be more effectively removed, and the first defrosting operation step 260 . ) to be completed, it becomes possible to shorten the time to reach the set temperature.

During the first defrosting operation step 260 , the filler heater 265 is turned on in a state in which the refrigerant supply to the refrigerating compartment evaporator 121 is cut off to provide additional heat to the inside of the refrigerating compartment 12 , and at the same time, the refrigerating compartment fan Reference numeral 122 increases the temperature of the refrigerating compartment evaporator 121 while continuously high-temperature air from the refrigerating compartment 12 passes through the refrigerating compartment evaporator 121 and removes the frost formed on the refrigerating compartment evaporator 121 . Meanwhile, the filler heater may be turned on simultaneously with the operation of turning off the compressor and turning on the refrigerating compartment fan. [S263]

The temperature of the refrigerating compartment evaporator 121 is increased by the continuous operation of the filler heater 265 and the refrigerating compartment fan 122 . At this time, the temperature of the refrigerating compartment evaporator 121 is sensed by the defrost temperature sensor 31 . can be

When the first defrosting operation step 260 is started, the temperature sensed by the defrost temperature sensor 31 is below zero and the frost is maintained, but the temperature of the refrigerator fan 122 and the filler heater 265 is The detection temperature of the defrost temperature sensor 31 is gradually increased by driving. And, from when the detection temperature of the defrost temperature sensor 31 reaches 0° C. or higher, the frost that has been deposited on the refrigerating compartment evaporator 121 can be removed as it begins to melt.

The control unit 30 determines the completion of the first defrosting operation step 260 through the temperature sensed by the defrosting temperature sensor 31 . When the temperature sensed by the defrost temperature sensor 31 is lower than 3° C., the control unit 30 may keep the filler heater 265 and the refrigerating compartment fan 122 continuously turned on.

When the temperature sensed by the defrost temperature sensor 31 reaches a set temperature, for example, 3° C., the control unit 30 determines that the first defrost operation step 260 has been sufficiently performed, and the first defrost operation Completion of step 260 is determined. [S264]

When the temperature detected by the defrost temperature sensor 31 reaches a first set temperature, the controller 30 turns off the filler heater 265 to complete the first defrosting operation step 260 . At this time, the refrigerating compartment fan 122 may also be stopped. [S265]

On the other hand, if the internal temperature of the refrigerating compartment 12 is continuously increased while the first defrosting operation step 260 is completed, the food stored in the refrigerating compartment 12 may deteriorate or be damaged. Accordingly, when the first defrosting operation step 260 is completed, the control unit 30 performs a rapid cooling operation step 270 for rapidly cooling the refrigerating compartment 12 .

For the rapid cooling operation step 270 , the controller turns off the filler heater 265 and turns on the compressor 34 and the refrigerating compartment fan 122 to cool the refrigerant generated in the refrigerating compartment evaporator 121 into the refrigerating compartment ( 12) will be supplied.

In this case, the rapid cooling operation step 270 may be performed for a short time for the efficiency of the subsequent second defrosting operation step 280, and may be operated at a temperature significantly lower than the target temperature during the normal operation (S100). have. For example, the rapid cooling operation step 270 may be performed until the temperature of the refrigerating compartment evaporator 121 detected by the defrost temperature sensor 31 is -20° C. or less, and in this case, the compressor 34 is operated at maximum output to rapidly cool the refrigerating compartment 12 .

The rapid cooling operation step 270 may be terminated when the defrost temperature sensor 31 or the internal temperature sensor 32 reaches a target temperature. Of course, if necessary, the rapid cooling operation step 270 may be performed for a set time regardless of the temperature. [270]

Meanwhile, when the rapid cooling operation step 270 is finished, the controller 30 again performs a second defrosting operation step 280 for additionally removing the remaining frost in the refrigerating compartment evaporator 121 .

When the control unit 30 receives a signal to resume the defrosting operation S200 ′, that is, the start signal of the second defrosting operation step 280 , the control unit 30 stops the compressor 34 to stop the refrigerating compartment evaporator. The refrigerant supply to (121) is stopped. When the supply of cold air to the refrigerating compartment evaporator 121 is stopped, the temperature of the refrigerating compartment evaporator 121 is no longer lowered. Of course, the refrigerant discharged from the compressor 34 may be switched to be supplied to the freezing chamber evaporator 131 .

Then, the control unit 30 turns on the refrigerating compartment fan 122 . When the refrigerating compartment fan 122 is driven, the air inside the refrigerating compartment 12 may continuously flow into the refrigerating compartment evaporator 121 . At this time, the temperature of the refrigerating compartment 12 is 0° C. or higher, which is higher than that of the refrigerating compartment evaporator 121. Therefore, when supplied to the refrigerating compartment evaporator 121, the temperature of the refrigerating compartment evaporator 121 can be raised. do. When the temperature of the refrigerating compartment evaporator 121 rises, the frost deposited on the refrigerating compartment evaporator 121 can be melted and removed. [S282]

Then, the controller 30 turns on the filler heater 265 . The filler heater 265 is turned on and off at a set cycle during the normal operation ( S100 ), but may be controlled to maintain an on state during the second defrosting operation step 280 by the controller 30 .

When the filler heater 265 is turned on, the front surface of the filler 26 may be heated by the filler heater 265 . At the same time, the heat of the filler 26 may penetrate into the inside of the refrigerating compartment 12 , and the refrigerating compartment 12 may be heated by the heat that penetrates into the refrigerating compartment 12 . In addition, the heated air inside the refrigerating compartment 12 may be continuously supplied to the refrigerating compartment evaporator 121 by the operation of the refrigerating compartment fan 122 .

That is, if the filler heater 265 is kept on in the second defrosting operation step 280 , the frost of the refrigerating compartment evaporator 121 can be more effectively removed, and the second defrosting operation step 280 . ) to be completed, it becomes possible to shorten the time to reach the set temperature.

During the second defrosting operation step 280 , in a state in which the refrigerant supply to the refrigerating compartment evaporator 121 is cut off, the filler heater 265 is turned on to provide additional heat to the inside of the refrigerating compartment 12 , and at the same time, the refrigerating compartment fan Reference numeral 122 increases the temperature of the refrigerating compartment evaporator 121 while continuously high-temperature air from the refrigerating compartment 12 passes through the refrigerating compartment evaporator 121 and removes the frost formed on the refrigerating compartment evaporator 121 . Meanwhile, the filler heater may be turned on simultaneously with the operation of turning off the compressor and turning on the refrigerating compartment fan. [S283]

The temperature of the refrigerating compartment evaporator 121 is increased by the continuous operation of the filler heater 265 and the refrigerating compartment fan 122 . At this time, the temperature of the refrigerating compartment evaporator 121 is sensed by the defrost temperature sensor 31 . can be

When the second defrosting operation step 280 starts, the temperature sensed by the defrost temperature sensor 31 may be in a state in which frost has formed at a temperature below zero, but the temperature of the refrigerator compartment fan 122 and the filler heater 265 may be The detection temperature of the defrost temperature sensor 31 is gradually increased by driving. And, from when the detection temperature of the defrost temperature sensor 31 reaches 0° C. or higher, the frost that has been deposited on the refrigerating compartment evaporator 121 can be removed as it begins to melt.

The control unit 30 determines the completion of the second defrosting operation step 280 through the temperature sensed by the defrosting temperature sensor 31 . When the temperature sensed by the defrost temperature sensor 31 is lower than the second set temperature, the control unit 30 may keep the filler heater 265 and the refrigerating compartment fan 122 continuously turned on. .

When the temperature sensed by the defrost temperature sensor 31 reaches a second set temperature, for example, 5° C., the control unit 30 determines that the second defrost operation step 280 has been sufficiently performed, and the second It is determined that the defrost operation step 280 is completed.

In this case, the second set temperature may be a temperature that is higher than the first set temperature and at which the removal of frost on the refrigerating compartment evaporator 121 is guaranteed, and the temperature inside the refrigerating compartment 12 is excessively increased. It may be out of range.

And, since the second set temperature of the second defrost operation step 280 is higher than the first set temperature, the second defrost operation step 280 is longer than the first defrost operation step 260 . It may be carried out over time. [S284]

When the temperature sensed by the defrost temperature sensor 31 reaches a second set temperature, the control unit 30 turns off the filler heater 265 to perform the first defrost operation step 260, that is, a defrost operation ( S200') is completed. At this time, the refrigerating compartment fan 122 may also be stopped. [S285]

And, when the defrosting operation (S200') is completed, the normal operation (S100) is returned to cool the refrigerating compartment 12 . That is, driving of the compressor 34 is started so that cold air can be supplied to the refrigerating compartment evaporator 121 , and the refrigerating compartment fan 122 is also started to be driven to move the refrigerating compartment evaporator 121 into the refrigerating compartment 12 . It provides cooling.

In addition, the operation of the compressor 34 and the refrigerating compartment fan 122 may be controlled according to the temperature detected by the internal temperature sensor 32 so that the refrigerating compartment 12 can maintain a set temperature.

Hereinafter, a change in the state of the refrigerator during the defrosting operation of the refrigerator 1 according to the above-described embodiment of the present invention will be described with reference to the drawings.

9 is a graph illustrating a defrosting operation state when a filler heater is not operated in the refrigerator according to an embodiment of the present invention. And, FIG. 10 is a graph showing a defrosting operation state when the filler heater is operated in the refrigerator according to an embodiment of the present invention.

As shown in the figure, when the filler heater 265 is not driven while the defrosting operation is being performed, as shown in FIG. In order to reach the set temperature (5°C) where all the frost can be removed, the defrost operation can be completed after about 6 hours.

However, as in the embodiment of the present invention, when the defrosting operation S200 ′ is performed, when the filler heater 265 is turned on, an additional amount of heat may be provided to the refrigerating compartment 12 , as shown in FIG. 10 . , the defrost operation (200,200') is performed for approximately 4 hours in order to reach the set temperature (5°C) at which the detected temperature of the defrost temperature sensor 31 can remove all the frost on the refrigerating compartment evaporator 121. It may be terminated after implementation.

In detail, in the defrosting operation S200 ′, the filler heater 265 is turned on during the first defrosting operation step, so that the temperature of the filler heater 265 and the detection temperature of the defrost temperature sensor 31 are continuously increased. will do At this time, the first defrosting operation step 260 is performed until the detection temperature of the defrost temperature sensor 31 reaches a first set temperature (T1, 3° C.), and the filler heater operates at a first filter temperature ( T3, 8°C) is continuously increased.

After the first defrosting operation step 260 is completed, the rapid cooling operation step S270 is performed, so that the compressor 34 and the refrigerating compartment fan 122 are operated, and the filler heater 265 is turned off. Accordingly, the temperatures of the defrost temperature sensor 31 and the filler heater 265 are decreased.

When the rapid cooling operation step S270 is completed, the second defrosting operation step 280 may be performed. During the second defrosting operation step 280 , the filler heater 265 is turned on, so that the temperature of the filler heater 265 and the detection temperature of the defrost temperature sensor 31 are continuously increased. In this case, the second defrosting operation step 280 is performed until the detection temperature of the defrost temperature sensor 31 reaches a first set temperature (T2, 5° C.), and the filler heater 265 is a second It continues to rise until the filter temperature (T4, 12°C) is reached.

The second set temperature T2 is relatively higher than the first set temperature T1 , so the second defrost operation step 280 may be performed longer than the first defrost operation step S260 . In addition, the filler heater 265 is continuously turned on until the second defrosting operation step 280 is completed to continuously provide heat to the inside of the refrigerating compartment 12 .

When the second defrosting operation step 280 is finished, the control unit 30 turns off the filler heater 265 , and the compressor 34 and the refrigerating compartment fan 122 are driven to restart the refrigerating compartment 12 . It cools and returns to the normal operation.

Although the figure shows one time of the defrosting operation ( S200 , S200 ′), the defrosting operation ( S200 , S200 ′) may be repeatedly performed at a set period by the control unit 30 .

Claims (20)

a cabinet in which a refrigerating compartment cooled by cold air supplied by the refrigerating compartment evaporator and the refrigerating compartment fan and a freezing compartment cooled by the cold air supplied by the freezing compartment evaporator and the freezing compartment fan are formed;
a pair of doors for opening and closing the refrigerating compartment by rotation;
a filler provided in any one of the pair of doors and shielding between the pair of doors when the pair of doors are closed;
a filler heater provided inside the filler;
a controller for controlling operations of the refrigerating compartment fan, the freezing compartment fan, the filler heater, and the compressor;
The control unit is configured to perform a defrosting operation of the refrigerating compartment evaporator,
A refrigerator in which the refrigerating compartment fan and the filler heater are turned on while the compressor is stopped to circulate the air in the refrigerating compartment through the refrigerating compartment evaporator.
The method of claim 1,
The controller is configured to turn the filler heater on and off according to the temperature of the outside air sensed by the outdoor temperature sensor, and control the refrigerator to maintain an on state during the defrosting operation.
The method of claim 1,
The controller may control the filler heater to maintain an on state until a temperature detected by the defrost temperature sensor reaches a set temperature during the defrosting operation.
The method of claim 1,
During the defrosting operation, the control unit is
When the temperature sensed by the defrost temperature sensor reaches a first set temperature, the filler heater is turned off and then the refrigerating compartment is rapidly cooled;
A refrigerator that turns on the filler heater again after completion of the rapid cooling operation and turns it off when the temperature sensed by the defrost temperature sensor reaches a second set temperature.
5. The method of claim 4,
The second set temperature is set higher than the first set temperature refrigerator.
6. The method of claim 5,
The first set temperature is 3 ℃, the second set temperature is set to 5 ℃ refrigerator.
5. The method of claim 4,
The control unit controls the compressor to operate at maximum output for a set time during the rapid cooling operation.
The method of claim 1,
An ice maker for making ice using automatically supplied water in the refrigerator compartment area;
and an ice making passage for supplying cold air from the freezing chamber evaporator to the ice maker.
The method of claim 1,
On the refrigerator door,
an ice making room in which an ice maker for making ice is accommodated and forming an insulating space;
and a dispenser communicating with the ice-making chamber and capable of taking out the ice-made ice from the outside;
and an ice making channel configured to supply cold air for ice making by communicating the freezing chamber and the ice making chamber in the cabinet.
10. The method of claim 9,
At least a portion of the ice making passage is formed to pass through an area of the refrigerating compartment.
10. The method of claim 9,
The ice making flow path is
a supply duct communicating with a space in which the freezing chamber evaporator is disposed and supplying cold air generated in the freezing chamber evaporator;
and a return duct that communicates with the freezing chamber and returns air from the ice-making chamber to the freezing chamber,
The openings of the supply duct and the return duct are exposed through a wall of the refrigerating compartment, and communicate with the inside of the ice-making compartment when the refrigerating compartment door is closed.
12. The method of claim 11,
During the defrosting operation,
The refrigerant discharged from the compressor is supplied to the freezing chamber evaporator,
A refrigerator in which cold air is supplied to the ice making chamber through the supply duct.
The method of claim 1,
The filler heater is a refrigerator that provides heat to the inside of the refrigerating compartment in an on state.
A method for controlling a refrigerator, comprising: a filler for opening and closing a refrigerating compartment by a pair of refrigerating compartment doors and shielding between the pair of refrigerating compartment doors when the pair of refrigerating compartment doors are closed;
a defrost signal input step of starting a defrosting operation during normal operation;
turning off the compressor according to the defrost signal input and turning on the refrigerating compartment fan to circulate air in the refrigerating compartment through the evaporator;
turning on the filler heater to provide heat to the inside of the refrigerating compartment;
maintaining the filler heater in an on state until the detection temperature of the defrost temperature sensor that detects the temperature of the evaporator reaches a set temperature; and
When the temperature detected by the defrost temperature sensor reaches a set temperature, the filler heater is turned off to end the defrost operation and return to the normal operation.
15. The method of claim 14,
A control method of a refrigerator in which the compressor and the fan are turned on and off so that the temperature of the refrigerating compartment is maintained at a set temperature during the normal operation.
16. The method of claim 15,
A control method of a refrigerator in which the filler heater is turned on and off according to an outside temperature during the normal operation.
15. The method of claim 14,
In a state in which the filler heater is turned on, the first defrost operation step is performed until the detection temperature of the defrost temperature sensor reaches the first set temperature,
When the first defrosting operation step is completed, the filler heater is turned off, the compressor is turned on, and the refrigerator compartment fan is turned on, and a rapid cooling operation step of cooling the inside of the refrigerator is performed for a set time,
A control method of a refrigerator performing the second defrost operation step.
18. The method of claim 17,
The method of controlling the refrigerator in which the second set temperature is set higher than the first set temperature.
18. The method of claim 17,
A control method of a refrigerator in which the compressor operates at a maximum output during the rapid cooling operation.
15. The method of claim 14,
The second defrosting operation step is performed for a longer period of time than the first defrosting operation step.

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