KR102328159B1 - Refrigerator - Google Patents

Abstract

The refrigerator of the present invention comprises: a cabinet forming a storage space; a main door opening and closing the storage space and having an opening communicating with the storage space; a sub-door rotatably mounted on the main door to open and close the opening; a panel assembly provided on the sub-door and having a front panel and a rear panel through which the inside of the opening can be seen from the outside; and a dew condensation removing unit extending from the rear side of the storage space toward the rear panel to guide air toward the rear panel, wherein the air discharged from the dew condensation removing unit passes through the opening of the main door to the rear panel can be reached

Description

refrigerator {Refrigerator}

The present invention relates to a 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 so that the stored food can be stored in an optimal state by cooling the inside of the storage space using cold air generated through heat exchange with a refrigerant circulating in the refrigeration cycle.

Recently, refrigerators having an auxiliary door or a home bar door together with a door for shielding the storage space have been released. A separate storage space is provided in the door of the refrigerator, and only the auxiliary door or home bar door is opened to enter the storage space. Accessible refrigerators are also available.

In addition, a see-through window is formed on a front part of the auxiliary door or home bar door to prevent the cold air in the refrigerator from leaking to the outside, so that the food stored in the storage space from the outside without the user opening the door or the auxiliary door Refrigerators that allow you to check the

However, when the door or auxiliary door is opened and then closed again, dew condensation may be generated on the viewing window due to the temperature difference between the outside and the viewing window, and this phenomenon is further aggravated in a hot or humid space.

*Condensation generated on the viewing window refracts light and distorts or blurs the shape of the food stored in the refrigerator or door basket, thus making it difficult for the user to accurately check the inside of the refrigerator or door basket through the viewing window.

In the prior art, dew condensation is evaporated by cold air discharged from the rear wall of the storage space to cool the inside of the storage space. there is a problem.

One object of the present invention is to prevent the problem that the shape of the food placed inside the door basket or the storage space is blurred or refracted and viewed through the dew condensation generated in the panel assembly.

One object of the present invention is to quickly remove dew condensation by blowing air directly toward the surface of the panel assembly.

An object of the present invention is to accurately determine whether dew condensation is formed on the surface of a panel assembly.

The present invention in order to solve the above problems, a cabinet forming a storage space; a main door opening and closing the storage space and having an opening communicating with the storage space; a sub-door rotatably mounted on the main door to open and close the opening; a panel assembly provided in the sub-door and having a front panel and a rear panel through which the inside of the opening can be seen from the outside; and a dew condensation removing unit that blows air through the opening of the main door to the rear panel. Accordingly, it is possible to achieve the effect of quickly removing the condensation formed on the rear panel.

In exemplary embodiments, the cabinet includes an inner case forming a storage space and an outer case forming an exterior, and the dew condensation removing unit includes: a sidewall outlet provided in front of a sidewall of the inner case; and a sidewall duct provided on a sidewall of the inner case and having one end connected to the sidewall outlet. Accordingly, the dew condensation can be more easily evaporated using dry air.

In example embodiments, the sidewall outlet may be disposed at a height higher than a lower end of the rear panel and lower than an upper end of the rear panel.

In exemplary embodiments, a main fan provided outside the storage space to blow cooling air into the storage space is further included, wherein the sidewall duct has the other end in communication with the outside of the storage space to prevent the main fan from moving. It may be provided to guide the cooling air flowing by rotation to the side wall outlet. Accordingly, the dew condensation can be more easily evaporated using dry air.

In exemplary embodiments, the dew condensation removing unit may further include an opening/closing unit provided in the sidewall outlet to selectively open and close the sidewall outlet. Accordingly, there is an effect that the cold air to be discharged to the storage space is not unnecessarily leaked when dew condensation is not required.

In example embodiments, the opening/closing unit may include a plurality of rotatable blades, and may open and close the sidewall outlet by rotation of the plurality of blades. Accordingly, there is an effect that the cold air to be discharged to the storage space is not unnecessarily leaked when dew condensation is not required.

In exemplary embodiments, the dew condensation removing unit includes a sub-pan provided in the storage space; and a sub-fan guider provided in the storage space and extending toward the rear panel to guide air flow by the sub-fan to the rear panel. Accordingly, it is possible to remove the dew condensation with only simple configurations without a complicated duct structure.

In example embodiments, the sub-pan may be provided at the rear of the storage space, and may be inclined to the left or right. Accordingly, it is possible to smoothly enter and exit the food placed inside the shelf.

In example embodiments, the sub-pan may be provided between the sub-pan guider and a sidewall of the cabinet. Accordingly, the air flowing by the sub-fan may be intensively sprayed onto the rear panel.

In exemplary embodiments, the cabinet includes an inner case forming a storage space and an outer case forming an exterior, and the dew condensation removing unit is provided on an upper surface of the inner case to guide air to the rear panel. duct; may include. Accordingly, the dew condensation can be more easily evaporated using dry air.

In exemplary embodiments, a main fan provided outside the storage space to blow cooling air into the storage space; may further include. Accordingly, the dew condensation can be more easily evaporated using dry air.

In exemplary embodiments, the dew condensation removing unit may further include a guide vane provided to be inclined downward at one end of the ceiling duct. Accordingly, air may be intensively sprayed on the rear panel.

In exemplary embodiments, a storage case provided on the rear surface of the main door and having a front opening to a size corresponding to the opening, further comprising, wherein the dew condensation removing unit, a door fan provided on the storage case; may include Accordingly, it is possible to blow air to the rear panel without structural deformation of the inner case.

In exemplary embodiments, the door fan may be provided to be inclined at a predetermined angle to the rear. Accordingly, the air inside the storage space can be easily sucked into the door fan.

In example embodiments, a door fan mounting unit for fixing the door fan to the upper portion of the storage case may be further included. Accordingly, the door fan may be stably seated in the storage case.

In exemplary embodiments, a door fan shroud provided in the door fan mounting part and positioned below the door fan to guide air flow by the door fan to the rear panel; may further include. Accordingly, air may be intensively sprayed on the rear panel.

In order to solve the above problems, the present invention is provided in a cabinet forming a storage space, a main door having an opening communicating with the storage space, a sub door opening and closing the opening, and the sub door, and the inside of the opening is provided. A method for controlling a refrigerator, comprising: a panel assembly having a front panel and a rear panel that can be seen through from the outside; and a dew condensation removing unit for blowing air to the rear panel through an opening of the main door; a door opening/closing detection step of detecting the opening and closing of the sub-door; and a dew condensation removing step of operating the dew condensation removing unit. Accordingly, it is possible to more efficiently control the dew condensation formed on the rear panel by opening and closing the door.

In exemplary embodiments, the step of removing the dew condensation may be performed when at least one of the main door and the sub-door is opened and then closed is detected in the door opening/closing detection step.

In exemplary embodiments, the dew condensation removing step may be performed for a preset time. Accordingly, dew condensation can be easily removed without a separate sensor and complicated control logic.

In exemplary embodiments, the method further includes: checking at least one data of external temperature and internal temperature, external humidity, and door opening time, and determining the operation time of the dew condensation removing unit according to the confirmed data; And, the dew condensation removing step may be performed for a time determined in the dew condensation removing unit operation time determining step. Accordingly, it is possible to efficiently operate the dew condensation removing unit to reduce power consumption.

In exemplary embodiments, the determining of the operation time of the dew condensation removing unit includes a data checking step of checking at least one data of external temperature, internal temperature, external humidity, and door opening time; and the checking of the pre-stored reference values. and an operation time determining step of confirming a reference value matching the data, and determining an operation time of the dew condensation removing unit according to a reference operation time according to the matched reference value.

In exemplary embodiments, in the operation time determining step, when the external humidity is less than a predetermined value, the operation time of the dew condensation removing unit may be set to '0'.

In exemplary embodiments, a condensation residual value sensing step of detecting a residual value of the condensation remaining inside the rear glass; and determining whether to operate the dew condensation removing unit to determine whether the dew removal unit operates by judging whether the residual value detected in the dew residual value detecting step is equal to or greater than a reference value. Accordingly, according to this, it is possible to efficiently operate the dew condensation removing unit to reduce power consumption.

In exemplary embodiments, the step of removing the dew condensation may include: detecting a residual value of dew condensation for detecting a residual value of dew remaining inside the rear glass; and determining whether to stop the operation of the dew removal unit for determining whether to stop the operation of the dew condensation removal unit by determining whether the residual value detected in the step of detecting the residual dew condensation value is equal to or greater than a reference value.

In exemplary embodiments, the method may further include a compressor for compressing the refrigerant for air cooling, and the dew condensation removing step may be performed shorter than when the compressor is stopped when the compressor is being driven. . Accordingly, it is possible to prevent overload of the power supply and reduce power consumption.

In exemplary embodiments, the dew condensation removing unit includes a discharge port provided on the inner surface of the cabinet; a duct provided in the cabinet and having one end connected to the outlet; and an opening/closing unit provided in the discharge port to selectively open and close the discharge port, wherein the dew condensation removing step may include operating the opening/closing unit to open the discharge port after the door opening/closing detection step. Accordingly, there is an effect that the cold air to be discharged to the storage space is not unnecessarily leaked when dew condensation is not required.

In exemplary embodiments, the method may further include, after the dew condensation removing step, closing the discharge port by operating the opening/closing unit. Accordingly, there is an effect that the cold air to be discharged to the storage space is not unnecessarily leaked when dew condensation is not required.

In exemplary embodiments, a flow path may be formed on the side of the refrigerator, and the flow path direction may be configured so that air coming out of the flow path is irradiated to the front transparent glass.

In exemplary embodiments, the air discharged from the sidewall flow path outlet may be directly irradiated to the transparent glass or may be irradiated to the glass through a hole in a cold saver (Case Homebar) surrounding the inside of the refrigerator DID.

In exemplary embodiments, cold air (air) is supplied through one or a plurality of flow paths, and the flow path may be configured through a side or upper space.

In exemplary embodiments, the air discharged through the air passage is configured using a separate fixed pressure fan to maintain a high pressure, and the discharge fan of the refrigerator evaporator may be used in common.

In exemplary embodiments, when the refrigerator microcomputer detects the opening and closing of the refrigerator door and closing the door, the cold air supply fan is operated for a predetermined period of time to remove the Dew of the window door.

In exemplary embodiments, the humidity sensor may check the external temperature and humidity in real time to optimize the operation time of the cooling air supply fan.

The present invention in order to solve the above problems, a cabinet forming a storage space; a door that opens and closes the storage space and is rotatably mounted on the cabinet to open and close the storage space; a panel assembly provided in the door and having a panel through which the inside of the storage space can be seen from the outside; and a dew condensation removing unit for blowing air to the panel.
A refrigerator according to another aspect includes: a cabinet forming a storage space; a main door opening and closing the storage space and having an opening communicating with the storage space; a sub-door rotatably mounted on the main door to open and close the opening; a panel assembly provided on the sub-door and having a front panel and a rear panel through which the inside of the opening can be seen from the outside; and a dew condensation removing unit extending from the rear side of the storage space toward the rear panel to guide air toward the rear panel, wherein the air discharged from the dew condensation removing unit passes through the opening of the main door to the rear panel can be reached
It may further include a storage case coupled to the rear side of the main door, the front opening facing the opening of the main door. The storage case includes a storage case opening through which the air discharged from the dew condensation removing unit is introduced.
The cabinet includes an inner case forming the storage space and an outer case forming an exterior. The dew condensation removing unit may include: a sidewall outlet provided in front of a sidewall of the inner case; and a sidewall duct provided on a sidewall of the inner case and having one end connected to the sidewall outlet.
The sidewall outlet may be disposed at a height higher than a lower end of the rear panel and lower than an upper end of the rear panel.
The dew condensation removing unit may further include an opening/closing unit provided in the sidewall outlet to selectively open and close the sidewall outlet.
The dew condensation removing unit may include: a sub-pan provided in the storage space; and a sub-fan guider provided in the storage space and extending toward the rear panel to guide air flow by the sub-fan to the rear panel.
The sub-pan guider may be located at an upper portion inside the storage space.
The cabinet may include an inner case forming the storage space and an outer case forming an exterior, and the dew condensation removing unit may include a ceiling duct disposed between the inner case and the outer case.
It may further include a guide vane inclined downward at one end of the ceiling duct.
A refrigerator according to another aspect includes: a cabinet forming a storage space; a main door opening and closing the storage space and having an opening communicating with the storage space; a storage case provided at the rear side of the main door, the storage case being opened to face the opening; a sub-door rotatably mounted on the main door to open and close the opening; a panel assembly provided on the sub-door and having a front panel and a rear panel through which the inside of the opening can be seen from the outside; and a door fan provided on an upper portion of the storage case.
a door fan mounting unit for fixing the door fan to the upper portion of the storage case, and a door fan shroud provided in the door fan mounting unit and positioned below the door fan to guide air flow by the door fan to the rear panel; may further include.

The present invention can achieve the effect of preventing the problem that the shape of the food placed in the door basket or inside the storage space is blurred or refracted due to dew condensation generated in the panel assembly.

The present invention can achieve the effect of rapidly removing dew condensation by blowing air directly toward the surface of the panel assembly.

The present invention can achieve the effect of accurately determining whether dew condensation is formed on the surface of the panel assembly.

1 is a perspective view of a refrigerator according to an embodiment of the present invention.
2 is a perspective view showing an open sub-door of the refrigerator.
3 is a perspective view showing an open main door of the refrigerator.
4 is an exploded perspective view showing the coupling structure of the main door and the sub-door.
5 is a state diagram illustrating before and after on/off of the door lighting unit.
6 is a side cross-sectional view showing the detailed configuration of the upper lighting unit.
7 is a perspective view of a dew condensation removing unit according to a first embodiment of the present invention.
8 is a cutaway view of the dew condensation removing unit according to the first embodiment of the present invention.
9 is a top view of a dew condensation removing unit according to a second embodiment of the present invention.
10 is a side view of a dew condensation removing unit according to a third embodiment of the present invention.
11 is a perspective view of a dew condensation removing unit according to a fourth embodiment of the present invention.
12 shows a coupling structure of a dew condensation removing unit according to a fourth embodiment of the present invention.
13 is a perspective view of a door fan shroud according to a fourth embodiment of the present invention.
14 is a block diagram illustrating a flow of a control signal of the refrigerator.
15 is a flowchart sequentially illustrating a control method of the dew condensation removing unit, and relates to an embodiment in which the dew dew removing unit operates for a preset time.
16 is a flowchart sequentially illustrating a control method of the dew condensation removing unit, and relates to an embodiment in which the operation time of the dew condensation removing unit is determined according to any one data of external temperature, internal temperature, external humidity, and door opening.
17 is a flowchart sequentially illustrating a control method of the dew removal unit, and relates to an embodiment in which an operation time of the dew dew unit is determined according to a residual value of dew condensation.
18 is a flowchart in which an operation time of the dew condensation removing unit is determined according to a residual value of dew, and the order of detecting a residual value is partially different from that of FIG. 17. Referring to FIG.
19 is an embodiment for determining whether or not condensation is generated on the rear panel by more than a reference value, and illustrates that the rear panel is provided with first and second rear terminals.
FIG. 20 shows an embodiment in which the first and second terminals are provided at positions different from those of FIG. 19 .
21 is an embodiment for determining whether or not condensation is generated on the edge of the front panel by more than a reference value, and shows first to fourth terminals provided on the front panel.
22 is a view illustrating that a hydrophilic layer is provided on the surface of the panel, and the interval between dew condensation is narrowed.
23 is a flowchart illustrating a control flow for driving the dew condensation removing unit by comparing a current value measured through the dew detection unit with a reference current value.
24 is a flowchart illustrating a control flow for driving the condensation removing unit by comparing a current value measured through the condensation detecting unit with a reference current value, and relates to an embodiment in which the current value is periodically measured for a preset time.

1 is a perspective view of a refrigerator according to an embodiment of the present invention. And, Figure 2 is a perspective view of the sub-door 50 of the refrigerator is opened. And, FIG. 3 is a perspective view in which the main door 40 of the refrigerator is opened.

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 opening and closing the storage space.

The cabinet 10 may be divided into an outer case 103 forming an overall appearance and an inner case 105 forming a storage space in which food is stored.

A predetermined space is formed between the outer case 103 and the inner case 105 to provide a refrigerant cycle C for cooling air, and the space provided with the refrigerant cycle C is generally It can be called the machine room.

The refrigerant cycle (C) consists of a compressor (CP), a condenser (CD), an evaporator (E), and a valve (V) to cool the air in the storage space.

In addition, a cold air supply duct 123 (refer to FIG. 7 ) for guiding air cooled by the refrigerant cycle C into the storage space may be provided on the rear wall of the inner case 105 .

When the compressor (CP) is driven, the refrigerant circulates through the refrigerant cycle (C), and the air discharged from the storage space is cooled while passing the evaporator (E) and is cooled by the main fan (F) in the cold air supply duct is discharged back into the storage space through the

On the other hand, the interior of the cabinet 10 may be partitioned up and down by a barrier, a refrigerating compartment 12 may be formed at an upper portion of the cabinet 10 , and a freezing compartment 13 may be formed at a lower portion of the cabinet 10 . can be formed.

The door may include a refrigerator compartment door 20 and a freezer compartment door 30 . The refrigerating compartment door 20 may be configured to open and close the open front of the refrigerating compartment 12 by rotating, and the freezing compartment door 30 may be configured to open and close the opened front of the freezing compartment 13 by rotating.

Further, the refrigerating compartment door 20 may be provided with a pair of left and right so that the refrigerating compartment 12 is shielded by the pair of doors. In addition, the freezing compartment door 30 may be drawn out in a drawer type, and may be configured to open and close the freezing compartment 13 by pulling out.

In addition, various accommodating members such as shelves, drawers or baskets may be provided inside the refrigerating compartment 12 and the freezing compartment 13 . If necessary, the storage member may be pulled out and taken out with the refrigerating compartment door 20 and the freezing compartment door 30 open, and food can be accommodated and stored by taking out the storage member.

On the other hand, in the embodiment of the present invention, a refrigerator to which a pair of doors is rotated to open and close a single space in a bottom freeze type refrigerator having a freezer compartment below is described as an example of a refrigerator to which a French type door is applied, but the present invention can be applied to any type of refrigerator provided with a door regardless of the shape of the refrigerator.

The refrigerating compartment door 20 and the freezing compartment door 30 form an overall appearance when viewed from the front, and if necessary, the refrigerating compartment door 20 may be provided with a dispenser 22 for dispensing water or ice.

Meanwhile, the refrigerating compartment door 20 on the right side (as seen in FIG. 1 ) among the pair of refrigerating compartment doors 20 may be configured to open and close double. In detail, the refrigerating compartment door 20 located on the right side includes a main door 40 for opening and closing the refrigerating compartment 12 , and an opening formed in the main door 40 rotatably disposed on the main door 40 . 403) may be configured as a sub-door 50 for opening and closing.

The main door 40 is rotatably mounted to the cabinet 10 by an upper hinge 401 and a lower hinge 402 to open and close at least a portion of the refrigerating compartment 12 .

A door basket 43 is mounted on the rear surface of the main door 40 including the inside of the opening 403 . Accordingly, the user can access the door basket 43 without opening the main door 40 through the opening 403 . In this case, the size of the opening 403 may occupy most of the front surface of the main door 40 except for a portion of the circumference of the main door 40 .

The door basket 43 may include only the first door basket 431, but further includes a second door basket 433 located below the first door basket 431 as necessary to secure a storage space. Alternatively, the third door basket 435 located below the second door basket 433 may be additionally provided.

The sub door 50 is rotatably mounted on the front surface of the main door 40 to open and close the opening 403 . Accordingly, access to the opening 403 from the outside is possible through the opening of the sub-door 50 .

The size of the sub door 50 may be the same as the size of the main door 40 to shield the entire front surface of the main door 40 .

The sub-door 50 is provided with a panel assembly 54 formed of a transparent material such as glass in the center thereof. Accordingly, it is possible to see through the inside of the opening 403 even when the sub-door 50 is closed. The sub door 50 may be referred to as a see-through door.

The sub door 50 is rotatably mounted on the front surface of the main door 40 , and the sub door 50 independently rotates when the main door 40 is closed to open and close the opening 403 . can be configured to do so.

Meanwhile, a handle 23 may be provided on the front side of the refrigerator compartment door 20 . The handle 23 may be formed at an end of the pair of refrigerating compartment doors 20 adjacent to each other. Meanwhile, the handle 23 of the refrigerating compartment door 20 located on the right side may be provided on the front side of the sub door 50 .

A locking unit 232 operated by an operation button 231 may be provided in the sub-door 50, and the locking unit 232 protrudes to the rear of the sub-door 50, and It can be selectively coupled and disengaged with the constraining member 404 .

Meanwhile, a storage case 41 may be formed on the rear surface of the main door 40 . The storage case 41 defines a storage space on the rear surface of the main door 40 , and the door basket 43 may be disposed therein.

As shown in the drawing, the front side of the storage case 41 is opened, and the opened front side of the storage case 41 may be formed to correspond to the size of the opening 403 . Accordingly, when the sub-door 50 is opened, the opening 403 is exposed, and the door basket 43 inside the storage case 41 can be accessed through the opening 403 .

In addition, a case door 42 that is opened and closed by rotation may be provided on the rear surface of the storage case 41 . Accordingly, in a state in which the main door 40 is opened, the case door 42 may be opened to access the door basket 43 .

A case opening 432 and a door opening 421 may be formed in the storage case 41 and the case door 42 to allow cool air in the refrigerator to flow into the storage case 41 . Accordingly, the temperature inside the storage case 41 may be maintained to be the same as the temperature inside the refrigerating compartment 12 .

4 is an exploded perspective view showing the coupling structure of the main door and the sub-door.

As shown in the drawing, the upper hinge 401 is fixedly mounted to the cabinet 10 so that the main door 40 is rotatably mounted to the cabinet 10, and the sub-upper hinge 51 allows the sub door 50 to be rotatably mounted to the main door 40 .

In this case, the hinge shaft 511 of the sub-upper hinge 51 may be formed in a tube shape having an open cross-section at one side. Such a cross-sectional structure provides a more expanded space inside the hinge shaft 511 . Accordingly, the electric wires connected to the electrical components (door lighting unit) provided in the sub-door 50 are guided to the outside of the sub-door 50 through the hinge shaft 511 of the sub-upper hinge 51 to the cabinet ( 10) Be connected to the main control unit (not shown).

The upper hinge 401 and the sub-upper hinge 51 are shielded by the main hinge cover 45 and the sub hinge cover 53 . The main hinge cover 45 and the sub hinge cover 53 have a structure connected to each other, and the electric wire guided to the outside through the sub upper hinge 51 passes the sub hinge cover 53 and the main hinge cover It may be guided toward the main control unit through the inside of (45).

In addition, a separate PCB for controlling the electric components on the side of the sub-door 50 may be accommodated inside the main hinge cover 45 .

Meanwhile, a lower hinge 402 for supporting the lower end of the main door 40 is mounted on one side of the front side of the cabinet 10 . In addition, a sub-lower hinge 52 for supporting the sub-door 50 is mounted at a lower end of the main door 40 .

5 is a state diagram illustrating before and after on/off of the door lighting unit.

The main door 40 may be provided with a door lighting unit L that illuminates the door basket 43. When a user wants to check the door basket 43 from the outside through the panel assembly 54, the The door lighting unit L may be turned on. The detailed configuration of the door lighting unit L will be described later.

As a method of detecting a user's intention to check the door basket 43 , for example, a method of detecting a user knocking on the panel assembly 54 may be applied. However, the present invention is not limited thereto, and the user's confirmation intention may be detected in various ways other than the knock detection method.

Normally, the panel assembly 54 is maintained as shown in the left state of FIG. 5, but when the refrigerator detects the user's intention to check the door basket 43, the door lighting unit L is turned on and the right state of FIG. As shown, the inside of the panel assembly 54 can be checked.

When the inside of the opening 403 becomes bright, the user checks the inside of the door basket 43 from the outside, and opens the sub-door 50 to accommodate food as necessary.

The lit door lighting unit L may be controlled so that the lit state is maintained for a set period of time, for example, 10 seconds, so that the user can sufficiently check the state of the cabinet, and after the door lighting unit L is turned on When a set time elapses or a specific signal is input, the door lighting unit L may be turned off.

Hereinafter, the door lighting unit L will be described in more detail.

Referring to FIG. 6 , the door lighting unit L may include an upper lighting unit 49 , and the upper lighting unit 49 is located on the upper side between the main door 40 and the sub-door 50 . It can be provided in space.

In more detail, the upper lighting unit 49 is disposed above the first door basket 431 to light the door basket 43 mounted on the main door 40 .

The upper lighting unit 49 shields a lamp PCB 492 in which a plurality of LEDs are disposed, a lamp case 491 mounted on the lamp PCB 492, and an open lower surface of the lamp case 491, A lamp cover 493 exposed through the opening may be included.

The light irradiated from the lamp PCB 492 may be reflected through the round surface 4913 having a predetermined curvature, and may be guided to the door basket 43 through the lamp cover 493 .

In addition, a lamp PCB mounting part 4914 on which the lamp PCB 492 is mounted is formed on one surface facing the round surface 4913 , and one side of the lamp PCB mounting part 4914 is connected to the lamp PCB 492 . A wire entrance (not shown) through which an electric wire is entered may be formed.

Meanwhile, with continuing reference to FIG. 6 , referring to the panel assembly 54 in more detail, the panel assembly 54 has a front panel 541 whose front surface is exposed to the outside and a rear side of the front panel 541 . It may include a rear panel 542 disposed in the main door 40 facing the opening 403 . Also, an intermediate panel 544 may be additionally disposed between the front panel 541 and the rear panel 542 for thermal insulation.

The front panel 541 and the middle panel 544 may be fixed to be spaced apart from each other by a predetermined distance in the front and rear through the interbar 543 for thermal insulation, and the middle panel 544 and the rear panel 422 are similarly It can be fixed by being spaced apart a predetermined distance in the front and rear through the interstitial rod (543).

When the middle panel 544 is not provided, the front panel 541 and the rear panel 422 may be fixed to each other through a rod 543 .

The front panel 541 , the middle panel 544 , and the rear panel 422 may be formed of a glass material that can be seen through from the outside. It may be provided as a half mirror that can be seen through.

Accordingly, the user can see the inside of the refrigerator from the outside while the sub-door 50 is closed.

At this time, when the door lighting unit 49 is turned on, the door basket 43 and its periphery become bright, and light passes through the rear panel 542, the middle panel 544, and the front panel 541 in sequence. As a result, the user can more clearly check the food stored in the door basket 43 or the storage space.

However, when the main door 40 or the sub-door 50 is opened and then closed again, dew condensation is generated on the rear surface of the rear panel 542 that is in contact with the cold air in the refrigerator, so that the interior of the refrigerator or the door basket 43 is closed. It may be difficult to clearly identify the stored food from the outside.

Accordingly, the present invention may include a dew condensation removing unit 70 that blows air toward the rear panel 542 through the opening 403 of the main door 40 .

Referring to FIGS. 7 and 8 , the first embodiment of the dew condensation removing unit 70 will be described. The dew condensation removing unit 70 includes a sidewall outlet 72 provided on a sidewall of the inner case 105 and the inner It may be formed of a sidewall duct 71 provided on the sidewall of the case 105 .

More specifically, the sidewall outlet 72 may be provided in front of the sidewall of the inner case 105 , and may be disposed at a height higher than the lower end of the rear panel 542 and lower than the upper end.

This allows the air to be delivered through the side wall duct 71 to be blown directly toward the rear panel 542, so that the dew condensation can be evaporated within a short time.

In addition, the side wall duct 71 may extend to the rear wall of the inner case 105 so that the other end communicates with the space between the inner case 105 and the outer case 103 .

In other words, it may be provided to communicate with the machine room in which the refrigerant cycle (C) is provided.

The air that has passed through the refrigerant cycle C is guided to the side wall duct 71 by the main fan F, and the guided cooling air is discharged to the rear panel 542 through the side wall outlet 72 . will become

Accordingly, there is an effect that the dew condensation formed on the rear panel 542 can be removed more quickly.

That is, the air that has passed through the refrigerant cycle (C) is colder and drier than the air remaining in the storage space, so it easily evaporates dew condensation and at the same time cools the air around the rear panel 542 to prevent additional dew condensation. do.

On the other hand, when the cooling air generated by the refrigerant cycle (C) and the main fan (F) is continuously supplied to the side wall duct 71, the cold air supply duct 123 for cooling the food in the storage space. The flow rate of cold air flowing through the

Therefore, it is necessary to properly adjust the cooling air supplied to the sidewall duct 71, and for this, the sidewall outlet 72 may be provided with an opening/closing part 721 for selectively opening and closing the sidewall outlet 72.

More specifically, the opening and closing part 721 may be provided in any shape as long as it can open and close the sidewall outlet 72 , but in this embodiment, the opening and closing part 721 may be formed of a plurality of rotatable blades.

The opening/closing part 721 made of the plurality of blades may be rotatably connected to at least one of an upper end or a lower end of the side wall outlet 72 .

The opening/closing part 721 is usually positioned so that one surface faces the flow path formed by the sidewall duct 71 to keep the sidewall outlet 72 closed, and to remove the condensation formed on the rear panel 542. The side edge can be rotated towards the back panel 542 if needed to be removed.

In summary, the opening and closing part 721 has an effect of inducing cold air to the rear panel 542 when it is necessary to remove dew condensation, while preventing the problem of cold air from leaking through the side wall outlet 72 normally.

In addition, when the storage case 41 is installed in the main door 40 , a storage case having a shape corresponding to the sidewall discharge port 72 is located at a portion of the storage case 41 facing the sidewall discharge port 72 . An opening 411 may be formed.

Accordingly, the discharged cooling air may be discharged to the rear panel 542 without being disturbed by the storage case 41 .

In addition, depending on the height at which the side wall duct 71 and the door basket 43 are provided, if necessary, the side wall of the door basket 43 facing the side wall outlet 72 may be concavely cut for smooth ventilation. .

Hereinafter, a second embodiment of the dew condensation removing unit 70 will be described with reference to FIG. 9 .

According to the second embodiment, the dew condensation removing unit 70 includes a sub-fan 73 provided in the storage space and a sub-fan guider guiding the air flow by the sub-fan 73 to the rear panel 542 ( 74) can be achieved.

More specifically, the sub-pan 73 may be a box fan, and the sub-pan guider 74 may extend from the rear of the storage space toward the rear panel 542 .

The air inside the storage space flows forward by the sub-fan 73 , and the sub-fan guider 74 guides the generated air flow to be concentrated on the rear panel 542 .

Embodiment 2 shares the same technical features as Embodiment 1 above in that it blows air toward the rear panel 542, but differs from Embodiment 1 in that it uses the air inside the storage space as it is. It can be seen that this exists.

The second embodiment has an advantage in that it does not excessively deform the structure of the inner case 105 and removes dew condensation with only a simple box pan and guider.

In addition, the sub-pan 73 is provided at the rear of the storage space and may be inclined to the left or right. can

Since the sub-pan 73 and the sub-pan guider 74 are inclined to the left or right, it is possible to prevent a problem of interfering with the food stored in the storage space or in and out.

In addition, the sub-pan 73 may be provided between the sub-pan guider 74 and the side wall of the inner case 105 , and a protrusion protruding toward the rear panel on the front side of the inner wall of the inner case 105 . may be provided.

Hereinafter, a third embodiment of the dew condensation removing unit 70 will be described with reference to FIG. 10 .

The dew condensation removing unit 70 may be formed of a ceiling duct 75 provided on the upper surface of the inner case 105 .

The ceiling duct 75 may extend to the rear wall of the inner case 105 so that the other end communicates with the space between the inner case 105 and the outer case 103, and is formed to extend toward the front of the storage space. can be

That is, as in the first embodiment, it is provided to communicate with the machine room provided with the refrigerant cycle (C), and the air that has passed through the refrigerant cycle (C) is transferred to the ceiling duct (75) by the main fan (F). is guided, and the guided cooling air is discharged toward the rear panel 542 .

* In this embodiment, since the cooling air descends from the top of the rear panel 542 to the bottom of the rear panel 542 and reaches the bottom, the cooling air reaches the entire rear surface of the rear panel 542 efficiently. There are advantages to doing.

In addition, the ceiling duct 75 may be provided with guide vanes 751 inclined downward.

The guide vane 751 may be provided at one end of the front side of the ceiling duct 75 , and the front end of the guide vane 751 may be formed to face an upper side of the rear panel 542 .

The guide vane 751 naturally guides cooling air to the upper end of the rear panel 542 to reduce the flow resistance of the cooling air, thereby ensuring the cooling air reaches the lower end of the rear panel. can be

In addition, as in the first embodiment, the ceiling duct 75 may be provided with an opening/closing part for selectively opening and closing the ceiling duct 75 .

Hereinafter, a fourth embodiment of the dew condensation removing unit 70 will be described with reference to FIGS. 11 to 13 .

The dew condensation removing unit 70 may further include a door fan 76 provided on the upper portion of the storage case 41 , and in more detail, the door fan 76 is disposed inside the storage case 41 . It may be located above the located first door basket 431 .

Since the front of the storage case 41 is opened toward the opening 403 of the main door 40 , the air inside the storage space sucked in by the door fan 76 is directed to the rear panel 542 . can be guided directly.

In addition, the door fan 76 may be provided to be inclined at a predetermined angle to the rear. This secures a space between the upper surface of the inner case 105 and the door fan 76 so that air can be easily sucked in, and a larger amount of air is guided to the rear panel 542 .

The door fan 76 may be fixed to the storage case 41 by itself, but needs to be stably mounted to the storage case 41 even when the main door 40 is opened and closed.

Accordingly, the dew condensation removing unit 70 may include a door fan mounting unit 77 on which the door fan 76 is mounted on the upper surface, and the door fan mounting unit 77 on the upper side of the storage case 41. A door fan mounting rib 412 on which is mounted may be provided.

The door fan mounting part 77 may be formed in a shape corresponding to the upper rim of the storage case 41 with an open central portion, and the door fan mounting rib 412 may be provided on the inner surface of the storage case 41 by a predetermined shape. It is provided to protrude long, and the door fan mounting part 77 may be inclined so as to be inclined rearward.

Meanwhile, since the main door 40 and the storage case 41 are frequently accessed by users, it is necessary to prevent the user's contact with the door fan 76 for safety.

Accordingly, the door fan cover 79 covering the door fan 76 may be mounted on the upper side of the door fan 76 .

The door fan cover 79 includes a cover grill 793 that covers the upper portion of the door fan 76 and has a plurality of suction ports to allow air to be sucked in, and a cover body 791 that fixes the cover grill 793. can

Here, the cover body 791 is firmly coupled to the upper surface of the door fan mounting part 77 to prevent the door fan 76 from being detached.

As described above, the door fan 76 may be provided to be inclined to the rear, but if it is tilted too much, it occupies a large amount of space above the door basket 43 provided at the lower side, thereby reducing space utilization. have.

Accordingly, according to the present embodiment, the dew condensation removing unit 70 may further include a door fan shroud 78 fixed to a lower side of the door fan mounting unit 77 .

A portion of the lower surface of the door fan shroud 78 may be provided to face the lower portion of the door fan 76 , and a front discharge port 781 opened toward the rear panel 542 may be formed at the front.

Accordingly, the air discharged from the door fan 76 is intensively sprayed onto the rear panel 542 through the front discharge port 781 .

The door fan shroud 78 not only increases the air discharge speed so that the condensation can be removed more quickly, but also cools the cooling air from the upper end of the rear panel 542 to the surface of the rear panel 542 and descends. Make sure you reach the bottom in a stable way.

In addition, a rear discharge port 783 that is opened toward the inner surface of the storage case 41 may be further formed at the rear of the door fan shroud 78 , which is a condensation generated on the inner surface of the storage case 41 . can also be removed at the same time.

Referring to FIG. 14 , the refrigerator 1 of the present invention includes a main controller 2 that controls the operation of the refrigerator, and the main controller 2 controls the refrigerant cycle C and the main fan according to its own algorithm. F) may be provided to operate.

As shown in the drawing, the main control unit 2 may be connected to a door opening/closing detection unit (not shown) and the dew condensation removing unit 70 to turn the dew condensation removing unit 70 on and off as necessary. In addition, the main controller 2 may be connected to the dew detection unit 80 to determine whether dew condensation has been generated in the panel assembly 54 to control the dew dew removal unit 70 .

It should be noted in advance that all embodiments related to the control method described below can be applied to all of the first to fourth embodiments related to the above-described dew condensation removing unit 70 .

15 is a flowchart sequentially showing a control method of the dew condensation removing unit 70, and relates to an embodiment in which the dew condensation removing unit operates for a preset time.

First, the step (S300) of detecting the opening and closing of the main door 40 or the sub-door 50 through the door opening/closing detection unit is performed.

Thereafter, when it is determined that at least one of the main door 40 and the sub-door 50 is opened and then closed (S303) in the door opening/closing detection step (S300), the dew condensation removing unit 70 is turned on and the rear surface Condensation removal steps ( S330 and S340 ) of removing the condensation formed on the panel 542 may be performed.

When a preset time T1 has elapsed since the steps of removing the dew (S330 and 340) have elapsed, the dew remover 70 may be turned off.

At this time, the preset time T1 is a state in which the external temperature of the refrigerator 1 is maintained at the highest level (34° C. or higher) in a general environment, the relative humidity is at a certain level (95% or more), and the storage space It may be set assuming that the internal temperature is maintained at the lowest temperature of the refrigerating compartment (about 0° C.).

That is, since the external environment is hot and humid and the lower the internal temperature of the storage space, the more condensation is formed. do.

According to the embodiment of the present control method, there is an advantage that dew condensation can be completely removed without the need for a separate complicated control logic.

In addition, a control method applicable to a specific embodiment of the dew condensation removing unit 70 will be described with reference to FIG. 15 .

As an embodiment applicable to Embodiments 1 and 3 of the dew condensation removing unit 70, at least one of the main door 40 and the sub-door 50 is opened and then closed in the door opening/closing determination step (S303). If it is determined (S303), the main control unit 2 operates the opening/closing unit 721 to open the sidewall outlet 72 or the ceiling duct 75 (S310).

Thereafter, when it is determined that the discharge port is open (S313), a step (S315) of turning off the opening/closing unit 721 is performed.

Next, the main control unit 2 determines whether the compressor CP is on (S320), and when the compressor is on, operates the dew condensation removing unit 70 during T1 (S330).

In addition, when the compressor is off, the dew condensation removing unit 70 is operated during T2 ( S340 ). In this case, the T1 may be set shorter than the T2 .

This is because, as described above, when the refrigerant cycle (C) is in operation, dry air may be discharged toward the rear panel (542) compared to the case in which the refrigerant cycle (C) is not operated.

After that, when it is determined that the preset time (T1 or T2) has elapsed (S333, S343), the dew condensation removing unit 70 is turned off and the opening and closing unit is turned on (S350) to the sidewall outlet 72 or the ceiling duct ( 75) is closed.

16 is related to an embodiment in which the operation time of the dew condensation removing unit 70 is determined according to any one data of external temperature, internal temperature, external humidity, and door opening.

According to the present embodiment, when it is determined that at least one of the main door 40 or the sub-door 50 is opened and then closed (S403) in the door opening/closing detection step (S400), the operation condition of the dew condensation removing unit 70 is determined. A step (S423) of determining the operation time (T1) of the dew condensation removing unit according to the confirmed data by checking the data is performed.

Here, the data regarding the operation condition of the dew condensation removing unit 70 may be at least one of external temperature, internal temperature, external humidity, and door opening time.

That is, after checking the internal and external conditions of the refrigerator 1 , the operation time T1 of the dew condensation removing unit 70 is determined according to the checked conditions.

Unlike the above-described embodiment, since the operation time of the dew condensation removing unit 70 is appropriately controlled according to the surrounding environment, it is possible to reduce overall power consumption.

More specifically, the operation time determination step (S423) of the dew condensation removing unit may be comprised of a data confirmation step (S420) and an operation time determination step (S423).

In the data checking step (S420), at least one data of external temperature, internal temperature, external humidity, and door opening time is checked using various sensors.

Thereafter, in the operation time determining step (S423), a reference value matching the data confirmed in the data checking step (S420) among the reference values stored in advance is checked, and the dew condensation removing unit according to the reference operation time according to the matched reference value Determine the operating time.

That is, according to the present embodiment, the operation time of the dew condensation removal unit 70 according to different conditions is stored in the refrigerator 1 in the form of a virtual table, and the main control unit 2 matches the sensed internal and external conditions. The dew condensation removing unit 70 is operated (S430) during the time T1.

After that, when T1 elapses, a step (S440) in which the dew condensation removing unit 70 is turned off is similarly performed.

In addition, in this embodiment, additional steps (S410, 413, 415, 440, S410, 413, 415, 440, 443 and 445) may proceed, and a detailed description thereof will be omitted since it is the same as that described with reference to FIG. 15 .

17 and 18 relate to an embodiment in which the operating time of the dew condensation removing unit is determined according to a residual value of dew condensation, common features of the embodiments shown in FIGS. 17 and 18 will be described first.

17 and 18, when it is determined that at least one of the main door 40 or the sub-door 50 is opened and then closed (S503, S603) in the door opening/closing detection step (S500, S600) , to determine whether the dew residual value detected through the dew detection unit 80 is greater than or equal to a reference value to determine whether the dew dew remover 70 operates or not to perform the determining step (S520, S610) do.

Thereafter, when it is determined that the residual condensation value is equal to or greater than the reference value, the condensation removing unit 70 is turned on (S530, S630).

In a state in which the dew condensation removing unit 70 is in operation, it may be determined whether the dew condensation remains through the dew condensation detecting unit 80, and when it is determined that the detected dew dew residual value is lower than the reference value, the dew condensation removing unit 70 ) of the dew condensation removing unit to turn off whether to stop operation (S540, S640) may be performed.

In this embodiment, in terms of controlling the operation of the dew condensation removing unit 70 by sensing the residual dew condensation value in real time, it is meaningful to control the operating time of the dew condensation removing unit 70 to an optimal time.

On the other hand, there is a difference only in the order of the steps of determining whether the dew removal unit is operated or not, and the opening and closing unit 721, which is a configuration applicable to Embodiments 1 and 3 of the dew condensation removal unit 70, is opened in FIGS. 17 and 18. .

Additional steps (S510, 513, 515, 550, 553, 555 / S620, 623, 625, 650, 653, 655) may proceed, and detailed descriptions thereof are the same as those described with reference to FIG. 15, and thus will be omitted.

As a method for detecting the residual condensation value, a method of detecting a change in the capacitance value of the glass surface due to condensation occurring on the surface of the rear panel 542 may be used, and the camera installed inside the storage space A method of photographing a portion of the surface of the rear panel 542 and checking whether condensation is generated through image processing may be used.

However, in this embodiment, as a method of detecting a residual value of dew, a method of measuring a current value according to the generation and reduction of dew condensation with a predetermined potential difference between at least two or more terminals provided on the rear panel 542 is provided. Described as an example.

19 shows a rear surface of the panel assembly 54. Referring to this, the condensation detection unit 80 is provided on both sides of the rear surface of the rear panel 542 to form a potential difference at the rear first terminal. 821 and a rear second terminal 823 .

In general, since the rear panel 542 is made of glass, which is an insulator, current cannot be transmitted unless the surface is specially treated.

However, a plurality of dew condensation is generated on the surface of the rear panel 542, and when the distance between the plurality of dew condensation is less than a predetermined distance, the rear second terminal 821 through the plurality of dew condensation A current can flow through the terminal 823 . Of course, it is also included to allow current to flow from the rear second terminal 823 to the rear first terminal 821 by differentiating the anode and the cathode.

Here, the minimum distance between the dews through which electrons can be transferred through a plurality of dews may be defined as the minimum insulation distance (D).

That is, if the mutual distance can be less than the minimum insulation distance (D) even if the respective dews are combined with each other and do not form a single dew, the current flows from the rear first terminal 821 to the rear second terminal 823 be able to flow

Accordingly, when there is no or very little condensation on the rear panel 542 , the current value measured through the condensation detection unit 80 will approach “0”, and accordingly, the main control unit 2 controls the rear panel It can be judged that there is no condensation in (542) or very little.

On the other hand, as shown in FIG. 19 , when a predetermined amount or more of condensation is formed on the rear panel 542 and the distance between the condensation is maintained at a distance D1 that is less than or equal to the minimum insulating distance D, the condensation detecting unit 80 A predetermined current value is measured through , and the main controller 2 determines that dew condensation remains on the rear panel 542 .

In addition, since the electrical conductivity increases as the amount of dew condensation increases, the main control unit 2 can determine the amount of dew condensation according to the magnitude of the measured current value.

Further, with continued reference to FIG. 19 , the rear first terminal 821 and the rear second terminal 823 are disposed at a quarter point from the top in the height direction of the rear panel 542 .

That is, the rear first terminal 821 and the rear second terminal 823 may be provided in a section between the upper end and the middle point of the rear panel.

The corresponding point is an area that a normal adult faces when standing in front of the panel assembly 54, and is an area that needs to be removed by first detecting condensation.

Accordingly, by arranging the rear first terminal 821 and the rear second terminal 823 at the corresponding points to quickly detect and remove dew condensation, the user can use the main door 40 through the panel assembly 54. Make sure you can see clearly through the opening.

Meanwhile, FIG. 20 shows another embodiment regarding the positions of the rear first terminal 821 and the rear second terminal 823 .

That is, unlike the above embodiment, the rear first terminal 821 and the rear second terminal 823 may be provided on both sides of the rear surface of the rear panel 542 and adjacent to the lowermost vertex, respectively.

Since the cold air has a property of sinking downward, the surface temperature of the rear panel 542 decreases toward the lower end.

In other words, since the lowermost portion on the rear surface of the rear panel 542 is in the coldest state, dew condensation is generated first and the largest amount of dew condensation is formed at the same time.

Accordingly, the present embodiment has an advantage in that it is possible to operate the dew condensation removing unit 70 by quickly detecting whether or not dew condensation is generated.

This method of detecting a residual condensation value can be applied not only to the rear panel 542 but also to the front panel 541 , with reference to FIG. 21 showing the front side of the panel assembly 54 coupled to the sub-door 50 . will be explained with

As described above, the rear panel 542 , the intermediate panel 544 , and the front panel 541 are coupled to each other through a rod 543 provided at an edge portion to constitute the panel assembly 54 .

In addition, since a state close to a vacuum is maintained between the respective panels for thermal insulation, there is a characteristic that heat transfer is difficult through the center of the panel.

Accordingly, the cold air of the storage space is transferred to the front panel 541 through the interstitial rod 543 , and a plurality of dew condensation may be generated in a portion adjacent to the upper edge on the front surface of the front panel 541 . have.

Therefore, there is a need to quickly detect and remove whether dew condensation is generated on the surface of the front panel 541 in order to improve hygiene.

To this end, a front first terminal 811 and a front second terminal 812 may be provided on the front surface of the front panel 541 , and the front first terminal 811 and the front second terminal 812 may be provided. can detect whether condensation is generated in the same manner as the above-described rear terminals 821 and 823 .

The first terminal 811 and the front second terminal 812 are provided on both sides of the front surface of the front panel 541, and are located adjacent to the upper edge where a plurality of dew condensation is generated to detect whether dew condensation is generated.

In addition, a plurality of dew condensation due to heat transfer may occur in the vicinity of both edges of the front surface of the front panel 541 .

Accordingly, a front third terminal 813 and a front fourth terminal 814 for detecting whether dew condensation is generated at both corners may be further provided on the front surface of the front panel 541 in addition.

The front third terminal 813 may be provided adjacent to an upper vertex of the front panel 541, and the front fourth terminal 814 faces the front third terminal 813 and faces the front panel ( 541) may be provided adjacent to the lower vertex.

In addition, since dew condensation occurs at both edges of the front panel 541 at the same time, the front third terminal 813 and the front fourth terminal 814 are at least one side of the left or right side of the front panel 541 . It is preferable to be provided only in

22 illustrates that the hydrophilic layer 547 is provided on the surface of the panel, and the distance D2 between dew condensation is narrowed.

As described above, when the distance between dew condensation is formed only below the minimum insulating distance D, the current value can be measured, but as the distance between dew condensation becomes narrower, the electrical conductivity increases.

Accordingly, in the present embodiment, the surface of the rear panel 542 or the front panel 541 is hydrophilicized so that the dew condensation spreads widely, thereby making it possible to narrow the distance D2 between dew condensation as compared to the above-described embodiment. (D2<D1<D)

That is, even if dew condensation is generated at the same rate, since the current value is detected faster when the hydrophilic treatment is performed, there is an excellent effect that the main control unit 2 can more sensitively and quickly detect whether dew condensation is generated.

Hereinafter, referring to FIG. 23 , a current value is measured using the condensation detection unit 80 shown in FIGS. 19 to 22 , and the measured current value is compared with a reference current value to drive the condensation removing unit 70 . Describe the control flow.

When it is determined that at least one of the main door 40 or the sub-door 50 is opened and then closed (S703) in the door opening/closing detection step (S700), using the two terminals of the above-described condensation detection unit (80) A current value measuring step ( S710 ) of measuring a current value may be performed.

When it is determined that the current value measured in the current value measurement step S710 is equal to or greater than the reference current value, the dew condensation removing unit 70 is turned on (S720) to remove the dew condensation.

A current value re-measurement step ( S730 ) of measuring a current value again through the condensation detecting unit 80 may be performed while the dew condensation removing unit 70 is operating.

Thereafter, when it is determined that the current value measured in the current value re-measurement step ( S730 ) is equal to or less than the reference current value, the step of turning off the dew condensation removing unit 70 ( S740 ) may be performed.

On the other hand, when it is determined that the current value measured in the current value re-measurement step S730 is still greater than the reference current value, the dew condensation removing unit 70 maintains an on state.

Accordingly, it is possible to control the operation of the condensation detection unit 80 by detecting the condensation only with a simple device composed of at least two or more terminals.

24 relates to an embodiment in which condensation can be removed by determining whether or not condensation is generated without a door opening/closing detection step.

This embodiment is a control flow in which a step (S800) of determining whether a predetermined time (T1) has elapsed after the last current value measurement before the current value measurement step (S810) is added, without the need for a separate door open/close detection step Condensation detection and removal is possible.

This has an excellent effect of being able to detect the condensation generated when the door is opened and closed because the current value is periodically sensed, as well as the condensation generated by the temperature change caused by the hot food flowing into the storage space. have.

In addition, all of the above-described embodiments may be applied to a one-door type refrigerator provided with only one refrigerating compartment, and may be applied to all refrigerators provided to enable internal viewing.

Even if the effect is not described in this specification, the present invention may have additional effects different from each of the above-described components, and may have a new effect different from the prior art according to the organic coupling relationship between each of the above-described components. of course there is

In addition, the embodiments shown in the drawings may be modified and implemented in other forms, and when implemented including the configuration disclosed in the claims of the present invention or implemented within the scope of equivalents, it should be regarded as belonging to the scope of the present invention. will be.

Cabinet 10 Refrigerator Door 20
main door 40 sub door 50
Sidewall Duct 71 Sidewall Outlet 72
Ceiling Duct 75 Guide Vane 751
Subfan 73 Subfan Guider 74
Door fan 76 Door fan mounting part 77
Door fan cover 79 Door fan shroud 78

Claims (11)

a cabinet including an inner case forming a storage space and an outer case forming an exterior;
a main door opening and closing the storage space and having an opening communicating with the storage space;
a sub-door rotatably mounted on the main door to open and close the opening;
a panel assembly provided on the sub-door and having a front panel and a rear panel through which the inside of the opening can be seen from the outside;
a storage case coupled to the rear of the main door and having an open front facing the opening of the main door; and
and a dew condensation removing unit extending from the rear side of the storage space to guide the air toward the rear panel,
The dew condensation removing unit may include: a sidewall outlet provided in front of a sidewall of the inner case; and a sidewall duct provided on a sidewall of the inner case, one end of which is connected to the sidewall outlet,
The storage case includes a case opening through which air of the storage space is introduced, and a storage case opening aligned with the sidewall outlet,
The air discharged from the side wall outlet may reach the rear panel through the storage case opening and the main door opening. The method of claim 1,
The side wall outlet is higher than a lower end of the rear panel and disposed at a height lower than an upper end of the rear panel. delete 3. The method of claim 2,
The side wall outlet is located closer to a lower end than an upper end of the rear panel. The method of claim 1,
The dew condensation removing unit further includes an opening/closing unit provided at the sidewall outlet to selectively open and close the sidewall outlet. delete delete delete delete delete delete

Images