KR20230150241A - Refirgerator - Google Patents

Abstract

A refrigerator according to an embodiment of the present invention includes a cabinet forming a storage space, a door that opens and closes at least a portion of the storage space, and a lighting unit disposed in the storage space, wherein the door has an adjustable transmittance or reflectance. A front panel made of glass that forms the front of the door, an insulating panel made of glass that is spaced apart from the front panel and forms the back of the door, and a gap that forms a sealed first space between the front panel and the insulating panel. A panel assembly including a first cap deco connected to one side of the front panel to form the first side of the door, a second cap deco connected to the other side of the front panel to form a second side of the door, and connected to the insulation panel. A second space formed by the door liner that forms the rear of the door, the side frame that is connected to the front panel and forms the side of the door, the first cap deco, the second cap deco, the door liner, the side frame, and the panel assembly. It is provided in and includes an insulating material formed by filling a foaming liquid through an injection port formed in at least one of the first cap deco or the second cap deco, and a sensing device installed in the first cap deco and configured to control the lighting unit. In a state where the lighting unit is not turned on because a bezel printed in black color is formed on the back of the front panel facing the side frame, the first cap deco, the second cap deco, and the gap, so that light cannot pass through, The front panel is characterized by being black in color or in a mirror-like state.

Description

refrigerator { refrigerator }

The present invention relates to refrigerators.

In general, a refrigerator is a home appliance that allows food to be stored at low temperatures in an internal storage space shielded by a door. To this end, refrigerators are designed to keep stored food in optimal condition 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 more multi-functional in accordance with changes in eating habits and the trend of higher quality products, and refrigerators equipped with various structures and convenience devices are being released to ensure user convenience and efficient use of internal space. .

The storage space of the refrigerator can be opened and closed by a door. Refrigerators can be classified into various types depending on the arrangement of the storage space and the structure of the door that opens and closes the storage space.

Additionally, a separate storage space accessible from the outside may be provided on the door of the refrigerator. Through this storage space, the storage space can be accessed by opening some of the auxiliary doors or home bar doors without opening the entire refrigerator door.

Therefore, frequently used foods can be stored in a separate storage space provided on the refrigerator door. Additionally, since the entire refrigerator door is not opened to store food, there is an advantage in minimizing the leakage of cold air inside the refrigerator to the outside.

However, even with this structure, there is a fundamental problem that the food inside cannot be checked unless the refrigerator door is opened. In other words, the door must be opened to check whether the desired food is stored in the space inside the cabinet or in a separate storage space provided in the door. Additionally, if there is no desired food when opening the auxiliary door or home bar, there is an inconvenience such as having to open the main door again, and at this time, there is a problem that unnecessary leakage of cold air may occur.

To solve this problem, a portion of the front of the refrigerator door may be made of a transparent material, but in this case, problems with insulation inside the refrigerator may occur. Also, if the inside of the refrigerator can be seen even when it is not in use, there is a problem in that food is exposed to the outside, resulting in a very poor appearance.

The purpose of an embodiment of the present invention is to provide a refrigerator in which at least a portion of the refrigerator door can be selectively made transparent by a user's manipulation, allowing the interior of the refrigerator to be seen through when the refrigerator door is closed.

The purpose of an embodiment of the present invention is to provide a refrigerator that allows the interior of the refrigerator to be visualized by selectively making the refrigerator door transparent by a knocking operation.

The purpose of an embodiment of the present invention is to provide a refrigerator that is easy to install and assemble with a sensing device that detects user operation, and is easy to maintain.

A refrigerator according to an embodiment of the present invention includes a cabinet forming a storage space; a door that opens and closes at least a portion of the storage space; and a lighting unit disposed in the storage space, wherein the door includes a front panel forming a front surface of the door made of a glass material with controlled transmittance or reflectance, and the door is disposed to be spaced apart from the front panel. A panel assembly including an insulating panel made of glass forming the rear of the panel, and a gap forming a sealed first space between the front panel and the insulating panel; a first cap deco connected to one side of the front panel to form a first side of the door; a second cap deco connected to the other side of the front panel to form a second side of the door; A door liner connected to the insulation panel and forming a rear surface of the door; a side frame connected to the front panel and forming a side of the door; An inlet provided in a second space formed by the first cap decor, the second cap decor, the door liner, the side frame, and the panel assembly, and formed in at least one of the first cap decor or the second cap decor. An insulation material formed by filling a foaming liquid through; and a sensing device installed on the first cap decor and configured to control the lighting unit, and a rear surface of the front panel facing the side frame, the first cap decor, the second cap decor, and the gap. A bezel printed in black color is formed so that light cannot pass through, so that when the lighting unit is not turned on, the front panel is black or in a mirror-like state.

The storage space includes a first storage space formed in an upper part of the cabinet and a second storage space formed in a lower part of the cabinet, and the door opens and closes a first area of the first storage space. It includes one door and a second door that opens and closes a second area of the first storage space, wherein the second door is coupled to the cabinet, a main door that is rotatable and has an opening, and a main door that is coupled to the main door to open and close the second area of the first storage space. It is rotatable and may include a subdoor that opens and closes the opening.

The sensing device includes a proximity sensing device that detects a user's approach, a door handle is formed to be recessed on the lower surface of the main door, the sub-door is rotatably coupled to the main door by a sub-hinge, and the A handle recessed on one side of the subdoor may be formed closer to the proximity sensing device than the subhinge.

The storage space includes a first storage space formed at the top of the cabinet and a second storage space formed at the bottom of the cabinet, and the lighting unit includes a first main storage space installed on the ceiling of the first storage space. It includes a lighting unit and a second main lighting unit installed on both walls of the first storage space, and when the door closes at least a portion of the first space, the first main lighting unit and the second main lighting When the unit is turned on, the user can check the inside of the first storage space through the panel assembly.

The first surface defines the lower surface of the door, the second surface defines the upper surface of the door, the first cap decor defines the lower cap decor, and the second cap decor defines the upper cap decor. By defining, it may be characterized in that a proximity detection device for confirming the proximity of a user and a detection device PCB for signal processing of the proximity detection device are installed on the lower cap deco forming the lower surface of the door.

The injection port includes a first injection port and a second injection port spaced apart from the first injection port formed on either the first side of the first cap deco or the second side of the second cap deco. It can be characterized.

The sensing device PCB may be connected to the proximity sensing device through a signal line and may be installed to be detachable from the lower cap deco.

The first space may be formed in a vacuum state or may be filled with an inert gas.

The bezel extends in a square shape to surround the see-through area formed on the front panel, and the width of the bezel located at the top and bottom of the front panel is larger than the width of the bezel located on both left and right sides of the front panel. It can be characterized as:

The insulation panel includes a first insulation panel arranged to be spaced apart from the front panel, and a second insulation panel arranged to be spaced apart from the first insulation panel to form the rear of the door, and the front panel and the first insulation panel. A plurality of first spaces are formed between the insulation panels and between the first and second insulation panels by a plurality of gaps, and the door liner may be in contact with the back of the second insulation panel.

The insulation panel is formed to be smaller in size than the front panel and is located in the inner area of the front panel, and the front surfaces of the first cap decor and the second cap decor are disposed behind the front panel and are directed forward by the bezel. It can be characterized by preventing exposure.

The side frame includes a first side frame forming a left side of the door and a second side frame forming a right side of the door, and the front surfaces of the first side frame and the second side frame are behind the front panel. It may be characterized in that it is disposed so as not to be exposed to the front by the bezel.

The inlet may be disposed at the rear of the bezel located on one of the upper and lower ends of the front panel, be recessed to face the gap, and be press-fitted into the inlet cover.

The first cap deco may be characterized in that a knock detection device for detecting a user's knock input applied to the front panel and a detection device PCB for signal processing of the knock detection device are installed together.

The lower cap deco further includes a detection device accommodating portion that is recessed in the direction of the second space and provides a third space separated from the second space, and an accommodating portion cover that closes the third space, The sensing device PCB may be connected to the sensing device through a signal line within the third space.

It may further include a main control unit installed in the cabinet and capable of controlling on/off of the lighting unit, and the detection device PCB may be installed closer to the detection device than the main control unit.

The accommodating cover is formed with a PCB mounting portion on which the sensing device PCB is mounted, and when the accommodating cover is fastened to the first cap deco, the sensing device PCB is disposed in the third space. can do.

The sensing device PCB and the sensing device may be accommodated together in the third space.

The side frame may be made of a metal material including a side portion forming the side of the door and a front portion bent in front of the side portion, and the front portion may be coupled to the rear of the front panel.

A penetrating portion may be formed on the front surface of the sensing device accommodating portion in contact with the front panel, and the sensing device may be installed opposite to the penetrating portion in the third space.

The following effects can be expected from the refrigerator and refrigerator control method according to the proposed embodiment.

In the refrigerator according to an embodiment of the present invention, a portion of the door is provided with a panel assembly that selectively transmits and reflects light, and a lighting unit that is turned on and off by the user's operation is provided inside the door so that the user can control the light while the door is closed. By manipulating the lighting unit, it is possible to see through the inside of the room.

Therefore, the space inside the cabinet can be checked even without opening the door, and the location of the food can be easily confirmed, thereby improving convenience of use. In addition, unnecessary opening and closing of the door can be prevented, thereby preventing loss of cold air, thereby improving power consumption and improving storage performance.

In addition, the panel assembly has a half-glass-like structure, allowing the interior to be seen when the lighting unit is turned on, and has a mirror-like shape when the lighting unit is not turned on, making the exterior of the refrigerator door stand out more. You can do this.

Additionally, a microphone may be provided on the back of the panel assembly to detect sound caused by vibration when a user knocks on the panel assembly. Accordingly, the lighting unit can be controlled to be turned on and off by a user's knock operation, and the panel assembly can be selectively made transparent.

Therefore, the panel assembly can be made transparent through a simple operation, and the sound of vibration transmitted through the same medium is the same no matter where the front of the panel assembly is knocked, so there is an advantage of easy operation and effective detection.

In addition, the microphone module containing the microphone of the knock detection device has a structure that is in close contact with the back of the panel assembly, thereby improving the detection rate. At this time, vibration or sound waves of a specific wavelength generated when the panel assembly is knocked are judged to be valid signals to prevent misrecognition due to abnormal noise such as external noise.

In addition, the PCB, a detection device that determines the knock signal, is placed together with the knock detection device to transmit this to the main control unit inside the refrigerator cabinet when a valid knock signal is determined, thereby minimizing noise when determining the knock signal, thereby improving signal processing. Efficiency and reliability can be improved. In addition, when a signal input from the knock detection device is detected multiple times within a set time, it is determined to be a valid signal, thereby further improving the reliability of the operation.

In addition, a bezel is formed on the front panel, and the detection device is located on the bezel so that a knock operation on the front panel can be easily recognized, while at the same time preventing the detection device from being exposed to the outside, thereby improving the appearance. There will be. Additionally, by forming the sensing device on the bezel at the bottom of the front panel, the bezels at other locations on the front panel can be relatively thin, and thus the visible portion of the door can be made to appear wider.

In addition, the knock detection device, the proximity detection device for detecting the proximity of the user, and the detection device PCB are accommodated and mounted in the detection device accommodation portion recessed at the bottom of the door, making installation and assembly of the detection device easy and maintenance. It becomes easy.

In addition, when the knock detection device is installed, it can be fixed in the correct position by sliding insertion without a separate screw fastening or coupling structure, and provides a structure that can be closely adhered to the front panel during the sliding process, thereby improving productivity and assembly workability. Improved effects can be expected.

1 is a perspective view of a refrigerator according to an embodiment of the present invention.
Figure 2 is a front view with all doors of the refrigerator open.
Figure 3 is a perspective view with the sub door of the refrigerator open.
Figure 4 is a front view of the sub door in an opaque state.
Figure 5 is a front view of the sub door in a transparent state.
Figure 6 is a perspective view of the main door and sub door of the refrigerator combined.
Figure 7 is a perspective view of the sub door.
Figure 8 is a perspective view cut away at 8-8' of Figure 7.
Figure 9 is an exploded perspective view of the knock detection device combination structure of the sub door viewed from the front.
Figure 10 is an exploded perspective view of the knock detection device combination structure of the sub door viewed from below.
Figure 11 is a partial perspective view showing the knock detection device and the proximity detection device installed.
Figure 12 is an exploded perspective view of the knock detection device.
Figure 13 is a cross-sectional view of the microphone module of the knock detection device.
Figure 14 is a cross-sectional view taken along line 14-14' of Figure 7.
Figure 15 is a cross-sectional view taken along line 15-15' of Figure 7.
Figures 16 to 19 are diagrams sequentially showing the installation process of the knock detection device.
Figure 20 is a diagram showing the state in which the knock detection device has been completely installed.

Hereinafter, specific embodiments of the present invention will be described in detail along with the drawings. However, the present invention cannot be said to be limited to the embodiments in which the idea of the present invention is presented, and other inventions that are regressive or other embodiments included within the scope of the present invention can be easily developed by adding, changing, or deleting other components. can be suggested.

1 is a perspective view of a refrigerator according to an embodiment of the present invention. And, Figure 2 is a front view with all doors of the refrigerator open. And, Figure 3 is a perspective view with the sub door of the refrigerator open.

As shown in the drawing, the external appearance of the refrigerator 1 according to an embodiment of the present invention may be formed by a cabinet 10 forming a storage space and a door opening and closing the storage space.

The interior of the cabinet 10 may be divided into upper and lower sections by a barrier 11, and a refrigerating compartment 12 may be formed at the top of the cabinet 10 and a freezer compartment 13 may be formed at the bottom of the cabinet 10. This can be formed.

Additionally, various storage members 121 such as shelves, drawers, or baskets may be provided inside the refrigerating compartment 12. The storage member 121 may be withdrawn and withdrawn when the door is opened as needed, and food can be stored by being withdrawn and withdrawn. The refrigerating compartment 12 may be equipped with a lighting unit 85 to illuminate the refrigerating compartment. The lighting unit 85 may also be placed in the freezer 13 and may be placed anywhere on the inner wall of the freezer.

Inside the freezer 13, a freezer storage member 131 in the shape of a drawer that can be withdrawn and retracted may be mainly disposed, and these freezer compartment storage members 131 may be configured to be withdrawn and withdrawn in conjunction with the opening of the freezer door 30. It may be possible.

The door may be composed of a refrigerator door 20 and a freezer door 30. The refrigerating compartment door 20 may be configured to open and close the open front surface of the refrigerating compartment 12 by rotating it, and the freezer compartment door 30 may be configured to open and close the open front surface of the freezing compartment 13 by rotating it. In addition, the refrigerating compartment door 20 and the freezer compartment door 30 are provided as a left and right pair and are configured to shield the freezer compartment 13 and the freezer compartment 13, respectively.

The refrigerating compartment door 20 and the freezer compartment door 30 may be provided with a plurality of door baskets, and the door basket is a storage member ( 121,131) and can be configured so as not to interfere with them.

The refrigerator compartment door 20 and the freezer compartment door 30 form an overall appearance when viewed from the front and are made of a metal material, so that the entire refrigerator 1 can have a metal texture. Additionally, if necessary, the refrigerating compartment door 20 may be equipped with a dispenser for dispensing water or ice.

Meanwhile, in an embodiment of the present invention, a bottom freeze type refrigerator with a freezer compartment provided at the bottom is described as an example, and a refrigerator with a French type door that opens and closes a space by rotating a pair of doors, respectively, is described as an example. However, the present invention It can be applied to all types of refrigerators equipped with doors, regardless of the shape of the refrigerator.

Meanwhile, among the pair of refrigerating compartment doors 20, the refrigerating compartment door 20 on the right side (as seen in FIG. 1) may be configured to be dually opened and closed. In detail, the refrigerating compartment door 20 located on the right has a main door 40 whose exterior is made of metal and opens and closes the refrigerating compartment 12, and is rotatably disposed on the inside of the main door 40. It may be composed of a sub door 50 that opens and closes the opening of the main door 40.

The main door 40 may be formed to have the same size as the refrigerating compartment door 20 on the left (as seen in FIG. 1) of the pair of refrigerating compartment doors 20, and has a main hinge 401 and a middle hinge 402. It is rotatably mounted on the cabinet 10 to open and close a part of the refrigerating compartment 12.

And, an opening 403 is formed in the main door 40. A door basket 404 is mounted on the back of the main door 40, including the inside of the opening 403. Accordingly, the user can access the door basket 404 through the opening 403 without opening the main door 40. At this time, the size of the opening 403 occupies most of the front surface of the main door 40 except for a portion of the circumference of the main door 40.

The sub door 50 is rotatably mounted inside the opening 403 to open and close the opening 403. Also, at least a portion of the sub door 50 is made of a transparent material such as glass. Therefore, by opening the sub-door 50, access to the opening 403 is possible, and at the same time, the inside of the opening 403 can be seen even when the sub-door 50 is closed. Accordingly, the sub door 50 may be called a see-through door.

Meanwhile, the glass material constituting the sub door 50 can be configured to adjust the light transmittance and reflectance so that it can be selectively manipulated into a transparent or opaque state according to the user's manipulation. Therefore, it becomes transparent only in the state desired by the user to make the interior visible, and in other states it can remain opaque.

Figure 4 is a front view of the sub door in an opaque state.

As shown in the drawing, when both the main door 40 and the sub door 50 are closed and there is no operation on the refrigerator 1, the sub door 50 is an opaque black color or mirror. It becomes like cotton. Accordingly, the sub door 50 cannot visualize the space inside the sub door 50, that is, the storage space of the main door 40 and the inner space of the refrigerating compartment 12.

Accordingly, the sub door 50 maintains its black color, and the exterior of the refrigerator has a beautiful black mirror-like texture, allowing it to have a simple and beautiful appearance. In addition, this appearance is harmonized with the metal texture of the main door 40, the refrigerator door 20, and the freezer door 30, giving a more luxurious image.

Figure 5 is a front view of the sub door in a transparent state.

As shown in the drawing, when both the main door 40 and the sub door 50 are closed, the sub door 50 can be made transparent through a specific operation by the user.

For example, when the lighting unit 85 provided in the refrigerator is turned on by the user's manipulation to brighten the interior of the refrigerator, the sub door 50 may become transparent. In addition, when a door lighting unit 49 that can be turned on and off by user manipulation is provided at the top of the main door 40, that is, the top of the opening 403, the inside of the sub door 50 is brightened. Thus, the sub door 50 can be made transparent.

When the sub door 50 is in a transparent state, the storage space of the main door 40 and the internal space of the refrigerating compartment 12 can be visualized. Accordingly, the user can check the food storage status of the storage space of the main door 40 and the internal space of the refrigerating compartment 12 without opening the main door 40 and the sub door 50.

Additionally, when the sub-door 50 becomes transparent, the display unit 60 disposed behind the sub-door 50 also becomes visible and can display the operating state of the refrigerator to the outside.

Specific operations for visualizing the storage space of the main door 40 and the internal space of the refrigerating compartment 12 through the sub door 50 will be discussed in more detail below.

Figure 6 is a perspective view of the main door and sub door of the refrigerator combined.

As shown in the drawing, the main door 40 includes an out plate 41 made of metal, a door liner 42 coupled to the out plate 41, and the out plate 41 and the door liner 42. ) The outer shape can be formed by the door cap deco 45 provided at the top and bottom of the door.

The out plate 41 may be formed of a plate-shaped stainless material and may be bent to form a portion of the front and peripheral surfaces of the main door 40. And, the area corresponding to the opening 403 is formed to be open.

Additionally, the door liner 42 may be injection-molded from a plastic material and forms the back of the main door 40. Additionally, the door liner 42 is also formed to have an open area corresponding to the opening 403. In addition, a plurality of uneven structures may be formed in the opening 403 so that the door basket can be mounted. Additionally, a rear gasket may be provided around the rear surface of the door liner 42 to come into close contact with the periphery of the cabinet 10 to prevent cold air leakage between the main door 40 and the cabinet 10.

Additionally, a door lighting unit 49 may be provided on the upper surface of the door liner 42 to illuminate the inside of the opening 403. The door lighting unit 49 can illuminate the entire opening 403 by irradiating light from the top to the bottom, and can make the sub-door 50 transparent.

Additionally, the door handle 462 may be recessed on the lower surface of the main door 40, and the user may place his or her hand on the door handle 462 to rotate the main door 40 to open the refrigerating compartment 12. It can be opened and closed.

Meanwhile, a door frame 43 may be further formed between the out plate 41 and the door liner 42. The door frame 43 is coupled between the out plate 41 and the door liner 42, respectively, and forms the perimeter of the opening 403.

When the out plate 41, the door liner 42, the door frame 43, and the cap deco 45 are combined, the inner space of the main door 40 can be filled with foaming liquid to form an insulation material. There will be. That is, an insulating material is disposed inside the peripheral area of the opening 403 to insulate the inner space and the outer space.

Additionally, a frame step portion 431 protruding inward may be formed on the inner surface of the door frame 43. Accordingly, when the sub door 50 is closed, the frame step portion 431 can support the sub door 50.

In addition, hinge holes 433 are opened at the top and bottom of one side of the door frame 43, into which sub hinges 51 and 52 for mounting the sub door 50 are mounted. The hinge hole 433 is opened at a position facing the side of the sub door 50 and is formed so that the sub hinges 51 and 52 can be inserted.

Figure 7 is a perspective view of the sub door. And, Figure 8 is a perspective view cut away at 8-8' of Figure 7.

As shown in the drawing, the sub door 50 may be formed in a shape corresponding to the shape of the opening 403. The sub door 50 includes a panel assembly 54 composed of a plurality of glasses stacked at regular intervals, side frames 55 and 56 forming both sides of the sub door 50, and the sub door 50. It may be comprised of a sub door liner 59 forming the rear perimeter, and an upper cap deco 57 and a lower cap deco 58 forming the upper and lower surfaces of the sub door 50.

The panel assembly 54 forms the entire front surface of the sub door 50. The panel assembly 54 may be composed of a front panel 541 that forms the front exterior and an insulating panel 542 spaced apart from the rear of the front panel 541. The insulation panel 542 may be composed of a plurality of insulation panels 542, and an interstitial bar 543 is provided between the front panel 541 and the insulation panel 542 and the plurality of insulation panels 542.

The front panel 541 and the insulation panel 542 are made of glass or a material capable of seeing the inside, and are configured to selectively see through the inside of the refrigerator. Additionally, the front panel 541 and the insulation panel 542 may have an insulating material or an insulating structure and may be configured to prevent cold air from leaking out.

The front panel 541 may be made of a glass material that allows selective internal transparency depending on the transmittance and reflectance of light, and may be called a half mirror. The front panel 541 is configured to selectively view the rear of the sub door 50 depending on whether the main lighting unit 85 or the door lighting unit 49 in the room is turned on or off.

That is, when the door lighting unit 49 is turned on, the light inside the door passes through the front panel 541 and the front panel 541 appears transparent. Accordingly, the interior space behind the sub door 50 or the storage space formed in the main door 40 can be viewed from the outside when the sub door 50 is closed.

And, when the door lighting unit 49 is turned off, light does not pass through the front panel 541 but is reflected, and thus the front panel 541 becomes like a mirror surface. In this state, the interior space behind the sub door 50 or the storage space formed in the main door 40 cannot be seen from the outside.

The insulation panel 542 may be formed to be smaller in size than the front panel 541 and may be located in the inner area of the front panel 541. In addition, the insulation panel 542 is preferably chemically strengthened glass that is chemically strengthened by immersing the glass in an electrolyte solution above the glass transition temperature.

Additionally, a low-emissivity coating layer may be formed on the back of the insulation panel 542 to reduce heat transfer into the storage compartment by radiation. Glass on which the low-emission coating layer is formed is called low-emission glass, and the low-emission coating layer can be formed by depositing silver or the like on the surface of the glass, usually by sputtering.

In addition, the sealed space between the front panel 541 and the insulation panel 542 formed by the gap 543 and the sealed space between the plurality of insulation panels can be formed in a vacuum state to be insulated. .

If necessary, the sealed space between the front panel 541 and the insulation panel 542 and the sealed space between the plurality of insulation panels 542 may be filled with an inert gas such as argon gas for insulation. Inert gases have better insulating properties than regular air. For this reason, it is possible to secure insulation performance by forming a predetermined space filled with an inert gas between the front panel 541 and the insulation panel 542 and between the plurality of insulation panels 542.

The insulation panel 542 may be formed as a single panel and mounted to be spaced apart from the front panel 541. If necessary, it may be possible to configure two or more insulation panels 542 to be spaced apart.

The side frames 55 and 56 form left and right sides of the sub door 50. The side frames 55 and 56 may be made of metal and connect the panel assembly 54 and the door liner 42.

The side frames 55 and 56 include a first side frame 55 forming one surface on which the sub hinges 51 and 52 are mounted, and a second side frame forming a handle 561 for rotation by the user. It can be composed of (56).

The first side frame 55 extends vertically and is configured to connect the upper hinge 51 and the lower hinge 52. The first side frame 55 may be formed of a metal such as aluminum or a high-strength material, and the upper hinge 51 and lower hinge 52 maintain the correct mounting position to maintain the correct mounting position of the sub door 50. Make sure the mounting position does not change due to weight. Therefore, the sub door 50 can maintain its initial mounting position on the main door 40, and the outer end of the sub door 50 and the opening 403 of the main door 40 are very close to each other. Interference does not occur when rotating while maintaining the distance.

The second side frame 56 may be made of metal or a high-strength material like the first side frame 55. The second side frame 56 may extend from the top to the bottom of the sub door 50, and has a recessed handle 561 through which the user can put his/her hand.

The upper cap deco 57 forms the upper surface of the sub door 50 and connects the upper ends of the first side frame 55 and the second side frame 56. And, it is coupled to the top of the panel assembly 54 and the top of the sub-door liner 59.

The lower cap deco 58 forms the lower surface of the sub door 50 and connects the lower ends of the first side frame 55 and the second side frame 56. And, it is coupled to the bottom of the panel assembly 54 and the bottom of the sub-door liner 59.

Additionally, a proximity detection device 81 and a knock detection device 82 are provided at the lower part of the subdoor 50. The proximity detection device 81 is a device for checking the user's proximity, and the knock detection device 82 is a device for detecting a knock on the sub-door 50 by the user. The proximity detection device 81 and the knock detection device 82 are attached to the back of the front panel 541 and are provided at the bottom of the front panel 541 adjacent to the second side frame 56. You can.

The proximity detection device 81 and the knock detection device 82 selectively make the sub-door 50 transparent so that the inside of the sub-door 50 can be seen. Of course, if necessary, the proximity detection device 81 may be omitted, and only the knock detection device 82 may be installed. The specific structures of the proximity detection device 81 and the knock detection device 82 will be reviewed below.

Meanwhile, the proximity detection device 81 and the knock detection device 82 may be disposed in the area of the bezel 5411 along the rear circumference of the front panel 541. The bezel 5411 may be formed so that light cannot pass through, and includes side frames 55, 56, upper cap deco 57, lower cap deco 58, and gap ( 543) is not exposed to the front through the front panel 541.

Meanwhile, a transparent portion 5412 may be formed at a position corresponding to the proximity detection device 81 in the bezel 5411 formed at the bottom of the front panel 541. The transparent part may be formed in a shape corresponding to the front of the proximity sensing device, and the bezel 5411 will not be printed.

Additionally, the front surface of the proximity sensing device 81 in contact with the transparent portion 5412 may be formed in the same color as the bezel 5411. Therefore, even when the front of the proximity sensing device 81 is exposed by the transparent portion 5412, the transparent portion 5412 area is not easily exposed and can have a sense of unity with the entire front panel 541.

Figure 9 is an exploded perspective view of the knock detection device combination structure of the sub door viewed from the front. And, Figure 10 is an exploded perspective view of the knock detection device combination structure of the sub door viewed from below. And, Figure 11 is a partial perspective view showing the knock detection device and the proximity detection device installed.

As shown in the drawing, a proximity detection device 81 and a knock detection device 82 may be provided at the bottom of the sub door 50. The height at which the proximity detection device 81 is installed is at the bottom of the sub-door 50, allowing detection for general adults, but for short infants, animals, or other objects lower than the height of the proximity detection device 81. It won't be detected.

Additionally, the knock detection device 82 is configured to recognize whether the user has knocked on the front panel 541 of the sub-door 50. A specific operation of the refrigerator 1 can be instructed by a knock operation detected by the knock detection device 82. For example, the door lighting unit 49 may be turned on by a user's knocking operation, and through this, the sub-door 50 may become transparent.

The specific structures of the proximity detection device 81 and the knock detection device 82 will be discussed in more detail below.

A lower hinge 52 may be mounted on the lower cap deco 58, which forms the lower surface of the sub door 50, and is located on one side away from the lower hinge 52, that is, the second side frame 56 and A sensing device receiving portion 582 is recessed on one adjacent side.

The detection device accommodation portion 582 is formed in a size that can accommodate the proximity detection device 81 and the knock detection device 82. And, the open lower surface of the sensing device accommodating part 582 can be shielded by the accommodating part cover 583.

A case fixing portion 5832 is formed on one side of the accommodating cover 583 to which a screw is fastened to secure the accommodating cover 583 to the lower cap deco 58. And, an inlet cover part 5831 is further formed on the other side of the receiving part cover 583. The inlet cover portion 5831 is formed on the lower cap deco 58 to shield the inlet 5824 through which the foaming liquid charged for forming the insulation material is injected.

When the accommodating cover 583 is mounted on the lower cap deco 58, the sensing device accommodating part 582 can be shielded, and at the same time, the inlet 5824 can also be shielded.

And, a PCB mounting portion 5833 is further formed on the upper surface of the receiving portion cover 583. The PCB mounting unit 5833 is equipped with a detection device PCB 83 for signal processing of the proximity detection device 81 and the knock detection device 82. The sensing device PCB 83 is connected to the proximity sensing device 81 and/or the knock sensing device 82 and may be mounted on the PCB mounting portion 5833.

The detection device PCB 83 is capable of processing signals from the proximity detection device 81 and/or the knock detection device 82, and is adjacent to the proximity detection device 81 and the knock detection device 82. It is located in a location and configured to process signals.

If the PCB that processes the signal is located at a long distance, there is a problem that noise generated when the detected signal moves through the signal line to be processed may increase. However, by arranging the detection device PCB 83 together at the location where the proximity detection device 81 and the knock detection device 82 are mounted, the main control unit 2 receives only whether or not a valid knock on signal is input. Through this, the noise effect caused by the signal line between the main control unit 2 and the sensing device PCB 83 can be minimized. That is, the main control unit 2 receives a signal with minimized noise through the sensing device PCB 83. Therefore, it is possible to secure an accurate recognition rate.

In particular, in the case of the knock detection device 82, the signal output by the microphone 8211 is in mV units, whereas the main control unit 2, which controls the overall operation of the refrigerator, basically receives signals in V units. am. Therefore, due to the difference in scale of these physical signals, it is not desirable for the main control unit 2 to determine whether it is a normal knock-on signal.

A refrigerator is an electronic device that uses high voltage/high current. Therefore, the amount of electrical noise generated is relatively large. This means that the signal in mV units output by the microphone 8211 may be more vulnerable to electrical noise.

Therefore, by arranging the detection device PCB 83 in a position adjacent to the knock detection device 82, it is possible to dramatically reduce noise and thereby improve the recognition rate.

Meanwhile, an inlet 584 through which foaming liquid is injected is further formed on one side of the lower cap deco 58 adjacent to the lower hinge 52, and the inlet 584 is connected by a separate inlet cover 5841. It can be shielded. Additionally, a plurality of hook portions 5842 are formed on the upper surface of the inlet cover 5841 to enable the inlet cover 5841 to be press-fitted into the inlet 584.

Also, a wire hole 5823 is formed on one surface of the sensing device receiving portion 582. The wires connected to the detection device PCB 83, the proximity detection device 81, and the knock detection device 82 may be guided to the outside of the sub door 50 through the wire hole 5823.

Meanwhile, the front of the detection device accommodating portion 582 in contact with the front panel 541 has a penetration opening so that the proximity detection device 81 and the knock detection device 82 can come into close contact with the front panel 541. Portions 5825 and 5826 may be formed, respectively.

A detection device mounting member 84 for mounting the knock detection device 82 is provided inside the detection device accommodating portion 582. The detection device mounting member 84 may be provided in the penetration portion 5826 for mounting the knock detection device 82.

The sensing device mounting member 84 may be molded together with the sensing device receiving portion 582 during molding of the lower cap deco 58, or may be molded as a separate member and placed inside the sensing device receiving portion 582. It may also be fixedly installed.

The sensing device mounting member 84 forms a seating surface 841 on which the knock sensing device 82 is mounted. Additionally, a portion of the seating surface 841 is inserted into the through portion 5826 and comes into contact with the rear surface of the front panel 541. In addition, the seating surface 841 may be formed to have a width greater than the thickness of the knock detection device 82 to easily seat and stably support the knock detection device 82. The seating surface 841 may correspond to the horizontal length of the penetrating portion 5826 or may be formed to be somewhat larger. Additionally, a first sidewall 842 protrudes from one end of the seating surface 841, that is, one end adjacent to the wire hole 5823. The first side wall 842 may be located further outside of one end of the penetrating portion 5826, and prevents the knock sensing device 82 from leaving the seating surface when the knock sensing device 82 is first inserted. It is prevented.

In addition, the elastic fixing part 843 and a cut portion 844 formed by cutting a portion of the seating surface 841 along the circumference of the elastic fixing part 843 may be formed on the seating surface 841. Accordingly, the elastic fixing part 843 is elastically deformable in the vertical direction.

The elastic fixing part 843 is fixed at one end and is composed of an extension part 8431 extending along the cut part 844 and a restraining part 8432 protruding upward from the end of the extension part 8431. You can. The restraining part 8432 presses one end of the knock detection device 82 and fixes it so that the knock detection device 82 does not move when the knock detection device 82 is completely installed in the correct position.

The restraint portion 8432 is formed vertically up and down and has a restraint surface 8433 that contacts one end of the knock detection device 82, and when the knock detection device 82 moves along the seating surface 841, the knock occurs. It may be composed of an inclined surface 8434 in contact with the lower surface of the sensing device 82.

Therefore, when the knock detection device 82 slides for installation while seated on the seating surface 841, it comes into contact with the inclined surface 8434, and the restraining portion 8432 is moved by the inclined surface 8434. ) is pressed downward and the extension portion 8431 can be elastically deformed. And, when the knock detection device 82 is completely moved to the correct position for installation, the extension portion 8431 is elastically restored, allowing the knock detection device 82 to be pressed and fixed from the side.

A guide portion 845 is formed to extend on a side of the elastic fixing portion 843, and a second side wall 846 is formed at an end of the guide portion 845. The second sidewall 846 may be located at one end of the penetrating portion 5826 and may be formed at a position where the knock detection device 82 is finally fixed. The second side wall 846 and the guide portion 845 form a receiving portion 847 on which the knock detection device 82 is mounted.

The inner surface of the guide part 845, that is, the surface facing the front panel 541, may be composed of a guide surface 8451 and a contact surface 8452. The guide surface 8451 may be formed to be inclined, and may be formed to become closer to the front panel 541 as it moves inward from the open end of the guide portion 845. Therefore, at the beginning when the knock detection device 82 is inserted toward the guide part 845, insertion into the guide part 845 becomes easy, and as it passes through the guide surface 8451, the knock detection device 82 is inserted into the guide part 845. 82 is pressurized by opening the front panel 541.

The close contact surface 8452 is formed in the area from the end of the guide surface 8451 to the second side wall 846, and the distance between the close contact surface 8452 and the front panel 541 is the knock detection device ( 82), and when the knock detection device 82 is positioned on the contact surface 8452, the knock detection device 82 may be pressed and pressed against the front panel 541.

Figure 12 is an exploded perspective view of the knock detection device. And, Figure 13 is a cross-sectional view of the microphone module of the knock detection device.

Looking at the structure of the knock detection device 82 in detail with reference to the drawings, the knock detection device 82 includes a microphone module 821 that detects a knock-on signal, and a device in which the microphone module 821 is accommodated. It may be configured to include a holder 823.

The microphone module 821 includes a microphone 8211 that directly senses sound waves and a microphone receiving portion 8212 that accommodates the microphone 8211. The microphone 8211 directly senses sound waves, is formed in a circular shape with a predetermined thickness, and is fixedly mounted inside the microphone module 821. One surface of the microphone 8211 may be referred to as a sound wave receiving unit 8213 that receives sound waves, and the sound wave receiving unit 8213 is disposed to face the opening 8214 of the microphone receiving unit 8212. Additionally, a signal line 8216 is connected to the other side of the microphone 8211, and the signal line 8216 can be connected to the sensing device PCB 83.

The microphone receiving portion 8212 is made of an elastic material such as rubber and is formed to be in close contact with the front panel 541. For this purpose, an opening 8214 is formed on one side of the microphone accommodating part 8212 adjacent to the microphone 8211 mounted inside the microphone accommodating part 8212, and a circular protrusion is formed around the opening 8214 ( 8215) can be formed. In addition, the protrusion 8215 is not tilted in one direction when the microphone receiving portion 8212 is in close contact with the front panel 541, and the entire front of the opening 8214 is in close contact with the front panel 541. to maintain.

A predetermined sealed space may be formed between the sound wave receiving unit 8213 and the opening 8214 that is in close contact with the protrusion 8215. Therefore, the front of the close contact space is sealed by a medium, that is, the front panel 541. Accordingly, the vibration transmitted through the inside of the medium causes the air within the predetermined space to vibrate, and sound waves caused by this vibration can be received by the microphone 8211.

Due to this sealing, it is possible to minimize external noise or vibration from entering the predetermined space. This can significantly reduce knock-on judgment errors and malfunctions due to external noise, and ensures a very accurate knock-on recognition rate. In other words, when a knock on input is applied, the accuracy of judging it as a knock on can be dramatically increased.

The holder 823 accommodates the microphone module 821, and a module seating portion 8231 that opens toward the front panel 541 may be formed. When the microphone module 821 is seated on the module seating portion 8231, at least the protrusion 8215 may be formed to protrude further than the front surface of the holder 823.

Additionally, a holder slot 8232 is formed in the holder 823 through which the signal line connected to the microphone 8211 enters and exits. The holder slot 8232 is formed to be open on one side of the module seating portion 8231. A signal line passing through the holder slot 8232 may pass through the support member slot 8252 and be connected to the sensing device PCB 83.

Additionally, a holder protrusion 8233 protruding laterally is formed on one side of the outer surface of the holder 823. The holder protrusion 8233 protrudes only on one side of the circumference of the holder 823, and comes into close contact with the restraint portion 8432 when the knock detection device 82 is mounted by the detection device mounting member 84. It protrudes so that it can be

Therefore, the holder protrusion 8233 provides directionality when mounting the knock detection device 82 to prevent incorrect installation of the knock detection device 82, and allows it to be pressurized and fixed by the restraint portion 8432. do.

The knock detection device 82 is located at the edge of the front panel 541, but the effective input portion of the user's knock operation is not limited to this. Due to the nature of the microphone 8211, which detects sound waves caused by vibration rather than the vibration itself, in an environment where the microphone is in close contact with the medium, no matter where the knock is performed, the sound waves are transmitted through the same continuous medium and can be effectively detected. Therefore, the knock detection device 82 can be placed at one end to maximize the arrangement of the wires and the visible area of the sub-door 50. At the same time, no matter which point the user knocks on the front panel 541, detection is possible through the microphone 8211 attached to the same medium.

In detail, the area where the user applies the knock input may be any area defined by the front of the front panel 541. Also, most of the front panel 541 except for the edge portion is a see-through area that is substantially selectively transparent, so the knock-on detection device cannot be disposed.

Therefore, the knock detection device 82 is preferably located in the bezel 5411 area of the front panel 541. In particular, locating it at the bottom rather than the left and right sides of the front panel 541 can be a way to minimize the bezel on the left and right sides and top of the front panel 541. Due to the shape of the bezel 5411, the see-through area can be expanded and is located at the bottom where the user's gaze is relatively less visible, making the see-through area appear wider to the user.

The knock detection device 82 is located in the area of the bezel 5411 and is not exposed to the outside, but has a structure that is in close contact with the front panel 541, so the user can determine any position of the front panel 541. Even if the user knocks, it is possible to detect the user's knock.

Meanwhile, in addition to the knocking operation, there may be many environmental factors that apply vibration to the front of the front panel 541. The front of the sub-door 50 may vibrate due to shock caused by opening and closing the main door 40 and the sub-door 50, strong external noise, etc., and input from this external environment may be judged as a knock signal. There is also room.

Accordingly, the sensing device PCB 83 can determine that the user knocks on the front of the sub-door 50 multiple times as a normal knock input. More specifically, tapping multiple times at predetermined time intervals can be judged as a normal knocking input.

For example, if the user knocks on the front of the sub-door 50 twice within a predetermined time, it can be determined as a normal knock input. Analyzing the knock pattern of a typical user, it can be seen that the interval between the first and second knocks is less than about 600 ms. That is, considering that 1 second (s) is 1000 ms, the occurrence of the first and second knocks with an interval of less than 1 second can be judged as a normal knock input.

Therefore, by setting this time interval, it is possible to significantly prevent an abnormal input from being mistaken as a knock signal.

Meanwhile, the intensity of the knock may vary from user to user. However, since the medium is the same, the variation in intensity may be large, but the variation in vibration pattern can be seen to be very small. Therefore, the deviation in the intensity of the knock can be offset through an algorithm, and a normal knock input can be effectively recognized by using the pattern of the knock input and the time interval between knocks as factors.

Conversely, this means that the recognition of abnormal inputs as knock inputs can be significantly reduced.

Figure 14 is a cross-sectional view taken along line 14-14' of Figure 7. And, Figure 15 is a cross-sectional view taken along line 15-15' of Figure 7.

As shown in the drawing, the knock detection device 82 can be mounted inside the detection device accommodation portion 582 by the detection device mounting member 84. At this time, the knock detection device 82 is completely accommodated in the space inside the receiving portion 847 formed by the guide portion 845 with the holder protrusion 8233 in close contact with the restraining portion 8432. do.

That is, the knock detection device 82, which is slidably inserted into the receiving part 847 through the guide surface 8451 of the guide part 845, is directed toward the front panel 541 by the contact surface 8452. The knock detection device 82 is brought into close contact.

At this time, the width between the front panel 541 and the contact surface 8452 becomes smaller than the thickness of the knock detection device 82. Additionally, the knock detection device 82 is configured to have the microphone module 821 mounted on a holder 823 made of plastic. At this time, the microphone module 821 may protrude forward by a predetermined length D.

Since the external shape of the microphone module 821 is formed by the microphone receiving portion 847 made of an elastic material such as rubber, therefore, when the knock detection device 82 is installed, the microphone module 821 protrudes by the protruding distance D. It can be compressed.

Accordingly, the knock detection device 82 can be inserted into the accommodating part 847 by compressing the microphone module 821, and can be fixed inside the accommodating part 847 in a compressed state. There will be. In addition, the front of the microphone module 821 is in a compressed state and comes in close contact with the front panel 541, so that no gap occurs and the user's knock signal is effectively received.

Hereinafter, the above and the installation process of the knock detection device will be reviewed sequentially with reference to the drawings.

Figures 16 to 19 are diagrams sequentially showing the installation process of the knock detection device.

As shown in the drawing, in order to mount the knock detection device 82, the inside of the detection device accommodation portion 582 is first opened and the detection device mounting member 84 is assembled or placed.

In this state, as shown in FIG. 16, the knock detection device 82 is inserted into the detection device receiving portion 582, and the seating surface 841 is inserted through the first side wall 842 side. It is inserted so that it is seated in. At this time, the knock detection device 82 is inserted so that the microphone module 821 faces the front panel 541 and the holder protrusion 8233 faces the first side wall 842.

When the knock detection device 82 is seated on the seating surface 841, the state is as shown in FIG. 17. At this time, the holder protrusion 8233 protrudes to the right, and the front half of the knock detection device 82 is inserted into the through portion 5826. At this time, the upper surface of the knock detection device 82 comes into contact with the upper end of the penetrating portion 5826. In this state, the user slides the knock detection device 82 along the seating surface 841 to the left toward the receiving portion 847.

As shown in FIG. 18, the lower surface of the knock detection device 82 passes through the elastic fixing part 843 during the sliding movement of the knock detection device 82. The lower surface of the knock detection device 82 is initially in contact with the inclined surface 8431 of the elastic fixing part 843, and when the knock detection device 82 is further moved, the lower surface of the elastic fixing part 843 is in contact with the inclined surface 8431 of the elastic fixing part 843. It moves along the slope 8431. In this process, the extension part 8431 is elastically deformed and the restraint part 8432 moves downward.

In the state shown in FIG. 18, since there is no interference with the lateral movement of the knock detection device 82, the knock detection device 82 can be moved further. When the knock detection device 82 is moved further laterally, the knock detection device 82 is inserted into the receiving portion 847.

At this time, the knock detection device 82 moves along the guide surface 8451 of the guide portion 845, and the knock detection device 82 naturally faces the front panel 541. As the knock detection device 82 moves the guide surface 8451, the front of the knock detection device 82 comes into contact with the front panel 541, and the microphone made of elastic material protrudes toward the front of the holder 823. The front of the module 821 is compressed.

In this state, as shown in FIG. 29, when the knock detection device 82 is completely pushed to the side and brought into close contact with the end of the receiving part 847, there is a gap between the elastic fixing part 843 and the lower surface of the knock detection device 82. The interference is released and the elastic fixing part 843 is elastically restored to its original position.

And, the restraining surface 8432 of the elastic fixing part 843 is in contact with the holder protrusion 8233. In this process, when the holder protrusion 8233 goes beyond the restraint part 8432 of the elastic fixing part 843, the user can feel a “click” sound and a locking sound, and through this process, the user can detect the knock. It is possible to recognize completion of installation of the device 82.

Figure 20 is a diagram showing the state in which the knock detection device has been completely installed.

As shown in the drawing, when the knock detection device 82 is completely inserted inside the receiving part 847, a portion of the rear side of the knock detection device 82 is obscured by the guide part 845. do.

Additionally, the holder protrusion 8233 comes into contact with the restraint portion 8432 of the elastic fixing portion 843, and movement in the right direction is restricted. In addition, the left side of the knock detection device 82 is also restrained by the second sidewall 846, and the upper surface of the knock detection device 82 is restrained by the top of the penetration portion 5826. It becomes a state.

In this state, the knock detection device 82 can be installed and completely fixed. Additionally, the front of the knock detection device 82 can be brought into close contact with the front panel 541 with the microphone module 821 compressed. Accordingly, not only can the knocking operation of the front panel 541 be reliably detected, but also the mounting position can be maintained in a stable state without changing or moving even when subjected to shock generated when opening and closing the sub door 50.

Claims (20)

A cabinet forming a storage space;
a door that opens and closes at least a portion of the storage space; and
In the refrigerator including a lighting unit disposed in the storage space,
The door is
A front panel made of glass with controlled transmittance or reflectance forming the front of the door, an insulation panel made of glass arranged to be spaced apart from the front panel and forming the rear of the door, and between the front panel and the insulation panel. A panel assembly including a gap forming a sealed first space;
a first cap deco connected to one side of the front panel to form a first side of the door;
a second cap deco connected to the other side of the front panel to form a second side of the door;
A door liner connected to the insulation panel and forming a rear surface of the door;
a side frame connected to the front panel and forming a side of the door;
An inlet provided in a second space formed by the first cap decor, the second cap decor, the door liner, the side frame, and the panel assembly, and formed in at least one of the first cap decor or the second cap decor. An insulation material formed by filling a foaming liquid through; and
It is installed on the first cap deco and includes a sensing device configured to control the lighting unit,
On the back of the front panel opposite the side frame, the first cap decor, the second cap decor, and the gap,
A bezel printed in black is formed to prevent light from passing through.
When the lighting unit is not turned on,
A refrigerator, characterized in that the front panel is black or has a mirror surface. According to claim 1,
The storage space is,
A first storage space formed in the upper part of the cabinet,
It includes a second storage space formed in the lower part of the cabinet,
The door is
A first door opening and closing a first area of the first storage space,
It includes a second door that opens and closes the second area of the first storage space,
The second door is,
A main door that is rotatable and has an opening coupled to the cabinet, and
A refrigerator including a sub-door that is rotatable by being coupled to the main door and opens and closes the opening. According to clause 2,
The sensing device includes a proximity sensing device that detects user approach,
A door handle is formed to be recessed on the lower surface of the main door,
The subdoor is,
Rotatably coupled to the main door by a sub-hinge,
A handle recessed on one side of the subdoor
A refrigerator, characterized in that it is formed closer to the proximity detection device than the sub-hinge. According to claim 1,
The storage space is,
A first storage space formed in the upper part of the cabinet,
It includes a second storage space formed in the lower part of the cabinet,
The lighting unit is,
A first main lighting unit installed on the ceiling of the first storage space,
It includes a second main lighting unit installed on both walls of the first storage space,
In a state where the door closes at least a portion of the first space
A refrigerator characterized in that when the first main lighting unit and the second main lighting unit are turned on, the user can check the inside of the first storage space through the panel assembly. According to claim 1,
The sensing device includes a proximity sensing device,
The first surface defines a lower surface of the door,
The second surface defines the upper surface of the door,
The first cap deco defines the lower cap deco,
The second cap deco defines the upper cap deco,
To the lower cap deco forming the lower surface of the door
A refrigerator, characterized in that the proximity detection device for checking the proximity of a user and the detection device PCB for signal processing of the proximity detection device are installed together. According to clause 5,
The injection port is,
A first injection port, and a second injection port arranged to be spaced apart from the first injection port.
A refrigerator, characterized in that it is formed together on either the first side of the first cap deco or the second side of the second cap deco. According to clause 5,
The sensing device PCB is connected to the proximity sensing device through a signal line,
A refrigerator characterized in that it is installed detachably from the lower cap deco. According to claim 1,
In the first space,
A refrigerator characterized in that it is formed in a vacuum state or filled with an inert gas. According to claim 1,
The bezel is,
It is formed to extend in a square shape to surround the see-through area formed on the front panel.
Than the width of the bezel located on both left and right sides of the front panel,
A refrigerator, characterized in that the bezel located at the top and bottom of the front panel has a large width. According to claim 1,
The insulation panel is,
A first insulation panel disposed spaced apart from the front panel,
It includes a second insulation panel disposed spaced apart from the first insulation panel and forming a rear surface of the door,
A plurality of first spaces are formed between the front panel and the first insulation panel and between the first insulation panel and the second insulation panel by a plurality of gaps,
The door liner is in contact with the back of the second insulation panel. According to claim 1,
The insulation panel is formed to be smaller in size than the front panel and is located in the inner area of the front panel,
A refrigerator, characterized in that the front surfaces of the first cap decor and the second cap decor are disposed behind the front panel so as not to be exposed to the front by the bezel. According to claim 11,
The side frame is,
A first side frame forming the left side of the door and
It includes a second side frame forming a right side of the door,
A refrigerator, characterized in that the front surfaces of the first and second side frames are disposed behind the front panel so as not to be exposed to the front by the bezel. According to clause 9,
The injection port is,
It is disposed behind the bezel located on one of the upper and lower ends of the front panel.
A refrigerator characterized in that the depression is formed to face the gap and is press-fitted into the inlet cover. According to claim 1,
The detection device includes a knock detection device that detects a user's knock input applied to the front panel,
The knock detection device and
A refrigerator, characterized in that the detection device PCB for signal processing of the knock detection device is installed in the first cap deco. According to clause 5,
In the lower cap deco,
a sensing device receiving portion that is recessed in the direction of the second space and provides a third space separated from the second space;
Additionally comprising a receiving portion cover that closes the third space,
A refrigerator, wherein the sensing device PCB is connected to the sensing device through a signal line in the third space. According to claim 15,
It further includes a main control unit installed in the cabinet to control on and off of the lighting unit,
A refrigerator, wherein the sensing device PCB is installed closer to the sensing device than the main control unit. According to claim 15,
A PCB mounting portion on which the sensing device PCB is mounted is formed on the accommodating cover,
When the receiving portion cover is fastened to the first cap deco,
A refrigerator, wherein the sensing device PCB is disposed in the third space. According to claim 15,
A refrigerator, characterized in that the sensing device PCB and the sensing device are accommodated together in the third space. According to claim 1,
The side frame is,
A side portion forming the side of the door and
It is formed of a metal material including a front portion bent in front of the side portion,
A refrigerator, characterized in that the front part is coupled to the back of the front panel. According to claim 15,
A penetrating portion is formed on the front of the sensing device accommodating portion in contact with the front panel,
A refrigerator, wherein the sensing device is installed opposite to the penetration portion in the third space.