Cooking appliance

Abstract

An embodiment of a cooking appliance may comprise: a main body in which a cavity is formed; and a door which opens and closes the cavity. The door may comprise: a coated shielding glass having a coating layer for shielding electromagnetic waves formed on any one surface thereof; and a detection unit disposed in front of the coated shielding glass and configured to detect electromagnetic waves. The detection unit may be provided to detect, when a crack occurs in the coated shielding glass, electromagnetic waves generated from the main body and transmitted through the crack to the front of the coated shielding glass.

Description

Cooking appliances

[0001] The present invention relates to a cooking appliance, and more specifically, to a cooking appliance having a structure capable of effectively detecting the external emission of electromagnetic waves.

[0002] The content described in this section merely provides background information regarding the present invention and does not constitute prior art.

[0003] A cooking appliance is a home appliance that cooks food using microwaves, which are a type of electromagnetic wave, and / or heater heat. A cooking appliance may generally be equipped with a cavity, which is a space where food is placed and cooked, and a door that opens and closes the cavity.

[0004] The cooking appliance may be provided, for example, as a microwave oven that cooks contained food by radiating microwaves. Alternatively, the cooking appliance may be provided in a manner that cooks food using heater heat.

[0005] Alternatively, the cooking appliance may be equipped in a manner that cooks food by selectively using microwaves and heater heat.

[0006] When microwaves are emitted from a cooking appliance, microwaves, or electromagnetic waves, may be emitted into the cavity, which is the space inside the appliance where food is contained.

[0007] If such electromagnetic waves are emitted outside the cooking appliance, users or other home appliances may be exposed to them. Therefore, it is necessary to design a cooking appliance with a structure that can effectively suppress the emission of electromagnetic waves outside the appliance.

[0008] To suppress external emissions from the cooking appliance, for example, a mesh-type shielding structure can be formed on the glass of the door using a material that does not transmit electromagnetic waves.

[0009] However, such a shielding structure may make at least a portion of the door glass opaque. Consequently, it may be impossible or difficult for the user to observe the cooking process of the food contained in the cavity beyond the door.

[0010] With this in mind, cooking appliances equipped with electromagnetic shielding coated glass that suppresses the transmission of electromagnetic waves while maintaining the transparency of the door glass are being manufactured recently.

[0011] However, if the glass is broken in any way, electromagnetic waves may pass through the broken gap and be emitted to the outside.

[0012] If the glass is broken and cracks appear, but these cracks are so fine that the user does not notice their occurrence and continues to use the cooking appliance without taking any measures, the user and / or other electronic devices may be exposed to electromagnetic waves emitted from the cooking appliance.

[0013] Consequently, this may have a negative impact on the user's health or cause electronic devices to malfunction.

[0014] To prevent such risks, cooking appliances need to be equipped with a structure that automatically detects whether electromagnetic waves are emitted, or leaked, to the outside.

[0015] Therefore, the objective of the present invention is to provide a cooking device having a structure capable of effectively detecting external emission of electromagnetic waves.

[0016] In addition, the objective of the present invention is to provide a cooking appliance equipped with a sensing means on the door for detecting electromagnetic waves emitted from the cooking appliance to the outside.

[0017] In addition, the objective of the present invention is to provide a cooking appliance having a structure that detects the external emission of electromagnetic waves when a crack occurs in the glass of a door shielding electromagnetic waves and the electromagnetic waves pass through the crack and are emitted to the outside.

[0018] In addition, the objective of the present invention is to provide a cooking appliance having a structure in which the arrangement of the electromagnetic wave sensing means is embodied.

[0019] The objects of the present invention are not limited to those mentioned above, and other unmentioned objects and advantages of the present invention may be understood from the following description and will be more clearly understood from the embodiments of the present invention. Furthermore, it will be readily apparent that the objects and advantages of the present invention can be realized by the means and combinations thereof set forth in the claims.

[0020] One embodiment of the cooking device may include a main body in which a cavity is formed and a door for opening and closing the cavity. The door may include a shielding coated glass having a coating layer formed on one surface that shields electromagnetic waves; and a sensing unit disposed in front of the shielding coated glass and detecting electromagnetic waves.

[0021] The detection unit may be configured to detect electromagnetic waves generated from the main body, passing through the crack, and transmitted to the front of the shielding coated glass when a crack occurs in the shielding coated glass.

[0022] Therefore, it is possible to prevent users or other electronic devices from being exposed to electromagnetic waves leaking from the cooking appliance.

[0023] The door may include a frame formed of a metal material on which shielding coated glass is arranged; and a front panel having its front surface positioned in front of the frame and coupled with the frame.

[0024] The sensing unit is positioned at a location spaced forward from the shielding coated glass and can be positioned on the front panel.

[0025] The sensing unit includes a first part mounted on a first protrusion, and the front panel may include a reinforcing rib that is disposed between a first circuit board and the first part, protrudes from the rear of the front panel, and reinforces the rigidity of the front panel.

[0026] The first part can be placed at the bottom of the reinforcing rib.

[0027] The first part can be positioned in a location that overlaps the reinforcing rib in the front-rear direction.

[0028] Due to this structure, the first part can be positioned in the central part of the front panel at a location where rigidity is reinforced by a reinforcing rib.

[0029] The sensing unit includes a second part mounted on a second protrusion, and the front panel may include a protruding bar positioned on the upper side of the reinforcing rib, protruding from the rear of the front panel, and having a longitudinal direction positioned in the lateral direction of the front panel.

[0030] The protruding bar may include a first through hole formed in a portion corresponding to the first part and having a cable disposed therein that electrically connects the first circuit board and the first part; and a second through hole formed in a portion corresponding to the second part and having a cable disposed therein that electrically connects the first circuit board and the second part.

[0031] The first and second through holes allow the cable to be stably mounted on the front panel and prevent the protruding bar from interfering with the cable's placement.

[0032] In the cooking appliance according to the present invention, the sensing unit can detect electromagnetic waves emitted to the outside of the cooking appliance due to the occurrence of a crack in the shielding coated glass. When electromagnetic waves are detected, this fact can be displayed on the display unit as text, images, etc., and the user can take appropriate measures regarding the electromagnetic wave leakage, such as detecting the shielding coated glass.

[0033] Therefore, by preventing users or other electronic devices from being exposed to electromagnetic waves leaking from the cooking appliance, the user's health can be protected, and malfunction of the electronic device can be effectively prevented.

[0034] In addition, in the cooking device according to the present invention, the first part of the sensing unit may be positioned below the reinforcing rib. At this time, the first part may be positioned in a location that overlaps with the reinforcing rib in the front-rear direction. Due to this structure, the first part may be positioned in the central part of the front panel at a location where rigidity is reinforced by the reinforcing rib.

[0035] Therefore, when an impact is applied to the door, the reinforcing rib placed in the area overlapping with the first part can withstand such impact and effectively prevent the front panel from deforming. The first part is protected by the reinforcing rib, so that damage to the first part caused by the impact applied to the door can be effectively prevented.

[0036] In addition, in the cooking device according to the present invention, a first through hole and a second through hole may be formed in the protruding bar for placing a cable connecting the first circuit board and the first part or the second part, respectively. The first through hole and the second through hole allow the cable to be stably mounted on the front panel and prevent the protruding bar from interfering with the placement of the cable.

[0037] Due to this structure, the arrangement of cables connecting the first circuit board and the first part or the second part, respectively, can be facilitated, and damage to the cables by the protruding bar can be effectively suppressed.

[0038] In addition to the effects described above, the specific effects of the present invention are described together with the specific details for implementing the invention below.

[0039] FIG. 1 is an exploded view showing some parts of a cooking appliance according to one embodiment.

[0040] FIG. 2 is a cross-sectional view of a cooking appliance according to one embodiment.

[0041] FIG. 3 is a perspective view showing the door of a cooking appliance according to one embodiment.

[0042] FIG. 4 is an exploded view showing the door of a cooking appliance according to one embodiment.

[0043] FIG. 5 is a side cross-sectional view of the door of a cooking appliance according to one embodiment.

[0044] Figure 6 is an enlarged view of a part of Figure 5.

[0045] FIG. 7 is a rear view of the door of a cooking appliance according to one embodiment with some parts omitted.

[0046] Figure 8 is a drawing in which some parts of Figure 7 have been omitted.

[0047] FIG. 9 is a drawing for explaining a sensing unit according to an embodiment different from FIG. 8.

[0048] Figure 10 is an enlarged view of part 10 of Figure 9.

[0049] Figure 11 is an enlarged view of part 11 of Figure 9.

[0050] The aforementioned objectives, features, and advantages are described in detail below with reference to the attached drawings, thereby enabling those skilled in the art to easily implement the technical concept of the present invention. In describing the present invention, detailed descriptions of known technologies related to the present invention are omitted if it is determined that such descriptions would unnecessarily obscure the essence of the invention. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. In the drawings, the same reference numerals are used to indicate identical or similar components.

[0051] Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another, and unless specifically stated otherwise, the first component may also be the second component.

[0052] Throughout the specification, unless specifically stated otherwise, each component may be singular or plural.

[0053] Singular expressions used in this specification include plural expressions unless the context clearly indicates otherwise. In this application, terms such as "composed of" or "comprising" should not be interpreted as necessarily including all of the various components or steps described in the specification, and should be interpreted as meaning that some of the components or steps may be omitted or additional components or steps may be included.

[0054] Throughout the specification, "A and / or B" means A, B, or A and B unless specifically stated otherwise, and "C to D" means C or more and D or less unless specifically stated otherwise.

[0055] Throughout the specification, "up," "down," or "up-down direction" refers to the top, bottom, or up-down direction of the cooking appliance when it is installed for normal daily use. "Bilateral direction" or "lateral direction" refers to a direction orthogonal to the up-down direction. Bilateral direction or lateral direction may include "left-right direction" and "front-back direction," where the left-right direction and the front-back direction are orthogonal to each other.

[0056] FIG. 1 is an exploded view showing some parts of a cooking appliance according to one embodiment. FIG. 2 is a cross-sectional view of a cooking appliance according to one embodiment.

[0057] The cooking device of the embodiment can cook food using microwaves, or can cook food using microwaves and heater heat selectively. Accordingly, the cooking device of the embodiment can generate microwaves, that is, electromagnetic waves, in the cavity (21).

[0058] The cooking device of the embodiment may include a main body (20), a door (10), a bottom plate (50), a rear plate (61), and a machine room (62).

[0059] A cavity (21), which is a space for accommodating food, may be formed in the main body (20). The main body (20) may include the cavity (21) and a housing (22) that forms the cavity (21). The housing (22) may cover the cavity (21).

[0060] The door (10) can open and close the cavity (21). The door (10) is positioned at the front of the cavity (21) and is rotatably mounted on the main body (20) to open and close the cavity (21).

[0061] The bottom plate (50) can be combined with the housing (22) to form a cavity (21) and form the bottom of the cooking appliance. The rear plate (61) can be combined with the rear of the housing (22) to form a cavity (21).

[0062] The machine room (62) can be combined with the rear plate (61) at the rear of the rear plate (61). A space is formed inside the machine room (62), and various parts and devices for the operation of the cooking device can be arranged in this space.

[0063] The door (10) may include a shielding coated glass (100) and a detection unit (200). A coating layer that shields electromagnetic waves may be formed on one side of the shielding coated glass (100). The coating layer may be provided transparently.

[0064] Accordingly, the shielding coated glass (100) is entirely transparent, and the user can observe the cooking of food contained in the cavity (21) through the shielding coated glass (100). At this time, since the shielding coated glass (100) shields electromagnetic waves, the user can observe the cooking process of the food without being exposed to electromagnetic waves.

[0065] Meanwhile, since all the glass provided in the door (10) of the embodiment is formed to be transparent, the user can see the cavity (21) from the outside through these glasss.

[0066] The shielding coating layer may be provided in a laminated structure in which a TCO (Transparent Conductive Oxide) layer and a metal layer are alternately stacked, for example. In this case, since the TCO layer is transparent and the metal layer is formed to be sufficiently thin enough to transmit light, the shielding coating layer can be transparent as a whole.

[0067] The TCO layer can be made of ITO (In2O3, SnO2), IZO (In2O3, ZnO), FTO (F-doped SnO2), hard Low-ε material, soft Low-ε material, etc. Preferably, the TCO layer may include one or more of ITO (In2O3, SnO2), IZO (In2O3, ZnO), and FTO (F-doped SnO2).

[0068] It is desirable for the metal layer to include a metal with low resistivity. To this end, the metal layer may include one or more of Ag, Cu, and Au.

[0069] The detection unit (200) is positioned in front of the shielding coated glass (100) and can detect electromagnetic waves. A detailed description of the detection unit (200) is described below.

[0070] FIG. 3 is a perspective view showing the door (10) of a cooking appliance according to one embodiment. FIG. 4 is an exploded view showing the door (10) of a cooking appliance according to one embodiment.

[0071] The door (10) may include a frame (300) and a front panel (400). The frame (300) may be formed of a metal material and may have a shielding coated glass (100) placed on it. The frame (300) may be provided to be rotatable relative to the main body (20). As the frame (300) rotates, the door (10) rotates to open and close the cavity (21) of the microwave oven.

[0072] For example, the frame (300) can be rotatably coupled to a front plate (40) positioned between the door (10) and the main body (20).

[0073] The front panel (400) is positioned at the front of the frame (300) and can be combined with the frame (300). The front panel (400) may have a hollow portion (401) and be provided in a shape having a predetermined width in the front-rear direction of the door (10).

[0074] Since the front panel (400) has the aforementioned structure, it can have an internal space, and various parts can be installed in the internal space. The width of the door (10) in the front and rear directions can be determined almost entirely by the front panel (400).

[0075] The door (10) may include a choke member (610), an intermediate glass (620), a front glass (630), and a front cover (640).

[0076] The choke member (610) is coupled to the frame (300), is formed of a metal material, and can block the external emission of electromagnetic waves generated from the main body (20). The choke member (610) is generally provided in a rectangular shape with a hollow interior and can be provided to surround the edge portion of the frame (300).

[0077] The frame (300) may include a sink portion (310) formed at the edge of the frame (300) to trap and extinguish electromagnetic waves, and provided such that at least a portion is covered by a choke member (610).

[0078] The sink portion (310) may be provided such that a plurality of protrusions and a plurality of recesses are arranged alternately along the edge of the frame (300). At this time, the protrusions and recesses may be covered by a chalk member (610).

[0079] Electromagnetic waves propagating from the cavity (21) can be collected in the sink portion (310), which has a structure in which protrusions and depressions are arranged alternately, and the electromagnetic waves can be extinguished in the sink portion (310) by blocking their propagation to the outside by the choke member (610).

[0080] The intermediate glass (620) is coupled to the frame (300) and can be positioned in front of the shielding coated glass (100) so as to be spaced apart from the shielding coated glass (100). The intermediate glass (620) may not be equipped with a means for shielding electromagnetic waves.

[0081] The front glass (630) can be attached to the front of the front panel (400). The front glass (630) can be positioned in front of the intermediate glass (620) so as to be spaced apart from the front glass (630).

[0082] The front cover (640) can be positioned in front of the front glass (630). The front cover (640) can be placed in front of the front glass (630) and can form the front of the door (10). The front cover (640) can serve as a design means to cover a part of the front glass (630) so that the front of the door (10) looks neat.

[0083] A cooking device of one embodiment may include a front plate (40) that is positioned between the main body (20) and the door (10) and is coupled to the front of the main body (20). The front plate (40) may be securely coupled to the main body (20) and may not rotate.

[0084] Accordingly, the door (10) may be configured to rotate relative to the front plate (40). Accordingly, the hinge joint (660), which is the connecting part for rotation in the door (10), and the latch (650), which is the locking device, may be configured to be connected to the front plate (40).

[0085] Referring to FIG. 3, the door (10) may include a handle (11), a knob (31), and a display unit (32). The handle (11) may be formed to protrude from the front of the door (10). A user can open and close the cavity (21) of the main body (20) by holding the handle (11) and rotating the door (10). The handle (11) may be provided in a shape that is convenient for the user to hold the handle (11) and rotate the door (10).

[0086] The knob (31) can be mounted on the door (10) so as to be rotatable. The user can input commands regarding the operation of the cooking appliance using the knob (31). The user can input commands to the cooking appliance, such as the start of cooking, cooking time, and other necessary commands, by rotating the knob (31).

[0087] Various information related to the operation of the cooking appliance may be displayed in the display unit (32) as text and / or images. In an embodiment, when the detection unit (200) detects the leakage of electromagnetic waves, information that electromagnetic waves have been leaked may be displayed on the display unit (32).

[0088] FIG. 5 is a side cross-sectional view of the door (10) of a cooking appliance according to one embodiment. FIG. 6 is an enlarged view of a part of FIG. 5.

[0089] Referring to FIGS. 5 and 6, electromagnetic waves generated in the cavity (21) can be blocked from being emitted to the front of the cooking appliance by the door (10). The door (10), which is positioned in front of the cavity (21), is equipped with a metal frame (300), a choke member (610), and a shielding coated glass (100), and these can block electromagnetic waves present in the cavity (21) from being emitted to the outside to the front of the cooking appliance.

[0090] Meanwhile, the shielding coated glass (100) may be damaged due to external impact, high heat, etc., and cracks may occur. If the shielding coated glass (100) is damaged, electromagnetic waves may pass through the gaps created by the cracks and be emitted to the outside.

[0091] If the glass is broken and cracks appear, but these cracks are so fine that the user does not notice their occurrence and continues to use the cooking appliance without taking any measures, the user and / or other electronic devices may be exposed to electromagnetic waves emitted from the cooking appliance.

[0092] Consequently, this may have a negative impact on the user's health or cause electronic devices to malfunction.

[0093] To prevent such risks, cooking appliances need to be equipped with a structure that automatically detects whether electromagnetic waves are emitted, or leaked, to the outside.

[0094] In an embodiment, a detection unit (200) for detecting electromagnetic waves may be provided when a crack occurs in the shielding coated glass (100) and electromagnetic waves are emitted through the crack.

[0095] The detection unit (200) may be configured to detect electromagnetic waves generated from the main body (20) and transmitted to the front of the shielding coated glass (100) through the crack when a crack occurs in the shielding coated glass (100).

[0096] In an embodiment, the detection unit (200) can detect electromagnetic waves emitted to the outside of the cooking appliance due to cracks occurring in the shielding coated glass (100). When electromagnetic waves are detected, this fact can be displayed on the display unit (32) as text, images, etc., and the user can take appropriate measures regarding electromagnetic wave leakage, such as detecting the shielding coated glass (100).

[0097] Therefore, by preventing users or other electronic devices from being exposed to electromagnetic waves leaking from the cooking appliance, the user's health can be protected, and malfunction of the electronic device can be effectively prevented.

[0098] The sensing unit (200) is positioned at a location spaced forward from the shielding coated glass (100) and can be positioned on the front panel (400).

[0099] A space capable of accommodating various parts is formed in the front panel (400), and this space may be formed in front of the frame (300) including the sink part (310) and the choke member (610). This space may be formed by a side wall (440), an upper wall, and a lower wall that are formed by bending at the edge of the front panel (400).

[0100] Therefore, since electromagnetic waves from the cavity (21) toward the frame (300) and the choke member (610) are blocked by the frame (300) and the choke member (610), the detection unit (200) can effectively detect electromagnetic waves passing through the cracks of the shielding coated glass (100).

[0101] Additionally, the detection unit (200) may be positioned at a location spaced forward from the shielding coated glass (100). Due to this structure, in a normal state where there are no cracks in the shielding coated glass (100), electromagnetic waves are blocked from leaking by the shielding coated glass (100), so the detection unit (200) does not detect electromagnetic waves, and can only detect electromagnetic waves when the shielding coated glass (100) is damaged and cracks occur.

[0102] Therefore, the detection unit (200) can very effectively detect leakage of electromagnetic waves caused by breakage of the shielding coated glass (100).

[0103] The sensing unit (200) can be provided in various forms as long as it is capable of detecting electromagnetic waves. The sensing unit (200) can be provided as, for example, at least one of a Hall sensor, a Magneto Impedance (MI) sensor, or a Magneto Resistance (MR) sensor.

[0104] In addition, the sensing part (200) in the drawing is provided in a cuboid shape, but is not limited thereto and can be provided in a cylindrical, polyhedral, or other various shapes in other embodiments.

[0105] The front panel (400) may include a hollow portion (401) formed in a shape corresponding to the shielding coated glass (100), on which the shielding coated glass (100) is disposed. The user can observe the inside of the cavity (21) through the hollow portion (401).

[0106] The sensing part (200) may be positioned at least one of a portion spaced upward from the hollow portion (401) or a portion spaced from the side edge.

[0107] The front panel (400) is formed to be bent backward from the edge of the hollow portion (401) and may include a protrusion (410) forming the edge of the hollow portion (401).

[0108] The protrusion (410) protrudes from the end of the hollow portion (401) to form an internal space of the front panel (400), and since the rigidity of the front panel (400) is weakened due to the hollow portion (401), the rigidity of the front panel (400) can be increased so that the front panel (400) is not easily deformed by impact.

[0109] The sensing unit (200) may be provided to be mounted on one side of the protrusion (410). The sensing unit (200) needs to be placed in the space of the front panel (400) and stably mounted on the front panel (400). Therefore, since the protrusion (410) can support the sensing unit (200), the sensing unit (200) can be stably positioned by being mounted on one side of the protrusion (410).

[0110] The sensing part (200) may be connected to the protrusion (410) by a connecting mechanism such as an adhesive or a screw, for example, and may be supported by the protrusion (410) by contacting one surface of the protrusion (410).

[0111] FIG. 7 is a rear view of the door (10) of a cooking appliance according to one embodiment with some parts omitted. FIG. 8 is a drawing of FIG. 7 with some parts omitted. FIG. 9 is a drawing for explaining a sensing unit (200) according to an embodiment different from FIG. 8.

[0112] First, the hinge joint (660) and latch (650), which are components necessary for the rotation of the door (10), will be described. The hinge joint (660) can be connected to the front panel (400) at one end and connected to the front plate (40) at the other end. The hinge joint (660) can be rotatably connected to at least one of the front panel (400) or the front plate (40).

[0113] The hinge joint (660) supports the rotation of the door (10), and thus, the door (10) can open or close the cavity (21) while rotating relative to the main body (20). Although the hinge joint (660) is provided as one in FIG. 7, in other embodiments, two or more may be provided in a plurality arranged at positions spaced apart from each other.

[0114] One end of the latch (650) may be connected to the front panel (400), and the other end may be detachably connected to the front plate (40). The latch (650) may be formed to protrude from the front panel (400).

[0115] The latch (650) may be formed in a structure that engages with a groove formed in the front plate (40) that is coupled to the main body (20). When the door (10) is closed, the latch (650) can stably maintain the closed state of the door (10). To maintain the stable closed state of the door (10), it may be appropriate to provide a plurality of latches (650) positioned at spaced-apart locations.

[0116] The protrusion (410) may include a first protrusion (411), a second protrusion (412), and a third protrusion (413). The first protrusion (411) may be arranged laterally in the longitudinal direction and may form the upper edge of the hollow portion (401).

[0117] The second protrusion (412) is arranged vertically along its length and can form the side edge of the hollow portion (401). The second protrusion (412) is provided as a pair, and each second protrusion (412) can form both edges of the hollow portion (401).

[0118] The third protrusion (413) is positioned laterally along the longitudinal direction and can form the lower edge of the hollow portion (401).

[0119] The detection unit (200) may be mounted on at least one surface of the first protrusion (411), the second protrusion (412), or the third protrusion (413). Since the shielding coated glass (100) is positioned in front of the first protrusion (411), the second protrusion (412), and the third protrusion (413), the detection unit (200) may be mounted on one surface of the first protrusion (411), the second protrusion (412), or the third protrusion (413) and positioned in front of the shielding coated glass (100).

[0120] Meanwhile, in the first protrusion (411), a sensing unit (200) may be mounted on the upper surface of the first protrusion (411), and due to this structure, the sensing unit (200) may not be visible to the user, so that the user's field of vision may not be obstructed when the user looks at the cavity (21).

[0121] Likewise, in the second protrusion (412), a sensing part (200) may be mounted on the inner surface of the second protrusion (412) which does not have a hollow part (401), and accordingly, the sensing part (200) may not obstruct the user's view when the user looks at the cavity (21).

[0122] The second protrusions (412) may be provided as a pair spaced apart from each other. Accordingly, the sensing unit (200) may be provided to be mounted on one side of at least one of the pair of second protrusions (412).

[0123] Additionally, a detection unit (200) may be mounted on the upper surface of the third protrusion (413), and due to this structure, the detection unit (200) may not be visible to the user, so that the user's field of vision may not be obstructed when the user looks at the cavity (21).

[0124] In FIG. 9, the sensing part (200) is positioned on one side of one second protrusion (412), but in other embodiments, the sensing part (200) may be positioned on one side of another second protrusion (412) or on both of a pair of second protrusions (412).

[0125] For the operation of the cooking device, the cooking device may include a first circuit board (510) and a second circuit board (520).

[0126] The first circuit board (510) is positioned on the upper side of the front panel (400), positioned at a location spaced upward from the sensing unit (200), and can be electrically connected to the sensing unit (200).

[0127] Additionally, the first circuit board (510) can be electrically connected to the display unit (32). The display unit (32) and the first circuit board (510) can be formed as a single module so as to be connected to each other, for example, without using long, extended wiring.

[0128] Due to this structure, the first circuit board (510) and the display unit (32) can be provided to overlap each other in the front-rear direction of the cooking device. Accordingly, the portion of the front panel (400) where the first circuit board (510) is placed can be provided in an open state.

[0129] In addition, so that the display part (32) is not covered by the front cover (640), a hole with a shape corresponding to a position corresponding to the display part may be formed in the front cover (640).

[0130] The first circuit board (510) can control the operation of the display unit (32). That is, the first circuit board (510) can control the display unit (32) so that information regarding the cooking of the cooking device and food is displayed on the display unit (32).

[0131] In particular, in relation to the embodiment, when the detection unit (200) detects an electromagnetic wave, the first circuit board (510) electrically connected to the detection unit (200) can transmit a control command to the display unit (32) so that the display unit (32) displays the electromagnetic wave detection information.

[0132] The second circuit board (520) is positioned on the upper side of the front panel (400), is spaced laterally from the first circuit board (510), and can be electrically connected to a knob (31) that receives user input.

[0133] As with the first circuit board (510), the knob (31) and the second circuit board (520) can be formed as a single module so as to be connected to each other without using long, extended wiring. At this time, the knob (31) can be coupled to the first circuit board (510) so as to be rotatable with respect to the first circuit board (510).

[0134] Due to this structure, the second circuit board (520) and the knob (31) can be provided to overlap each other in the front-rear direction of the cooking device. Accordingly, the portion of the front panel (400) where the second circuit board (520) is placed can be provided in an open state.

[0135] Additionally, since the knob (31) is positioned in front of the front cover (640), a hole with a shape corresponding to a position corresponding to the knob (31) may be formed in the front cover (640) so that the knob (31) passes through the front cover (640) and is coupled with the second circuit board (520).

[0136] The second circuit board (520) can receive user operation commands through the knob (31). The user rotates the knob (31) to input cooking time, cooking temperature, and other necessary commands to the second circuit board (520), and the second circuit board (520) can process the commands itself or transmit the input commands to another control device.

[0137] The sensing unit (200) may include a first part (210), a second part (220), and a third part (230). The first part (210) may be mounted on a first protrusion (411). The second part (220) may be mounted on a second protrusion (412). The third part (230) may be mounted on a third protrusion (413).

[0138] Unlike the second part (220), the first part (210) can be positioned in the center of the front panel (400). The third part (230) can be positioned in the center of the front panel (400) and below the first part (210).

[0139] In the embodiment, the first part (210), the second part (220), and the third part are not all necessarily required to be provided, and at least one of them may be provided. The number of sensing units (200) may be arbitrarily selected according to design conditions.

[0140] The first part (210), the second part (220), and the third part (230) can be placed on the upper side, the lower side, and both the left and right sides of the shielding coated glass (100), respectively, depending on the design conditions of the cooking device and the detection conditions of the detection unit (200).

[0141] The second part (220) can be formed at the edge of the front panel (400) and positioned adjacent to a side wall (440) that is provided with a relatively large width in the front-rear direction of the cooking device.

[0142] The side wall (440) can increase the rigidity of the front panel (400). Therefore, even if some impact is applied to the front panel (400), the area adjacent to the side wall (440) is not deformed or is deformed only slightly due to the side wall (440), so the second part (220) may not easily be damaged by impact.

[0143] In contrast, the central part of the front panel (400), unlike the edge of the front panel (400), can easily be deformed by impact, and the first part (210) placed in the central part of the front panel (400) can be relatively easily damaged by impact.

[0144] Therefore, a structure is required that can prevent the first part (210) from being damaged by an impact applied to the door (10).

[0145] To this end, in an embodiment, the front panel (400) may include a reinforcing rib (420) that is positioned between the first circuit board (510) and the first part (210), protrudes from the rear of the front panel (400), and reinforces the rigidity of the front panel (400).

[0146] The reinforcing rib (420) may be provided on a plurality of protrusions (410) that protrude from each other in the vertical direction of the front panel (400), and generally the entire length direction may be arranged in the lateral direction of the front panel (400).

[0147] Reinforcing ribs (420) can be formed on the front panel (400) across the lateral direction of the front panel (400). The reinforcing ribs (420) can increase the rigidity of the central part of the front panel (400), which can be easily deformed by impact in particular.

[0148] Since deformation caused by impact of the front panel (400) can be suppressed by the reinforcing rib (420), the reinforcing rib (420) can prevent the first part (210) from being damaged by impact applied to the door (10).

[0149] Additionally, the first part (210) may be positioned below the reinforcing rib (420). At this time, the first part (210) may be positioned in a location that overlaps the reinforcing rib (420) in the front-rear direction. Due to this structure, the first part (210) may be positioned in a location where the rigidity is reinforced by the reinforcing rib (420) in the central part of the front panel (400).

[0150] Accordingly, when an impact is applied to the door (10), the reinforcing rib (420) placed in the area overlapping with the first part (210) can withstand such impact and effectively prevent the front panel (400) from deforming. The first part (210) is protected by the reinforcing rib (420), so that damage to the first part (210) caused by an impact applied to the door (10) can be effectively prevented.

[0151] In the embodiment, the sensing part (200) can be combined with a mating part in various ways, such as double-sided tape, bond, fusion, screw connection, and insertion.

[0152] The sensing part may be installed to contact the rear of the front panel (400) or the rear of the reinforcing rib (42), in addition to the first protrusion (411), the second protrusion (412), or the third protrusion (413), for the structural stability of the cooking device.

[0153] Meanwhile, the cooking device may include a first protrusion (411), a second protrusion (412), a third protrusion (413), and a sensing member coupling rib protruding from the rear surface of the front panel (400) or the rear surface of the reinforcing rib (42). The sensing member coupling rib may be provided in a structure that surrounds the sensing member so that it is press-fitted.

[0154] The sensing part coupling rib can serve to strengthen the connection between the sensing part (200) and the coupling surface where the sensing part (200) is coupled (meaning the surface where the sensing part is coupled to any part of the cooking device).

[0155] The front panel (400) may include a protruding bar (430) that is positioned above the reinforcing rib (420), protrudes from the rear of the front panel (400), and is positioned along the side of the front panel (400).

[0156] Both ends of the protruding bar (430) may extend to the side walls (440) that are bent in the front-rear direction from the edges of both sides of the front panel (400). The protruding bar (430) can increase the rigidity of the front panel (400) and prevent the front panel (400) from being deformed by impact.

[0157] Additionally, the protruding bar (430) can support the first circuit board (510) and the second circuit board (520) placed on its upper surface, thereby allowing the first circuit board (510) and the second circuit board (520) to be stably mounted on the front panel (400).

[0158] In the embodiment, the first part (210) and the second part (220) of the sensing unit (200) both need to be electrically connected to the first circuit board (510). By electrically connecting the sensing unit (200), the first circuit board (510), and the display unit (32), when the sensing unit (200) detects an electromagnetic wave, the first circuit board (510) receives information from the sensing unit (200) that an electromagnetic wave has been detected and can transmit a command to the display unit (32) to display the electromagnetic wave detection.

[0159] At this time, the first part (210) and the second part (220) and the first circuit board (510) can be electrically connected by a cable (CA). For such connection by cable (CA), there must be no obstacles for the cable (CA) connection between the first part (210) and the second part (220) and the first circuit board (510).

[0160] As described above, in the embodiment, a reinforcing rib (420) and a protruding bar (430) may be arranged between the first part (210) and the second part (220) and the first circuit board (510) in the vertical direction.

[0161] Since the reinforcing rib (420) has a relatively small protruding width, the reinforcing rib (420) may not become an obstacle to the cable (CA) for connecting the first part (210) and the second part (220) and the first circuit board (510).

[0162] However, the protruding bar (430) has a relatively large protruding width compared to the reinforcing rib (420), and this width can be nearly equal to the width of the front panel (400) in the front-to-back direction of the cooking device. Therefore, the protruding bar (430) can be an obstacle to the placement of the cable (CA) for connecting the first part (210) and the second part (220) with the first circuit board (510).

[0163] Accordingly, in the embodiment, a through hole may be formed in the reinforcing rib (420) so that a cable (CA) can be placed therein. This will be explained in detail below with reference to the drawings.

[0164] FIG. 10 is an enlarged view of part 10 of FIG. 9. FIG. 11 is an enlarged view of part 11 of FIG. 9. In an embodiment, the protruding bar (430) may include a first through hole (431) and a second through hole (432).

[0165] The first through hole (431) is formed in a portion corresponding to the first part (210), and a cable (CA) that electrically connects the first circuit board (510) and the first part (210) may be disposed therein. The second through hole (432) is formed in a portion corresponding to the second part (220), and a cable (CA) that electrically connects the first circuit board (510) and the second part (220) may be disposed therein.

[0166] The first through hole (431) can be formed in the central part of the protruding bar (430) and the front panel (400), and the second through hole (432) can be formed in the edge part of the protruding bar (430) and the front panel (400).

[0167] The first through hole (431) and the second through hole (432) may be provided in the form of a recessed groove with a part of the edge open, for example, or in the form of a hole with the edge completely closed. For example, in FIGS. 10 and FIGS. 11, the first through hole (431) and the second through hole (432) are formed in the form of a recessed groove, but in other embodiments, they may be provided in the form of a hole.

[0168] Referring to FIG. 10, the first through hole (431) can be formed in a position that overlaps the first circuit board (510) and the first part (210) in the vertical direction on the protruding bar (430). Accordingly, the cable (CA) electrically connecting the first circuit board (510) and the first part (210) can be placed on the front panel (400) without any parts that are bent in a straight line.

[0169] Referring to FIG. 11, the second through hole (432) may be formed in a position that overlaps with the second part (220) in the vertical direction. However, since the second part (220) and the first circuit board (510) are arranged so as not to overlap in the vertical direction, the cable (CA) that electrically connects the first circuit board (510) and the second part (220) may be arranged on the front panel (400) so as to be bent at least once.

[0170] A cable (CA) connecting the first circuit board (510) and the second part (220) can be extended upward from the second part (220), passed through the second through hole (432), then bent at the upper side of the protruding bar (430) and extended sideways to the front panel (400) to be connected to the first circuit board (510).

[0171] In an embodiment, a first through hole (431) and a second through hole (432) may be formed in the protruding bar (430) to allow a cable (CA) connecting the first circuit board (510) and the first part (210) or the second part (220), respectively, to be placed therein. The first through hole (431) and the second through hole (432) allow the cable (CA) to be stably mounted on the front panel (400) and prevent the protruding bar (430) from interfering with the placement of the cable (CA).

[0172] Due to this structure, the arrangement of the cable (CA) connecting the first circuit board (510) and the first part (210) or the second part (220) can be facilitated, and damage to the cable (CA) by the protruding bar (430) can be effectively suppressed.

[0173] Meanwhile, the third part (230) and the first circuit board (510) can also be electrically connected to each other by a cable (CA). The cable (CA) is drawn out from the third part (230) along the length of the third protrusion (413), bent at the position where it meets the second protrusion (412), and continues to be drawn out in an upward direction, passing through the second through hole (432) to be connected to the first circuit board (510).

[0174] Although the present invention has been described above with reference to the illustrated drawings, the present invention is not limited by the embodiments and drawings disclosed in this specification, and it is obvious that various modifications can be made by a person skilled in the art within the scope of the technical concept of the present invention. Furthermore, even if the effects of the configuration according to the present invention were not explicitly described while explaining the embodiments of the present invention above, it is natural to acknowledge that the effects predictable by said configuration should also be recognized.

Claims

1. A cooking appliance comprising a main body in which a cavity is formed and a door for opening and closing the cavity, The above door is, Shielding coated glass having a coating layer formed on one side to shield electromagnetic waves; and A sensing unit positioned in front of the shielding coated glass and detecting electromagnetic waves including, Cooking appliances.

2. In Paragraph 1, The above-mentioned sensing unit is, When a crack occurs in the shielding coated glass, a device is configured to detect electromagnetic waves generated from the main body, passing through the crack and being transmitted to the front of the shielding coated glass. Cooking appliances.

3. In Paragraph 1, The above door is, A frame formed of a metal material on which the above-mentioned shielding coated glass is disposed; and A front panel having its front surface positioned at the front of the frame and coupled with the frame. Includes, The above-mentioned sensing unit is positioned at a location spaced forward from the shielding coated glass and is positioned on the front panel. Cooking appliances.

4. In Paragraph 3, The above-described front panel includes a hollow portion formed in a shape corresponding to the shielding coated glass, wherein the shielding coated glass is disposed therein. The above-mentioned sensing unit is, A portion disposed in at least one of a portion spaced upward from the above-mentioned hollow portion or a portion spaced from the side edge, Cooking appliances.

5. In Paragraph 4, The above front panel is, It is formed to be bent backward from the edge of the hollow portion and includes a protrusion forming the edge of the hollow portion, The above-mentioned sensing part is configured to be mounted on one surface of the above-mentioned protrusion, Cooking appliances.

6. In Paragraph 5, The above protrusion is, A first protrusion that is arranged laterally in the longitudinal direction and forms the upper edge of the hollow portion; and A second protrusion that is arranged in the vertical direction along the length and forms the edge of the side portion of the hollow portion. including, Cooking appliances.

7. In Paragraph 6, The above-mentioned sensing unit is, A device configured to be mounted on at least one surface of the first protrusion or the second protrusion. Cooking appliances.

8. In Paragraph 7, The above second protrusions are provided as a pair spaced apart from each other, The above-mentioned sensing part is provided to be mounted on one surface of at least one of the pair of the second protrusions, Cooking appliances.

9. In Paragraph 6, A first circuit board comprising a first circuit board positioned above the front panel, positioned above and spaced apart from the sensing part, and electrically connected to the sensing part. Cooking appliances.

10. In Paragraph 9, The above-mentioned sensing unit is, It includes a first part mounted on the first protrusion, and The above front panel is, It includes a reinforcing rib disposed between the first circuit board and the first part, protruding from the rear surface of the front panel, and reinforcing the rigidity of the front panel. The above first part is, A portion disposed at the lower part of the above reinforcing rib, Cooking appliances.

11. In Paragraph 10, The above first part is positioned in a location that overlaps the reinforcing rib in the front-rear direction, Cooking appliances.

12. In Paragraph 10, The above-mentioned sensing unit is, It includes a second part mounted on the second protrusion, and The above front panel is, It includes a protruding bar positioned on the upper side of the reinforcing rib, protruding from the rear surface of the front panel, and having a longitudinal direction positioned in the lateral direction of the front panel. The above protruding bar is, A first through hole formed in a portion corresponding to the first part, wherein a cable electrically connecting the first circuit board and the first part is disposed therein; and A second through hole formed in a portion corresponding to the second part, wherein a cable electrically connecting the first circuit board and the second part is disposed therein. including, Cooking appliances.

13. In Paragraph 9, A second circuit board disposed on the upper side of the above-mentioned front panel, disposed laterally spaced apart from the first circuit board, and electrically connected to a knob that receives user input, Cooking appliances.

14. In Paragraph 3, The above door is, A choke member coupled to the above frame, formed of a metal material, and blocking the external emission of electromagnetic waves generated from the main body; An intermediate glass coupled to the above frame and positioned in front of the shielding coated glass so as to be spaced apart from the shielding coated glass; A front glass coupled to the front surface of the above-mentioned front panel; and A front cover positioned in front of the aforementioned front glass including, Cooking appliances.

15. In Paragraph 14, A front plate disposed between the main body and the door and coupled to the front of the main body, Cooking appliances.

16. In Paragraph 14, The above frame is, A sink portion formed at the edge to trap and extinguish electromagnetic waves, and configured such that at least a portion is covered by the choke member. Cooking appliances.

17. In Paragraph 1, The above-mentioned sensing unit is, Equipped with at least one of a Hall sensor, an MI (Magneto Impedance) sensor, or an MR (Magneto Resistance) sensor, Cooking appliances.

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