Cooking apparatus

Abstract

This cooking apparatus comprises a main body having a cooking chamber. Also, the cooking apparatus comprises a door that is coupled to the main body to cover part of the cooking chamber and comprises an opening. The cooking apparatus comprises a heating device which can be detachably attached to the door so as to open / close the opening, and the heating device comprises a heating portion which is electrically connected to the door and heats the cooking chamber when attaching to the door. Also, the heating device comprises a battery provided to supply power to the heating portion when detaching from the door. In addition, in order to detachably couple the heating device to the door, the heating device further comprises a coupling device for detachably attaching the heating device to the door.

Description

Cooking appliances

[0001] The present disclosure relates to a cooking appliance including a heating device in a door.

[0002] A cooking appliance is a device used to heat and cook food or other food items. Specifically, it can perform various cooking-related functions, such as heating, defrosting, drying, and sterilizing the food.

[0003] Examples of such cooking appliances include ovens such as gas ovens or electric ovens, microwave ovens (hereinafter referred to as microwave ovens), gas ranges, electric ranges, gas grills or electric grills.

[0004] An oven is a device that cooks food by directly transmitting heat to the food or heating the inside of the cooking chamber through a heating source such as a heater, and a microwave oven is a device that cooks food by using high frequency as a heating source to disturb the arrangement of the food's molecules and thereby generating intermolecular frictional heat.

[0005] Cooking appliances include a door. The door opens and closes the cooking chamber. The door includes a window that allows a view into the cooking chamber, but heat energy inside the cooking chamber tends to be lost to the outside through the window.

[0006] One aspect of the present disclosure provides a cooking appliance that prevents heat energy in a cooking chamber from being lost through a door.

[0007] One aspect of the present disclosure provides a cooking appliance configured to apply heat to a front portion of a cooking chamber.

[0008] One aspect of the present disclosure includes a cooking appliance wherein a door is provided to include a heating device.

[0009] One aspect of the present disclosure includes a cooking appliance in which a heating device provided in a door is provided to be separated.

[0010] One aspect of the present disclosure includes a cooking appliance in which a separate heating device is arranged to independently apply heat to food.

[0011] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0012] A cooking appliance according to the invention comprises a main body having a cooking chamber. The cooking appliance comprises a door coupled to the main body and configured to cover a portion of the cooking chamber, the door including an opening. The cooking appliance comprises a heating device detachably mountable to the door to open and close the opening. The heating device, when mounted on the door, is electrically connected to the door and includes a heating unit for heating the cooking chamber. The heating device comprises a battery configured to supply power to the heating unit when detached from the door.

[0013] A cooking appliance according to the invention comprises a main body having a cooking chamber. The cooking appliance comprises a door coupled to the main body and configured to cover a portion of the cooking chamber, the door including an opening. The cooking appliance comprises a heating device detachably mountable to the door to open and close the opening. The heating device comprises a first plate including a first heating unit. The heating device comprises a second plate rotatable to cover the first plate and including a second heating unit. The heating device comprises a battery configured to supply power to the first heating unit and the second heating unit when separated from the door. The heating device is configured such that, when the heating device is mounted on the door, the first heating unit and the second heating unit are electrically connected to the door and heat the cooking chamber.

[0014] A cooking appliance according to the present invention comprises a main body having a cooking chamber. The cooking appliance comprises a door coupled to the main body and including an opening. The cooking appliance comprises a heating device detachably mountable to the door to open and close the opening.

[0015] FIG. 1 is a drawing illustrating a cooking appliance according to one embodiment.

[0016] Figure 2 is a side cross-sectional view of the cooking appliance of Figure 1.

[0017] FIG. 3 is a drawing showing a heating device separated from a cooking appliance according to one embodiment.

[0018] Figure 4 is an exploded view of a heating device according to one embodiment.

[0019] Figure 5 is a drawing of the drawing of Figure 4 taken from the rear at a different angle.

[0020] Figure 6 is a drawing illustrating the interior of a heating device according to one embodiment.

[0021] Figure 7 is a drawing showing an enlarged view of area A of Figure 6.

[0022] Figure 8 is a drawing showing the appearance of the coupling hook being separated from the coupling groove by pressing the trigger in Figure 6.

[0023] Figure 9 is a rear perspective view of a heating device according to one embodiment.

[0024] Fig. 10 is a drawing expressing that a part of a heating device according to one embodiment is formed transparently.

[0025] FIG. 11 is a drawing expressing that a heating device according to one embodiment can independently heat a heated object even when separated from a door.

[0026] Fig. 12 is a drawing illustrating a heating device according to one embodiment.

[0027] Fig. 13 is a side cross-sectional view of a cooking appliance with the heating device of Fig. 12 attached to the door.

[0028] Fig. 14 is a drawing showing the first plate of the heating device of Fig. 12 rotating and moving away from the second plate.

[0029] FIG. 15 is a drawing showing that a heating device according to one embodiment can independently heat a heated object even when separated from a door.

[0030] FIG. 16 is a drawing illustrating a cooking appliance according to one embodiment.

[0031] Fig. 17 is a side cross-sectional view of the cooking appliance of Fig. 16.

[0032] FIG. 18 is a drawing showing a door separated from a cooking appliance according to one embodiment.

[0033] The embodiments described in this specification and the configurations illustrated in the drawings are merely preferred examples of the disclosed invention, and there may be various modified examples that can replace the embodiments and drawings of this specification at the time of filing of this application.

[0034] Additionally, the same reference numbers or symbols presented in each drawing of this specification represent parts or components that perform substantially the same function.

[0035] In addition, the terminology used in this specification is used to describe embodiments and is not intended to limit and / or restrict the disclosed invention. The singular expression includes plural expressions unless the context clearly indicates otherwise. In this specification, the terms "comprises" or "has" and the like are intended to specify the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0036] Additionally, terms including ordinal numbers such as "first", "second", etc. used herein may be used to describe various components, but the components are not limited by the terms, and the terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term "and / or" includes any combination of a plurality of related listed items or any item among a plurality of related listed items.

[0037] Meanwhile, the shape and position of each component are not limited by the terms such as “front,” “back,” “left,” “right,” “upper,” and “lower” used in the description below.

[0038] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0039] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0040] When referring to the direction of rotation, clockwise may be referred to as the first direction, and counterclockwise, the direction opposite to the first direction, may be referred to as the second direction. While these expressions may be commonly used to describe specific details for implementing the invention, the rotational direction of the components of the present invention is not limited by these terms.

[0041] Hereinafter, cooking appliances according to various embodiments will be specifically described with reference to the attached drawings.

[0042] Fig. 1 is a drawing illustrating a cooking appliance according to one embodiment. Fig. 2 is a side cross-sectional view of the cooking appliance of Fig. 1.

[0043] Referring to FIGS. 1 and 2, the cooking appliance (1) may include a body (100) forming an exterior.

[0044] The main body (100) may include a first cooking section (100a) and a second cooking section (100b) located above the first cooking section (100a). The first cooking section (100a) may be an oven, and the second cooking section (100b) may be a range.

[0045] The main body (100) is provided at the bottom of the first cooking section (100a), and may further include a storage room (100c) in the form of a drawer that is inserted and pulled out in a sliding manner.

[0046] In addition, the main body (100) of the cooking appliance (1) may include only the first cooking section (100a) among the first cooking section (100a), the second cooking section (100b), and the storage compartment (100c).

[0047] The main body (100) may have a cooking chamber (110). More specifically, the first cooking unit (100a) may include a cooking chamber (110) forming a cooking space.

[0048] The cooking appliance (1) may include a door (120). The door (120) may be coupled to the main body (100). The door (120) may be coupled to the main body (100) so as to be rotatable.

[0049] The door (120) may include an opening (124). The opening (124) may be provided on the center side of the door (120). The opening (124) may be formed by penetrating the door (120). The door (120) may rotate in a direction that covers the cooking chamber (110). Since the opening (124) is formed in the door (120), even if the door (120) rotates toward the cooking chamber (110), only a portion of the cooking chamber (110) may be covered by the door (120). Accordingly, even if the door (120) covers the cooking chamber (110), the cooking chamber (110) may be communicated with the outside through the opening (124).

[0050] The cooking appliance (1) may include a heating device (200). The heating device (200) may be detachably mounted in an opening (124) formed in a door (120). The heating device (200) may be detachably mounted in the door (120) by inserting a portion of the heating device (200) into the opening (124).

[0051] The heating device (200) may include a body portion (201a). The body portion (201a) may form the exterior of the heating device (200). The body portion (201a) may be formed in a plate shape. The body portion (201a) may be formed in a shape and size corresponding to an opening (124) formed in the door (120).

[0052] The heating device (200) may include a handle portion (220a, 220b). The handle portion (220a, 220b) may be provided so that a user can hold the heating device (200) when detaching or attaching the heating device (200) from the opening (124). The handle portion (220a, 220b) may be formed to protrude from one surface of the body portion (201a). A plurality of handle portions (220a, 220b) may be provided.

[0053] The heating device (200) may include a first handle portion (220a) provided on the upper side of the body portion (201a). The heating device (200) may include a second handle portion (220b) provided on the lower side of the body portion (201a) and spaced apart from the first handle portion (220a). That is, a plurality of handle portions (220a, 220b) may be provided on the upper and lower sides of the body portion (201a), respectively. The handle portions (220a, 220b) may be formed from the body portion (201a) so as to extend along the left and right longitudinal directions of the body portion (201a). The handle portions (220a, 220b) may be provided in a hollow form.

[0054] The heating device (200) may include batteries (210a, 210b). The batteries (210a, 210b) may be electrically connected to the heating unit (250). The batteries (210a, 210b) may be controlled to supply power to the heating unit (250) when the heating device (200) is separated from the door (120). A detailed description of the batteries (210a, 210b) will be provided below.

[0055] The handle portion (220a, 220b) may include a battery receiving chamber (260a, 260b). The battery receiving chamber (260a, 260b) may be a space provided inside the hollow handle portion (220a, 220b). The battery receiving chamber (260a, 260b) may be provided inside the handle portion (220a, 220b) along the direction in which the handle portion extends. The battery (210a, 210b) may be stored in the battery receiving chamber (260a, 260b). The battery receiving chamber (260a, 260b) may be formed to be spaced apart from the body portion (201a).

[0056] The heating device (200) may include a coupling device (230). The heating device (200) may be detachably mounted to the door (120) by the coupling device (230). The specific structure of the heating device (200) and the specific manner in which the heating device (200) is detachably mounted to the door (120) by the coupling device (230) will be described later.

[0057] When a heating device (200) is mounted in the opening (124) of the door (120), and the door (120) rotates to cover the cooking chamber (110), the cooking chamber (110) can be closed by the door (120) and the heating device (200).

[0058] The heating device (200) may include a heating unit (250). The heating unit (250) may be supplied with power and emit heat.

[0059] The heating unit (250) may be positioned adjacent to the body back surface (204) of the heating device (200) so as to face the cooking chamber (110). The body back surface (204) of the heating device (200) may form the back surface of the body portion (201a). The heating unit (250) may be provided to cover a portion of the heating device (200). When the heating device (200) is mounted on the door (120), the heating unit (250) may be electrically connected to the door (120) and may receive power to emit heat. When the heating device (200) is mounted on the door (120), the heating unit (250) may provide heat toward the cooking chamber (110). That is, the heating device (200) may be mounted on the door (120) so that the body back surface (204) faces the cooking chamber (110). The heating unit (250) can heat the cooking chamber (110) by being positioned on the heating unit (200) so as to face the cooking chamber (110) when the heating unit (200) is mounted on the door (120). The heating unit (250) can include a light-transmitting material.

[0060] The heating unit (250) may be provided to heat the front surface of the cooking chamber (110). Accordingly, food inside the cooking chamber (110) may be cooked by heating the front surface by the heating unit (250). In addition, since the heating device (200) provided in the door (120) provided at the front surface of the cooking chamber (110) heats the front surface of the cooking chamber (110), the phenomenon of heat inside the cooking chamber (110) being lost to the outside through the door (120) can be prevented.

[0061] The heating device (200) may include a plug (280). The plug (280) may be configured to be electrically connected to the heating unit (250). When the heating unit (250) is supplied with electricity through the plug (280), the heating unit (250) may emit heat.

[0062] The plug (280) may be formed to protrude outward from the body portion (201a) of the heating device (200). Accordingly, the plug (280) may be smoothly connected to the power supply unit (122) provided externally. In the illustration, the plug (280) is expressed as being formed on the lower surface of the body portion (201a) of the heating device (200), but the position at which the plug (280) is formed may be provided in various ways as long as it can be smoothly connected to the external power supply unit (122).

[0063] The door (120) may include a power supply unit (122). The power supply unit (122) may be electrically connected to an external power source (not shown) provided in the main body (100). The power supply unit (122) may be electrically connected to the plug (280) when the heating device (200) is coupled to the door (120). When the power supply unit (122) is electrically connected to the plug (280), it may supply power to the plug (280). Accordingly, the heating unit (250) may receive power from the power supply unit (122) and emit heat when the heating device (200) is coupled to the door (120).

[0064] The heating device (200) may include a window (242). The window (242) may include a light-transmitting material.

[0065] The window (242) may be positioned at the center of the body portion (201a) of the heating device (200). A portion of the heating device (200) may be made transparent through the window (242). One side of the window (242) may be positioned parallel to the body rear surface portion (204) of the heating device (200). That is, when the heating device (200) is mounted on the door (120), one side of the window (242) may be positioned on the body portion (201a) so as to face the cooking chamber (110). Since the window (242) makes a portion of the heating device (200) transparent, a user can visually check the inside of the cooking chamber (110) from the outside. The one side of the window (242) described above may be a side of the window (242) positioned so as to face the cooking chamber (110).

[0066] The main body (100) of the cooking appliance (1) is arranged adjacent to the cooking chamber (110) and has a space independent from the cooking chamber (110) and may include an electrical compartment (130) in which various electrical components such as circuit boards are provided.

[0067] The main body (130) may include an exhaust duct (131) and a cooling fan (132) that sucks in air from the cooking chamber (110) and exhausts the sucked air from the cooking chamber (110) and the air from the main body (100) to the outside. In addition, a cooling motor (133) for driving the cooling fan (132) may be placed in the main body (130).

[0068] A cooking appliance (1) may include a first cooking section (100a). The first cooking section (100a) may be disposed adjacent to the upper side of the cooking chamber (110) and may include a first cooking section heating source (140) that generates heat and provides heat into the cooking chamber (110). The first cooking section heating source (140) may be provided to heat the upper side of food accommodated in the cooking chamber (110). The first cooking section heating source (140) may be provided as a heater. A plurality of first cooking section heating sources (140) may be provided. After food is accommodated in the cooking chamber (110) and the cooking chamber (110) is sealed by the door (120) and the heating device (200), the first cooking section heating source (140) generates heat and transmits the generated heat to the cooking chamber (110) to cook the food by dry heat.

[0069] The first cooking unit (100a) may include a circulation unit (150) that allows air to circulate within the cooking chamber (110). The circulation unit (150) allows air to circulate within the cooking chamber (110) when cooking food. The hot air within the cooking chamber (110) circulates through the circulation unit (150), thereby heating food contained within the cooking chamber (110) from more diverse directions.

[0070] The circulation unit (150) may include a circulation fan (151) arranged on the back of the cooking chamber (110) to convect air in the cooking chamber (110) and a circulation motor (152) for driving the circulation fan (151).

[0071] A plurality of circulation fans (151) may be provided (see FIG. 2), and the plurality of circulation fans (151) may be arranged vertically within the cooking chamber (110). The plurality of circulation fans (151) may be centrifugal fans or turbo fans that suck in air from the upper side and discharge it in a radial direction.

[0072] The circulation unit (150) can selectively rotate at least one circulation fan (151) among a plurality of circulation fans (151) depending on the location where the food is placed.

[0073] Additionally, the cooking appliance (1) can be arranged to control the speed of air circulating inside the cooking chamber (110) by controlling the rotational force of the circulation motor (152).

[0074] The cooking appliance (1) may include a second cooking section (100b). The second cooking section (100b) may include at least one heating plate (160) that is provided to be exposed to the outside of the main body (100) and on which a cooking container may be placed. The second cooking section (100b) may transfer heat generated toward the cooking container placed on the heating plate (160) to cook food inside the cooking container. The heating plate (160) may be a heater that generates heat using electricity or gas.

[0075] The main body (100) of the cooking appliance (1) may include an interface (170). The interface (170) may be provided to control the amount of heat generated for cooking in the first cooking section (100a) and the second cooking section (100b).

[0076] The interface (170) may include an input unit (171). The input unit (171) may be configured to control the first cooking unit heating source (140). The input unit (171) may be configured as a physical button or a touch button, and may receive on and off commands depending on the number of inputs. Depending on the input from the input unit (171), the first cooking unit heating source (140) may be turned on / off, and may be configured to control the amount of heat applied to the cooking chamber (110).

[0077] The interface (170) may include a display unit (172). The display unit (172) may be provided adjacent to the touch panel and may be provided as a flat panel display panel, such as an LCD, PDP, or OLED, that displays a plurality of buttons and cooking information. The display unit (172) may be provided to display information such as the type of food being cooked in the first cooking unit (100a), cooking mode, cooking temperature, cooking execution time, cooking start time, elapsed time, remaining time, and cooking end time.

[0078] The interface (170) may include a knob (173). The knob (173) may be connected to the heating plate (160) of the second cooking unit (100b) to operate the heating plate (160). The knob (173) may be configured to be rotatable, and may control the amount of heat generated from the heating plate (160) in proportion to the amount of rotation.

[0079] FIG. 3 is a drawing illustrating a separated heating device from a cooking appliance according to one embodiment. FIG. 4 is an exploded drawing illustrating a heating device according to one embodiment. FIG. 5 is a rear view of the drawing of FIG. 4 at a different angle.

[0080] Referring to FIGS. 3 to 5, the door (120) may include a frame portion (121). The frame portion (121) may be formed on the door (120) along the outer periphery of the opening (124). The frame portion (121) may be formed to correspond to the shape of the heating device (300). More specifically, when the heating device (200) is mounted on the door (120), the frame portion (121) may be arranged to come into contact with the body portion (201a) and the body side portions (2031, 2032) of the heating device (200). The frame portion (121) may come into contact with the heating device (200) to close the opening (124). The heating device (200) may be inserted into the opening (124) by coming into contact with the frame portion (121) and may be mounted and seated on the door (120).

[0081] The door (120) may include a border heat dissipation portion (125). The border heat dissipation portion (125) may be formed on the border portion (121). The border heat dissipation portion (125) may be formed along the outer periphery of the border portion (121) adjacent to the cooking chamber (110).

[0082] The edge heat dissipation member (125) may include an elastic material. When the heating device (200) is inserted into the opening (124) of the door (120), the heating device (200) comes into contact with the edge heat dissipation member (125) including the elastic material, thereby being more effectively fixed to the door (120) and packing the opening (124).

[0083] The edge heat dissipation member (125) may include an insulating material. Accordingly, heat inside the cooking chamber (110) can be more effectively prevented from being transmitted to the outside through the body part (201a) of the heating device (300). The heating device (200) may include a body part (201a). The body part (201a) may be arranged on the front side of the heating device (200) to form the front part of the heating device (200).

[0084] The heating device (200) may include body protrusions (2021a, 2022a). The body protrusions (2021a, 2022a) may be formed to protrude from each end of the body portion (201a) of the heating device (200). More specifically, the body protrusions (2021a, 2022a) may be formed to protrude from each corner of the body portion (201a). The body protrusions (2021a, 2022a) may be formed on the front of the heating device (200) in a direction opposite to the direction toward the cooking chamber (110) when the heating device (200) is mounted on the door (120).

[0085] The handle portions (220a, 220b) may be provided on the body portion (201a) and connected to the body protrusion portions (2021a, 2022a). In the illustration, the handle portions (220a, 220b) are provided in the left-right direction and connected to the body protrusion portions (2021a, 2022a), but the handle portions (220a, 220b) may be provided in the up-down direction and connected to the body protrusion portions (2021a, 2022a). The user can attach or detach the heating device (200) from the door (120) by gripping the handle portions (220a, 220b).

[0086] The heating device (200) may include a body opening (201b). The body opening (201b) may be formed inside the body portion (201a). The body opening (201b) may be positioned between the handle portions (202a, 202b). The shape of the body opening (201b) may be approximately rectangular, but is not limited thereto.

[0087] The heating device (200) may include an insulating plate (241). The insulating plate (241) may have a shape corresponding to the body opening (201b). The insulating plate (241) may cover the body opening (201b).

[0088] The insulating plate (241) can be combined with the body part (201a) to cover the body part opening (201b). The insulating plate (241) can be provided so as to be in contact with the outside.

[0089] The insulation plate (241) may include an insulating material. Accordingly, heat inside the cooking chamber (110) may not be transmitted to the outside through the body opening (201b). This allows the heat inside the cooking chamber (110) to be preserved, and safety accidents to external users can be prevented.

[0090] The insulating plate (241) may include a light-transmitting material.

[0091] The heating device (200) may include a window (242). The window (242) may be formed in a shape corresponding to the body opening (201b). The window (242) may cover the body opening (201b). The window (242) may be inserted into the body opening (201b) and coupled with the body opening (201a).

[0092] An insulating plate (241) may be attached to one side of a window (242) that is positioned to face the outside. The insulating plate (241) may be arranged to cover one side of the window (242) that is positioned to face the outside. The window (242) may include a light-transmitting material.

[0093] The heating device (200) may include a heating unit (250). The heating unit (250) may be attached to a window (242). The heating unit (250) may be attached to one side of the window (242) facing the cooking chamber (110).

[0094] The heating device (200) may include an insulating member (243). The insulating member (243) may include an insulating material that blocks heat.

[0095] The insulating member (243) can be coupled to the body back surface (204) of the body portion (201a). More specifically, the insulating member (243) can be coupled to the body portion (201a) such that the front surface (2431) of the insulating member (243) covers the body back surface (204) of the body portion (201a).

[0096] When the insulating member (243) is combined with the body portion (201a), the insulating member (243) can be arranged to cover the battery (201a, 201b) from the cooking chamber (110). Accordingly, the heat inside the cooking chamber (110) is blocked by the insulating member (243) and is not transmitted to the battery (201a, 201b), thereby improving the usability of the heating device (200).

[0097] The insulating member (243) may include an insulating member opening (2432). The window (241) may be positioned to be inserted into the insulating member opening (2432). Accordingly, the insulating member (243) may be coupled to the body rear surface (204) of the body portion (201a) without interference by the window (241), regardless of the thickness of the window (241).

[0098] The heating device (200) may include a heating device rear cover (244). The heating device rear cover (244) may be combined with the body rear surface (204) to cover the rear of the heating device (200). More specifically, the front surface (2441) of the heating device rear cover may be in contact with and combined with the body rear surface (204) and the back surface (2433) of the insulation member.

[0099] The heating device rear cover (244) may include a heating device rear cover opening (2442). The window (241) may be positioned to be inserted into the heating device rear cover opening (2442). When the heating device (200) is mounted on the door (120), the heating unit (250) coupled to the window (241) can pass through the rear cover opening (2442) to apply heat to the cooking chamber (110).

[0100] The heating device rear cover (244) may include a heating device rear cover rear side (2443). When the heating device (200) is mounted on the door (120), the heating device rear cover rear side (2443) may be positioned to face the cooking chamber (110).

[0101] The heating device (200) may include a sealing member (270). The sealing member (270) may be attached to the heating device (200) so as to surround the outer circumference of the heating device (200). More specifically, the sealing member (270) may be attached to the rear cover (244) of the heating device. The sealing member (270) may be attached along the outer circumference of the rear cover (244) of the heating device so as to be adjacent to the rear surface (2443) of the rear cover of the heating device.

[0102] When the heating device (200) is mounted on the door (120), the sealing member (270) may be provided to be in contact with the frame (121). In addition, when the heating device (200) is mounted on the door (120), the sealing member (270) may be in contact with the outer periphery of the frame (121) to more effectively close the opening (124) of the door (120).

[0103] When the heating device (200) is mounted on the door (120), the sealing member (270) may be arranged to come into contact with the edge heat dissipation member (125). The sealing member (270) may include an elastic material. Since both the sealing member (270) and the edge heat dissipation member (125) may include an elastic material, when the heating device (200) is mounted on the door (120), the heating device (200) may more effectively pack the opening (124).

[0104] The sealing member (270) may include a cushioning material. Accordingly, when the heating device (200) is inserted into the opening (124) of the door (120), damage caused by the heating device (200) coming into contact with the edge portion (121) can be prevented. The sealing member (270) may include an insulating material. Accordingly, the phenomenon of heat inside the cooking chamber (110) being lost to the outside can be prevented.

[0105] The frame portion (121) may include a coupling groove (123). The coupling groove (123) may be formed on one surface of the frame portion (121). The coupling groove (123) may be provided so that the coupling device (230) of the heating device (200) is fastened. Accordingly, when the heating device (200) is coupled to the door (120), the coupling groove (123) may be formed at a point corresponding to the point where the coupling device (230) of the heating device (200) is located. The number of coupling grooves (123) may be formed to correspond to the number of coupling devices.

[0106] The frame (121) may include a power supply unit (122). The power supply unit (122) may be formed on one surface of the frame (121). Both the coupling groove and the power supply unit (122) may be formed on one surface of the frame (121). The power supply unit (122) may be electrically connected to an external power source provided in the main body (100) to receive power. When the heating device (200) is mounted on the door (120), the plug (280) of the heating device (200) may be electrically connected to the power supply unit (122) of the frame (121) of the door (120).

[0107] Fig. 6 is a drawing illustrating the interior of a heating device according to one embodiment. Fig. 7 is an enlarged drawing of area A of Fig. 6. Fig. 8 is a drawing illustrating the appearance of the coupling hook being separated from the coupling groove by pressing the trigger in Fig. 6.

[0108] Referring to FIGS. 6 to 8, the heating device (200) may include a coupling device (230). The coupling device (230) of the heating device (200) may be provided to be detachably connected to the coupling groove (123) of the door (120). The coupling device (230) may be arranged so that a portion thereof is accommodated within the body portion (201a). When the heating device (200) is mounted on the door (120), the coupling device (230) and the coupling groove (123) may be in a coupled state.

[0109] The heating device (200) may include a gripping groove (205a). The gripping groove (205a) may be configured to be surrounded by a body portion (201a), body protrusions (2021a, 2022a), and a handle portion (220a, 220b). The gripping groove (205a) may be formed to extend in the left and right directions of the body portion (201a). A user can stably grip the handle portion (220a) by inserting a finger into the gripping groove (205a).

[0110] Below, the method by which the heating device (200) is separated from the door (120) is examined in detail in relation to the coupling device (230) of the heating device (200) and the coupling groove (123) of the door (120).

[0111] The coupling device (230) may include a first coupling portion (231a). The first coupling portion (231a) may include a trigger (2311a). The first coupling portion (231a) may include a pressing portion (2312a) formed to protrude from the trigger (2311a). The first coupling portion (231a) may include a first coupling portion rotational axis (2313a).

[0112] A portion of the trigger (2311a) may be positioned to protrude outward from the body portion (201a). More specifically, a portion of the trigger (2311a) may be positioned within the grip groove (205a) to protrude from the handle portion toward the body portion (201a). When the user grasps the handle portion (220a), the user may grasp the handle portion (220a) by inserting a finger into the grip groove (205a) between the trigger (2311a) and the body portion (201a). This allows the user to press the trigger (2311a) from the body portion (201a) toward the handle portion (220a).

[0113] When a user presses the trigger (2311a), the trigger (2311a) can rotate around the first joint rotation axis (2313a). More specifically, the trigger (2311a) can rotate in a direction from the body portion (201a) toward the handle portion (220a). This can be expressed as the first direction.

[0114] When the trigger (2311a) rotates in the first direction, the pressing portion (2312a) formed to protrude from the trigger (2311a) can also rotate in the first direction.

[0115] The coupling device (230) may include a second coupling portion (231b). The second coupling portion (231b) may include a pressing portion (2321a). The second coupling portion (231b) may include a coupling hook (2322a) extending from the pressing portion (2321a). The second coupling portion (231b) may include a second coupling portion rotational shaft (2323a). The second coupling portion (231b) may include an elastic member (235a) provided to press the coupling hook (2322a). The second coupling portion (231b) may be arranged within the body portion (201a) such that the coupling hook (2322a) is exposed from one surface of the body portion (201a).

[0116] The pressing portion (2321a) may be arranged to come into contact with the pressing portion (2312a). Accordingly, when the pressing portion (2312a) rotates in the first direction, the pressing portion (2321a) may be pressed. When the pressing portion (2321a) is pressed by the pressing portion (2312a), the second engaging portion (231b) may be rotated in a second direction with respect to the second engaging portion rotation axis (2323a). The second direction may be a direction opposite to the first direction.

[0117] When the heating device (200) is mounted on the door (120), the coupling hook (2322a) may be coupled with the coupling groove (123). When the second coupling portion (231b) rotates in the second direction, the coupling hook (2322a) may rotate. In conclusion, the coupling hook (2322a) and the trigger (2311a) may be arranged to be interlocked with each other.

[0118] Through this, the coupling hook (2322a) can be separated from the coupling groove (123), and the heating device (200) can be separated from the door (120).

[0119] When the user does not press the trigger (2311a), the coupling hook (2322a) can be rotated in the first direction by being pressed by the elastic member (235a). As a result, the pressing portion (2321a) also rotates in the first direction, and can press the pressing portion (2312a) of the first coupling portion (231a). By pressing the pressing portion (2321a), the first coupling portion (231a) can be rotated in the second direction, and as a result, the trigger (2311a) can be returned to the state before the user pressed the trigger (2311a).

[0120] The coupling device (230) may include a third coupling portion (233a). The third coupling portion (233a) may be provided to secure the first coupling portion (231a) within the heating device (200). The coupling device (230) may include a fourth coupling portion (234a). The fourth coupling portion (234a) may be provided to secure the second coupling device (230) within the heating device (200).

[0121] The frame (121) may include a power supply unit (122). The power supply unit (122) may be formed on one surface of the frame (121). Both the coupling groove and the power supply unit (122) may be formed on one surface of the frame (121). The power supply unit (122) may be electrically connected to an external power source (not shown) provided in the main body (100) to receive power. When the heating device (200) is mounted on the door (120), the plug (280) of the heating device (200) may be electrically connected to the power supply unit (122) of the frame (121) of the door (120).

[0122] Fig. 9 is a rear perspective view of a heating device according to one embodiment. Fig. 10 is a drawing illustrating that a portion of a heating device according to one embodiment is formed transparently. Fig. 11 is a drawing illustrating that a heating device according to one embodiment can independently heat a heated object even when separated from a door.

[0123] Referring to FIGS. 9 to 11, the heating unit (250) may include a light-transmitting material. The heating unit (250) may be attached to one side of a window (242) facing the cooking chamber (110).

[0124] The insulating plate (241) may include a light-transmitting material. The insulating plate (241) may be arranged to cover one side of a window (242) that faces the outside.

[0125] The window (242) may include a light-transmitting material.

[0126] Accordingly, the user can check the cooking level of the food inside the cooking chamber (110) through the insulation plate (241), window (242) and heating unit (250) from the outside.

[0127] The heating unit (250) may include a graphene material. Graphene is a two-dimensional material composed of a single atomic layer, which refers to a structure in which carbon (C) atoms are arranged in a two-dimensional lattice shape. Graphene can generate heat when supplied with electricity, and can have high electrical conductivity, thermal conductivity, and light transmittance. Since the heating unit (250) includes a graphene material, the heating unit (250) may have light transmittance properties. Accordingly, even when the heating unit (250) includes a graphene material, it can be attached to the window (242) to observe the inside of the cooking chamber (110) from the outside.

[0128] The heating device (200) may include a battery (210a, 210b). The battery (210a, 210b) may be accommodated in a battery accommodation chamber (260a, 260b) provided in the handle portion (220a, 220b). The battery (210a, 210b) may be electrically connected to the heating portion (250). When the heating device (200) is separated from the door (120), the battery (210a, 210b) may be arranged to supply power to the heating device (200). The battery (210a, 210b) may include a rechargeable battery (210a, 210b).

[0129] The battery (210a, 210b) may include a first battery (210a). The first battery (210a) may be accommodated in a first handle portion (220a) disposed on the upper side of the body portion (201a). The first battery (210a) may include a first battery cable (2101a, 2102a). The first battery cable (2101a, 2102a) may be electrically connected to both ends of the heating portion (250) to electrically connect the first battery (210a) to the heating portion (250). The first battery cable (2101a, 2102a) may be disposed inside the heating device (200).

[0130] The batteries (210a, 210b) may include a second battery (210b). The second battery (210b) may be accommodated in a second handle portion (220b) disposed on the lower side of the body portion (201a). The second battery (210b) may include a second battery (210b) cable. The second battery (210b) cable may be electrically connected to both ends of the heating portion (250) to electrically connect the second battery (210b) to the heating portion (250). The second battery (210b) cable may be disposed inside the heating device (200).

[0131] The heating device (200) may include a battery charging cable (2103b). While the battery charging cable (2103b) is illustrated as being connected only to the second battery (210b), it is entirely possible for it to be connected to the first battery (210a). The following description will assume that the battery charging cable (2103b) is connected only to the second battery (210b).

[0132] The battery charging cable (2103b) can electrically connect the plug (280) and the second battery (210b). When the heating device (200) is mounted on the door (120), the plug (280) can be electrically connected to the power supply unit (122) to receive power. At this time, the plug (280) can supply power to the second battery (210b) through the battery charging cable (2103b). Through this, the second battery (210b) can be charged when the heating device (200) is mounted on the door (120). In addition, when the heating device (200) is separated from the door (120), the second battery (210b) can be arranged to supply the charged power to the heating unit (250) so that the heating unit (250) can emit heat.

[0133] When the heating device (200) is separated from the door (120), the user can place the heating device (200) on the support surface by bringing the handle portion (220a, 220b) into contact with the support surface so that the heating portion (250) faces upward.

[0134] Since the heating unit (250) is positioned so that it faces upward and is supplied with power through the batteries (210a, 210b), the user can cook food separately by placing it on the heating unit (250) even if the heating unit (200) is separated from the door (120). Accordingly, if cooking is required in a separate location other than where the cooking device (1) is placed, the user can separate the heating unit (200) and take it to a separate location to cook.

[0135] Fig. 12 is a drawing illustrating a heating device according to one embodiment. Fig. 13 is a side cross-sectional view of the cooking appliance with the heating device of Fig. 12 attached to the door. Below, descriptions of content that overlaps with the above will be omitted.

[0136] Referring to FIGS. 12 and 13, the cooking appliance (2) may include a heating device (300).

[0137] The heating device (300) may include a first plate (300a) including a first heating unit (351a). The first heating unit (351a) may be arranged on one surface of the first plate (300a).

[0138] The heating device (300) may include a second plate (300b) including a second heating portion (352b). The second heating portion (352b) may be disposed on one surface of the second plate (300b). The second plate (300b) may be rotatably coupled to the first plate (300a). The first heating portion (351a) and the second heating portion (352b) may be disposed to face each other when the second plate (300b) rotates to cover the first plate (300a). That is, the second plate (300b) may rotate such that one surface of the second plate (300b) covers one surface of the first plate (300a). Through this, the first heating unit (351a) and the second heating unit (352b) can be arranged to face each other when the second plate (300b) covers the first plate (300a). The specific details regarding the manner in which the second plate (300b) rotates will be described later.

[0139] The first plate (300a) and the second plate (300b) can be inserted into the opening (124) and mounted on the door (120). At this time, the first plate (300a) can include a coupling device (3901, 3902) that allows the heating device (300) to be detachably mounted on the door (120).

[0140] The first plate (300a) may include a sealing member (370). The sealing member (370) may be attached to the first plate (300a) so as to surround the outer periphery of the first plate (300a). The sealing member (370) may include a cushioning material. Therefore, when the heating device (300) is inserted into the opening (124) of the door (120), damage caused by the heating device (300) coming into contact with the edge portion (121) can be prevented. The sealing member (370) may include an insulating material. Therefore, the phenomenon of heat inside the cooking chamber (110) being lost to the outside can be prevented.

[0141] The heating device (300) may include a handle portion (3111a, 3112a). The handle portion (3111a, 3112a) may be formed on the first plate (300a). The handle portion (3111a, 3112a) may be formed to protrude from the other surface of the first plate (300a).

[0142] The handle portions (3111a, 3112a) may include a first handle portion (220a). The first handle portion (3111a) may be formed on an upper side of the other surface of the first plate (300a). The handle portions (3111a, 3112a) may include a second handle portion (3112a). The second handle portion (3112a) may be formed on a lower side of the other surface of the first plate (300a).

[0143] The first plate (300a) may include a plug (380). The door (120) may include a power supply unit (122). When the heating device (300) is mounted on the door (120), the plug (280) may be electrically connected to the power supply unit (122) and may receive power from the power supply unit (122).

[0144] The plug (380) may be electrically connected to the first heating unit (351a) and the second heating unit (352b). More specifically, the plug (280) may include a first plug cable (3511a). The first plug cable (3511a) may be electrically connected to the first heating unit (351a). The plug (280) may include a second plug cable (3531b). The second plug cable (3531b) may be electrically connected to the second heating unit (352b). Through this, when the heating device (300) is mounted on the door (120), the first heating unit (351a) and the second heating unit (352b) may receive power from the power supply unit (122) through the plug (380) and generate heat.

[0145] When the heating device (300) is mounted on the door (120), the first heating unit (351a) and the second heating unit (352b) can emit heat toward the front of the cooking chamber (110). Through this, food accommodated in the cooking chamber (110) can be cooked by heating the front. In addition, since heat is emitted from the heating device (200) mounted on the door (120), the phenomenon of heat inside the cooking chamber (110) being lost to the outside through the door (120) can be prevented.

[0146] Fig. 14 is a drawing showing a state in which the first plate of the heating device of Fig. 12 rotates and separates from the second plate. Fig. 15 is a drawing showing that the heating device according to one embodiment can independently heat an object to be heated even when separated from the door.

[0147] Referring to FIGS. 14 and 15, the heating device (300) may include a hinge (360). The hinge (360) may be coupled to the first plate (300a) and the second plate (300b). The hinge (360) may be coupled to the edge side of the first plate (300a) and the second plate (300b) to connect the first plate (300a) and the second plate (300b). More specifically, the hinge (360) may be coupled to the edge side of the second handle portion (3112a).

[0148] The second plate (300b) can rotate to cover one side of the first plate (300a). Although the number of hinges (360) is shown as two in the illustration, the number of hinges (360) is not limited thereto and may be provided in various ways.

[0149] The first battery (3911) provided in the first handle portion (3111a) of the first plate (300a) may include a first battery cable (3911a, 3911b). The first battery cable (3911a, 3911b) may be electrically connected to the first heating portion (351a). When the heating device (300) is separated from the door (120), the first battery (3911) may supply power to the first heating portion (351a) through the first battery cable (3911a, 3911b).

[0150] The second battery (3912) provided in the second handle portion (3112a) of the first plate (300a) may include a second battery cable (3912a, 3912b). The second battery cable (3912a, 3912b) may be electrically connected to the second heating portion (352b). The second battery cable (3912a, 3912b) may extend from the first plate (300a) to the second plate (300b) via a hinge (360). That is, the hinge (360) may include a hollow portion. When the heating device (300) is separated from the door (120), the second battery (3912) may supply power to the second heating portion (352b) via the second battery cable (3912a, 3912b).

[0151] Even when the heating device (300) is separated from the door (120), the first heating unit (351a) and the second heating unit (352b) can each function as a heat source, so that the user can cook using a wider heating surface area.

[0152] Fig. 16 is a drawing illustrating a cooking appliance according to one embodiment. Fig. 17 is a side cross-sectional view of the cooking appliance of Fig. 16. Fig. 18 is a drawing illustrating a door separated from a cooking appliance according to one embodiment.

[0153] Referring to FIGS. 16 to 18, the cooking appliance (3) may include a door (400).

[0154] The door (400) may include a heating unit (450). The heating unit (450) may be arranged on one side of the door (400). The main body (100) may include a cooking chamber (110). The main body (100) may include a cooking chamber (110) opening (124) communicating with the cooking chamber (110). The door (400) may be detachably coupled to the main body (100) to open and close the cooking chamber (110) opening (124). The door (400) may be coupled to the main body (100) such that one side on which the heating unit (450) is arranged faces the cooking chamber (110).

[0155] The door (400) may include a coupling device (430a, 430b). The main body (100) may include a coupling groove (123). The coupling device (430a, 430b) may be mounted or detached from the coupling groove (123) to couple or detach the door (400) to or from the main body (100).

[0156] The door (400) may include handle portions (420a, 420b). The handle portions (420a, 420b) may include a first handle portion (420a) formed on an upper side of the other surface of the door (400). The handle portions (420a, 420b) may include a second handle portion (420b) formed on a lower side of the other surface of the door (400). The handle portions (420a, 420b) may be provided in a hollow form.

[0157] The door (400) may include a plug (440). The plug (440) may be electrically connected to a heating unit (450). The main body (100) may include a power supply unit (122). When the door (400) is mounted on the main body (100), the plug (440) may be electrically connected to the power supply unit (122). Through this, the heating unit (450) may receive power and generate heat.

[0158] The door (400) may include a battery (410a, 410b). The handle portion (420a, 420b) may include a battery receiving chamber (490a, 490b). The battery (410a, 410b) may be received in the battery receiving chamber (490a, 490b) and provided in the door (400). The battery (410a, 410b) may be electrically connected to the heating portion (450).

[0159] When the door (400) is separated from the main body (100), the battery (410a, 410b) may be arranged to supply power to the heating unit (450). Accordingly, the user can separate the door (400) from the main body (100) and cook through the door (400) in a separate location.

[0160] A cooking appliance (1) according to the invention includes a main body (100) having a cooking chamber (110). The cooking appliance (1) includes a door (120) coupled to the main body (100) to cover a portion of the cooking chamber (110) and including an opening (124). The cooking appliance (1) includes a heating device (200) detachably mountable to the door (120) to open and close the opening (124). The heating device (200), when mounted on the door (120), is electrically connected to the door (120) and includes a heating unit (250) for heating the cooking chamber (110). The heating device (200), when detached from the door (120), includes a battery (210a, 210b) configured to supply power to the heating unit (250).

[0161] The above heating device (200) may further include a coupling device (230) for detachably mounting the heating device (200) to the door (120).

[0162] The above-mentioned coupling device (230) may further include a coupling hook (2322a). The door (120) may further include a frame portion (121) formed on the door (120) along the outer periphery of the opening (124). The frame portion (121) may include a coupling groove (123) provided to allow the coupling hook (2322a) to be fastened.

[0163] The above coupling device (230) may further include a trigger (2311a) that is linked to the coupling hook (2322a), and moves the coupling hook (2322a) so that the coupling hook (2322a) is separated from the coupling groove (123) when pressurized.

[0164] The heating device (200) may further include a body portion (201a) and a handle portion (220a, 220b) formed to protrude from one surface of the body portion (201a). The heating portion (250) may be arranged on the body rear surface (204) side to cover a portion of the heating device (200).

[0165] The above trigger (2311a) can be positioned so as to protrude toward the body portion (201a) from the handle portion (220a, 220b).

[0166] The above handle portion (220a, 220b) may include a battery receiving chamber (260a, 260b) that receives the battery (210a, 210b), and a battery receiving chamber (260a, 260b) formed inside the handle portion (220a, 220b).

[0167] The heating device (200) may further include a plug (280) electrically connected to the heating unit (250). The door (120) may further include a power supply unit (122) electrically connected to the plug (280) to supply power to the heating unit (250) when the heating device (200) is coupled to the door (120).

[0168] The above battery (210a, 210b) can be electrically connected to the plug (280) so that it can be charged by receiving power from the power supply unit (122) when the heating device (200) is coupled to the door (120).

[0169] The above heating unit (250) may include a light-transmitting material.

[0170] The heating device (200) may further include a window (242) that forms a portion of the heating device (200) transparently. The heating unit (250) may be attached to the window (242) so that the cooking chamber (110) is visible when the heating device (200) is mounted on the door (120).

[0171] The heating device (200) may further include a sealing member (270) provided on the outer periphery of the heating device (200) so as to come into contact with the frame (121) when mounted on the door (120).

[0172] The above sealing member (270) may include an insulating material.

[0173] The above heating unit (250) may include a graphene material.

[0174] A cooking appliance (2) according to the invention includes a main body (100) having a cooking chamber (110). The cooking appliance (2) includes a door (120) coupled to the main body (100) to cover a portion of the cooking chamber (110) and including an opening (124). The cooking appliance (1) includes a heating device (300) detachably mountable to the door (120) to open and close the opening (124). The heating device (300) includes a first plate (300a) including a first heating part (351a). The heating device (300) includes a second plate (300b) that is rotatable to cover the first plate (300a) and includes a second heating part (352b). The heating device (300) includes a battery (3911, 3912) that is arranged to supply power to the first heating unit (351a) and the second heating unit (352b) when separated from the door (120). The heating device (300) is arranged such that, when the heating device (300) is mounted on the door (120), the first heating unit (351a) and the second heating unit (352b) are electrically connected to the door (120) and heat the cooking chamber (110).

[0175] The above heating device (300) may further include a coupling device (3901, 3902) for detachably mounting the heating device (300) to the door (120).

[0176] The above coupling device (3901, 3902) may further include coupling hooks (3322a, 3322b). The door (120) may further include a frame portion (121) formed on the door (120) along the outer periphery of the opening (124). The frame portion (121) may include a coupling groove (123) provided to allow the coupling hooks (3322a, 3322b) to be fastened.

[0177] When the second plate (300b) covers the first plate (300a), the first heating part (351a) and the second heating part (352b) can be arranged to face each other.

[0178] The heating device (300) may further include a plug (380) electrically connected to the first heating unit (351a) and the second heating unit (352b). The door (120) may further include a power supply unit (122) electrically connected to the plug (380) to supply power to the first heating unit (351a) and the second heating unit (352b) when the heating device (300) is coupled to the door (120).

[0179] A cooking appliance (1) according to the invention includes a main body (100) having a cooking chamber (110). The cooking appliance (1) includes a door (120) coupled to the main body (100) and including an opening (124). The cooking appliance (1) includes a heating device (200) detachably mountable to the door (120) to open and close the opening (124).

[0180] According to the invention, since a heating device coupled to the door applies heat to the interior of the cooking chamber, the phenomenon of heat energy of the cooking chamber being lost through the door can be prevented.

[0181] According to the concept of the present disclosure, the heating device is separated from the door and is supplied with power through a battery, so that it can be arranged to independently heat the object to be heated.

[0182] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure belongs from the description below.

[0183] The above illustrates and describes specific embodiments. However, the invention is not limited to the above-described embodiments, and those skilled in the art will readily appreciate that various modifications and implementations can be made without departing from the spirit and scope of the invention as set forth in the claims below.

Claims

1. Main body having a cooking compartment; A door coupled to the main body and provided to cover a portion of the cooking chamber, the door including an opening; and A heating device detachably mountable on the door to open and close the opening; The above heating device, A heating unit electrically connected to the door and for heating the cooking chamber when mounted on the door; and A cooking appliance comprising a battery, the battery being arranged to supply power to the heating element when separated from the door.

2. In paragraph 1, A cooking appliance wherein the heating device further includes a coupling device for detachably mounting the heating device to the door.

3. In paragraph 2, The above coupling device further includes a coupling hook, The above door further includes a frame formed on the door along the outer periphery of the opening, A cooking appliance wherein the above-mentioned frame portion includes a joining groove provided to allow the joining hook to be fastened.

4. In paragraph 3, A cooking appliance wherein the above coupling device further includes a trigger that is linked to the coupling hook and moves the coupling hook so that the coupling hook is separated from the coupling groove when pressurized.

5. In paragraph 4, The above heating device, Body and It further includes a handle portion formed to protrude from one side of the above body portion, A cooking appliance in which the heating unit is arranged adjacent to the other surface of the body unit and is provided to cover a part of the heating device.

6. In paragraph 5, A cooking appliance in which the trigger is positioned so as to protrude from the handle portion toward the body portion.

7. In paragraph 5, A cooking appliance in which the handle portion is a battery receiving room that receives the battery, the battery receiving room being formed inside the handle portion.

8. In paragraph 2, The above heating device further includes a plug electrically connected to the heating unit, A cooking appliance wherein the door further includes a power supply unit that is electrically connected to the plug and supplies power to the heating unit when the heating unit is coupled to the door.

9. In paragraph 8, A cooking appliance wherein the battery is electrically connected to the plug so as to be charged by receiving power from the power supply unit when the heating device is coupled to the door.

10. In paragraph 1, A cooking appliance wherein the heating unit includes a light-transmitting material.

11. In paragraph 10, The above heating device further includes a window forming a part of the heating device transparently, A cooking appliance in which the heating unit is attached to the window so that the cooking chamber is visible when the heating device is mounted on the door.

12. In paragraph 3, A cooking appliance wherein the heating device further includes a sealing member provided on the outer periphery of the heating device so as to come into contact with the frame when mounted on the door.

13. In paragraph 12, The above sealing member is a cooking appliance including an insulating material.

14. In paragraph 1, A cooking appliance wherein the heating unit includes a graphene material.

Images