Cooking apparatus

Abstract

Provided is a cooking apparatus having a tray seating structure having an improved structure. The cooking apparatus comprises: a housing comprising a cooking chamber; a tray disposed in the cooking chamber so as to support food to be heated, and comprising a guide provided at the bottom surface center position thereof, and first coupling parts provided in the circumferential direction on the outer side of the guide; and a coupler provided on the lower portion of the cooking chamber and coupled to a motor for generating a driving force for rotating the tray. The coupler comprises: a guide seating part provided so that the guide of the tray is seated thereon; and second coupling parts disposed on the outer side of the guide seating part and provided so as to be coupled to the first coupling parts by being rotated in a state where the guide is seated on the guide seating part.

Description

Cooking appliances

[0001] The present disclosure relates to a cooking appliance, and more particularly, to a cooking appliance having an improved tray mounting structure.

[0002] A cooking appliance is a device that heats and cooks food or other objects, and can provide various functions related to cooking, such as heating, defrosting, drying, and sterilizing the object.

[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] Typically, a microwave oven is equipped with a cooking chamber that holds food inside the main body and cooks it, a tray on which the food is placed inside the cooking chamber, and a driving motor that rotates the tray.

[0005] One aspect of the present disclosure provides a cooking appliance having an improved tray mounting structure.

[0006] One aspect of the present disclosure provides a cooking appliance having an improved structure to easily seat a tray in a coupler.

[0007] One aspect of the present disclosure provides a cooking appliance having an improved structure in which the center of the tray is assembled and rotated to be seated on the coupler.

[0008] One aspect of the present disclosure provides a cooking appliance that improves user convenience by improving the settling structure of a tray.

[0009] One aspect of the present disclosure provides a method of assembling a tray that easily seats the tray in a coupler.

[0010] 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.

[0011] A cooking appliance according to the invention comprises: a housing including a cooking chamber; a tray including a guide disposed in the cooking chamber to support food to be heated, the guide being provided at a bottom center position, and a first coupling portion provided circumferentially on the outside of the guide; a coupler provided at a lower portion of the cooking chamber and connected to a motor that generates a driving force for rotating the tray; the coupler includes a guide mounting portion provided for mounting the guide of the tray; and a second coupling portion disposed outside the guide mounting portion so that the guide is rotated while mounted on the guide mounting portion and coupled to the first coupling portion.

[0012] In a method for assembling a tray to a coupler according to the idea of ​​the present disclosure, the tray includes a guide provided at the center of a bottom surface, and a first coupling portion arranged circumferentially spaced apart from the guide, and the coupler has a guide mounting portion provided at the center that protrudes so that the guide is mounted, and a second coupling portion arranged circumferentially spaced apart from the first coupling portion is provided on the outside of the guide mounting portion, so that the guide is mounted on the guide mounting portion and rotates to assemble the second coupling portion to the first coupling portion.

[0013] According to the present disclosure, the tray can be easily mounted on the coupler.

[0014] One aspect of the present disclosure provides a cooking appliance having an improved structure in which the center of the tray is assembled and rotated to be seated on the coupler.

[0015] One aspect of the present disclosure provides a cooking appliance that improves user convenience by improving the settling structure of a tray.

[0016] 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.

[0017] Figure 1 is a perspective view showing a cooking appliance according to one embodiment;

[0018] Figure 2 is a partially exploded perspective view of the cooking appliance illustrated in Figure 1;

[0019] Figure 3 is a partial cross-sectional view of the cooking appliance shown in Figure 2;

[0020] Figure 4 is an exploded perspective view showing a tray connected to the motor of the cooking appliance illustrated in Figure 3;

[0021] Figure 5 is an exploded perspective view showing a tray and coupler according to one embodiment;

[0022] Figure 6 is a perspective view showing the combination of a tray and a coupler according to one embodiment;

[0023] Figure 7 is a drawing showing an assembled state of a coupler and a tray according to one embodiment;

[0024] Fig. 8 is a drawing showing the assembly state of the coupler and the tray by the tray rotation shown in Fig. 7.

[0025] Fig. 9 is a drawing showing a coupler in an assembled state with the tray illustrated in Fig. 8;

[0026] Fig. 10 is a cross-sectional view showing a state in which a tray is assembled to a coupler according to one embodiment;

[0027] Figure 11 is an exploded perspective view showing a tray and coupler according to one embodiment;

[0028] Fig. 12 is a perspective view showing the combination of a tray and a coupler according to one embodiment;

[0029] Figure 13 is a drawing showing the assembled state of a coupler and a tray according to one embodiment;

[0030] Fig. 14 is a cross-sectional view showing a state in which a tray is assembled to a coupler according to one embodiment;

[0031] Figure 15 is an exploded perspective view showing a tray and coupler according to one embodiment;

[0032] Fig. 16 is a perspective view showing the combination of a tray and a coupler according to one embodiment;

[0033] Figure 17 is a drawing showing the assembled state of a coupler and a tray according to one embodiment;

[0034] Fig. 18 is a cross-sectional view showing a state in which a tray is assembled to a coupler according to one embodiment;

[0035] Figure 19 is an exploded perspective view showing a tray and coupler according to one embodiment;

[0036] Fig. 20 is a perspective view showing the combination of a tray and a coupler according to one embodiment;

[0037] Fig. 21 is a drawing showing the assembled state of a coupler and a tray according to one embodiment;

[0038] Fig. 22 is a cross-sectional view showing a tray assembled to a coupler according to one embodiment;

[0039] Figure 23 is an exploded perspective view showing a tray and coupler according to one embodiment;

[0040] Fig. 24 is a perspective view showing the combination of a tray and a coupler according to one embodiment;

[0041] Fig. 25 is a drawing showing the assembled state of a coupler and a tray according to one embodiment;

[0042] Fig. 26 is a cross-sectional view showing a tray assembled to a coupler according to one embodiment;

[0043] Figure 27 is an exploded perspective view showing a tray, coupler, and roller assembly according to one embodiment;

[0044] FIG. 28 is a cross-sectional view showing a tray, coupler, and roller assembly according to one embodiment shown in FIG. 27;

[0045] Fig. 29 is an enlarged view of a portion of Fig. 28, showing the state of coupling of a roller and a tray according to one embodiment.

[0046] It should be understood that the various embodiments of the document and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but rather to encompass various modifications, equivalents, or alternatives of the embodiments.

[0047] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0048] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0049] In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in that phrase, or all possible combinations thereof.

[0050] The term "and / or" includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0051] Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another and do not qualify the components in any other respect (e.g., importance or order).

[0052] When a component (e.g., a first component) is referred to as being “coupled” or “connected” to another component (e.g., a second component), with or without the terms “functionally” or “communicatively,” it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0053] The terms "include" or "have" are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in this document, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0054] 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.

[0055] 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 another component exists between the two components.

[0056] *Meanwhile, the terms “front,” “rear,” “left,” and “right” used in the description below are defined based on the drawing, and the shape and location of each component are not limited by these terms.

[0057] Hereinafter, the embodiments described in this specification will be described in detail with reference to the attached drawings.

[0058] The success of microwave cooking can depend on how evenly the temperature distribution is within the food after cooking. In other words, the smaller the temperature variation within the food after cooking, the more satisfied the user will be with the results.

[0059] In order to make the temperature distribution inside the food uniform, the electromagnetic field distribution inside the food must be uniform.

[0060] The primary problem with microwave ovens is the uneven distribution of electromagnetic fields within the food, causing uneven heating. During microwave operation, a specific electromagnetic field distribution is created within the microwave oven's cooking chamber. This can create areas of high and low electromagnetic field distribution within the food, leading to uneven heating.

[0061] In general, food can be heated evenly by forming a uniform electromagnetic field throughout the cooking room.

[0062] As an example, a food item can be cooked by radiating high frequency into the cooking chamber while the food is stored on a tray that is rotatable inside the cooking chamber.

[0063] When high frequency is radiated into the interior of the cooking chamber, the food item contained in the tray can be heated evenly while rotating by the rotation of the tray.

[0064] The tray may be detachably provided in the cooking chamber. The tray may be detachably connected to a motor configured to rotate the tray and a coupler connected to the motor.

[0065] Below we will look at a method for assembling the tray into the cooking chamber, i.e., assembling it to a coupler connected to a motor for rotating the tray.

[0066] FIG. 1 is a perspective view showing a cooking appliance according to one embodiment, and FIG. 2 is a partially exploded perspective view of the cooking appliance shown in FIG. 1.

[0067] As shown in FIGS. 1 and 2, the cooking appliance (1) may include a main body (10).

[0068] The main body (10) can form a cooking chamber (41). The main body (10) can include an outer case (11) and an inner case (20). The outer case (11) can form the outer shape of the main body (10). The outer case (11) can include a front panel (21), a rear panel (22), a bottom panel (23), and a cover (12). The cover (12) can be placed between the front panel (21) and the rear panel (22). The cover (12) can include a side panel (14) and a top panel (13).

[0069] The inner case (20) may be placed inside the outer case (11). The inner case (20) may form a cooking chamber (41). The inner case (20) may be formed in a rectangular parallelepiped shape with one side open. A cooking chamber (50) may be formed between the outer case (11) and the inner case (20). The inner case (20) may include a bottom surface (25) forming the bottom of the cooking chamber (41). The bottom surface (25) will be described in detail later. The outer case (11) and the inner case (20) may be collectively referred to as a housing.

[0070] The cooking appliance (1) may include a door (40) coupled to the front panel (21) of the main body (10) to open and close the cooking chamber (41). The door (40) may be rotatably coupled to the main body (10).

[0071] The cooking appliance (1) may include a control panel (30) including an input unit (31) for receiving user input and a display unit (32) for displaying input information. The control panel (30) may be placed on one side of the door (40).

[0072] A cooking appliance (1) may include a heating source for cooking a food. For example, the heating source may include a magnetron (52) configured to generate high frequency waves for supplying them to the interior of a cooking chamber (41), and a high voltage transformer (53) and / or a high voltage condenser (54) for supplying high voltage to the magnetron (52). The magnetron (52), the high voltage transformer (53), and / or the high voltage condenser (54) may be located in the electrical equipment room (50).

[0073] The cooking appliance (1) may include a cooling fan (55) for cooling the components inside the electric compartment (50). The cooling fan (55) may be located in the electric compartment (50).

[0074] A cooking appliance (1) may include a tray (70) provided to accommodate food to be cooked within a cooking chamber (41). A tray (70) for placing food to be cooked may be provided in the cooking chamber (41). The tray (70) may be installed in the cooking chamber (41) so as to be rotatable.

[0075] Fig. 3 is a partial cross-sectional view of the cooking appliance illustrated in Fig. 2, Fig. 4 is an exploded perspective view showing a tray connected to the motor of the cooking appliance illustrated in Fig. 3, and Fig. 5 is an exploded perspective view showing a tray and a coupler according to one embodiment. Hereinafter, descriptions of parts overlapping with the above descriptions are omitted.

[0076] As shown in FIGS. 3 to 5, the cooking appliance (1) may include a tray (70) provided inside the cooking chamber (41).

[0077] The tray (70) may be placed apart from the bottom surface (25) of the cooking chamber (41). The tray (70) may be installed in the cooking chamber (41) so as to be rotatable. The tray (70) may be rotated by a rotation unit (60) so that food placed on the tray (70) may be evenly heated by microwaves. The rotation unit (60) may include a motor (61) that generates a rotational driving force for rotating the tray (70).

[0078] The motor (61) may be provided at the bottom of the cooking chamber (41). The motor (61) may be arranged at the bottom of the floor surface (25) of the cooking chamber (41). A coupler coupling portion (26a) may be formed at the bottom surface (25) of the cooking chamber (41) so that the rotation shaft (62) of the motor (61) may pass through it. The coupler coupling portion (26a) may be formed at the center of the floor surface (25).

[0079] The bottom surface (25) of the cooking chamber (41) is provided in a roughly square plate shape. The tray (70) can be positioned at the center of the cooking chamber (41) so that microwaves can be uniformly transmitted to the food. A tray receiving portion (26) for receiving the tray (70) can be provided on the bottom surface (25). The tray receiving portion (26) can be provided at the center of the bottom surface (25). The tray receiving portion (26) can be provided to be recessed downward from the bottom surface (25). Specifically, the bottom surface (25) of the cooking chamber (41) can include a first portion (25a) in which a motor (61) is installed, a second portion (25b) in which a tray (70) is provided to be received, and a third portion (25c) forming the bottom of the cooking chamber (41). The first part (25a), the second part (25b), and the third part (25c) forming the bottom surface (25) can be provided at different heights.

[0080] The first part (25a) may be provided so that a motor (61) and a coupler (100) connected to the motor (61) can be installed. A motor bracket (25d) forming a space (S) so that the motor (61) and the coupler (100) can be installed may be provided at the lower portion of the first part (25a). The motor bracket (25d) is coupled to the lower portion of the first part (25a) of the bottom surface (25) to form a space therein. The motor (61) may be provided at the lower portion of the motor bracket (25d). A motor coupling portion (25e) may be provided at the motor bracket (25d). The motor coupling portion (25e) may be provided so that a rotational shaft (62) of the motor (61) can pass through and be coupled to the coupler (100). The rotational shaft (62) of the motor (61) can pass through the motor coupling portion (25e) and be coupled to the coupler (100). The coupler (100) can be coupled to the rotation shaft (62) of the motor (61) through the coupler coupling portion (26a) formed on the first portion (25a) of the bottom surface (25).

[0081] The second part (25b) may be provided lower than the third part (25c) and higher than the first part (25a). A tray (70) may be accommodated in the second part (25b). The tray (70) may be rotatably supported by a roller assembly (80) in the second part (25b). The tray (70) accommodated in the second part (25b) may be provided to have the same height as the third part (25c) of the bottom surface (25). The tray (70) rotatably accommodated in the second part (25b) of the bottom surface (25) may be provided to have a similar height as the third part (25c) of the bottom surface (25).

[0082] The tray (70) can be rotatably received on the second portion (25b) of the bottom surface (25) of the cooking chamber (41). A roller assembly (80) can be provided to rotatably support the tray (70). The roller assembly (80) can include a circular ring (81) and a roller (82) mounted on the ring (81). The ring (81) can be formed smaller than the tray (70). A roller mounting portion (83) for mounting the roller (82) on the ring (81) can be provided. A plurality of rollers (82) can be provided. The rollers (82) can be mounted on the ring (81) at a predetermined interval. The tray (70) can rotate while maintaining balance by the rollers (82). A plurality of rollers (82) can be provided to rotatably support the tray (70). In this embodiment, three rollers are arranged at 120-degree intervals in a circular ring, but this is not limited thereto.

[0083] The tray (70) can be connected to a coupler (100) so as to be rotatable. The tray (70) can be coupled to a coupler (100) that is connected to a rotation unit (60) so as to be rotatable in the cooking chamber (41).

[0084] FIG. 6 is a perspective view showing the combination of a tray and a coupler according to one embodiment, FIG. 7 is a view showing a state of a coupler and a tray being assembled according to one embodiment, FIG. 8 is a view showing an assembled state of a coupler and a tray by the rotation of the tray shown in FIG. 7, FIG. 9 is a view showing a coupler in a state in which the tray shown in FIG. 8 is assembled, and FIG. 10 is a cross-sectional view showing a state in which a tray is assembled to a coupler according to one embodiment. Hereinafter, descriptions of parts overlapping with the above descriptions are omitted.

[0085] As shown in FIGS. 6 to 10, the tray (70) is provided so that it can be coupled with a coupler (100).

[0086] The tray (70) may include a guide (200) that is arranged to be seated on the coupler (100). The tray (70) may include a guide (200) that is arranged at the center of the bottom surface (72) of the tray. The tray (70) may include a first coupling portion (400) that is arranged to be coupled to the coupler (100). The first coupling portion (400) may be arranged on the outside of the guide (200).

[0087] The tray (70) may be provided in a circular shape. The tray (70) may include a tray upper surface (71) facing the cooking chamber (41) and a tray lower surface (72) facing the bottom surface (25) of the cooking chamber (41).

[0088] Food can be placed on the upper surface (71) of the tray. A guide (200) and a first coupling portion (400) can be provided on the lower surface (72) of the tray so that a coupler (100) can be coupled thereto.

[0089] The guide (200) may be provided at the center position of the tray bottom surface (72). The first coupling portion (400) may include coupling protrusions (420) that are spaced apart from each other in the outer circumferential direction of the guide (200). The coupling protrusions (420) may be provided in multiple numbers. The first coupling portion (400) may include a coupling groove (410) formed by the coupling protrusions (420). The coupling groove (410) may be formed between the coupling protrusion (420) and another coupling protrusion (420) adjacent to the coupling protrusion (420).

[0090] The tray (70) can be rotatably mounted in the cooking chamber (41) by having a guide (200) formed on the bottom surface (72) of the tray be seated on a coupler (100) provided on the bottom surface (25) of the cooking chamber (41).

[0091] The guide (200) of the tray (70) may be provided at the center of the tray (70). The guide (200) of the tray (70) may be formed by engaging protrusions (420) that are spaced apart from each other in the circumferential direction on the outside of the guide (200). The guide (200) may be formed in an approximately circular shape. The engaging protrusions (420) of the tray (70) may be provided to protrude from the bottom surface (72) of the tray. Each engaging protrusion (420) may include a curved portion (421) having a curvature (R) in the center direction to form a circular guide (200) at the center of the bottom surface (72) of the tray. The curved portion (421) of the engaging protrusion (420) may form at least a part of the first engaging portion (400). Each engaging protrusion (420) may include a curved portion (421). Each coupling protrusion (420) may include an inclined portion (422) on the outer surface to guide coupling with the coupler (100). The inclined portions (422) may be provided on both sides of each coupling protrusion (420). The inclined portions (422) may be provided to be inclined toward the center of the tray (70). The inclined portions (422) may be provided on each coupling protrusion (420).

[0092] The coupling groove (410) of the tray (70) may be provided between the coupling protrusions (420) and adjacent coupling protrusions (420). Specifically, three coupling protrusions (420) of the tray (70) are arranged at 120-degree intervals, and the coupling grooves (410) may be provided between each coupling protrusion (420) and the coupling protrusions (420). Three coupling grooves (410) may be provided. Three second coupling portions (500) of the coupler (100) corresponding to these may also be provided. A detailed description of the second coupling portions (500) of the coupler (100) will be described later.

[0093] The guide (200) and the coupling groove (410) of the tray (70) can be provided by a plurality of coupling protrusions (420). Three coupling protrusions (420) of the tray (70) can be arranged at a certain distance from the center. A guide (200) is positioned at the center of the tray (70) to guide the center of the tray (70), and a first coupling part (400) is positioned around the guide (200) of the tray (70) to couple the coupler (100) so that the tray (70) can rotate.

[0094] The coupler (100) may include a connecting body (110) that is provided to be coupled to the rotational shaft (62) of the motor (61). The connecting body (110) of the coupler (100) may be provided in a cylindrical shape. The connecting body (110) of the coupler (100) may include a connecting groove (111) corresponding to the rotational shaft (62) of the motor (61). The connecting groove (111) may be formed in a shape corresponding to the rotational shaft (62) of the motor (61). The connecting body (110) of the coupler (100) may be connected to the rotational shaft (62) of the motor (61). The coupler (100) may be rotated by the connecting body (110) connected to the rotational shaft (62) of the motor (61).

[0095] The coupler (100) is provided so that the tray (70) can be secured and coupled. The coupler (100) is provided so that the center of the tray (70) is secured. The coupler (100) may include a guide securing portion (300) corresponding to the guide (200) provided at the center of the tray (70).

[0096] The guide mounting portion (300) of the coupler (100) may be provided at the center of the upper surface of the coupler (100). The guide mounting portion (300) of the coupler (100) may be provided to correspond to be coupled to the guide (200). The guide mounting portion (300) of the coupler (100) is provided so that when the tray (70) is mounted on the coupler (100), the guide mounting portion (300) guides the guide (200) so that the tray (70) and the coupler (100) can be pre-assembled. The guide mounting portion (300) may be provided to guide the center position of the tray (70) for assembling the tray (70) and the coupler (100). The guide mounting portion (300) may be provided to protrude from the center of the coupler (100). The guide mounting portion (300) may be formed to protrude toward the tray (70). The guide mounting portion (300) may be provided in a circular shape. The guide mounting portion (300) may be a circular plate having a first thickness (t1).

[0097] The coupler (100) may include a second coupling portion (500) that is arranged to be rotated and coupled with the tray (70) in a pre-assembled state. Specifically, the coupler (100) may include a second coupling portion (500) that is arranged on the outside of the guide mounting portion (300) and is arranged to be rotated and coupled to the first coupling portion (400) of the tray (70) while the guide mounting portion (300) is fitted to the guide (200). The second coupling portion (500) may be arranged radially from the guide mounting portion (300). The second coupling portion (500) may include a plurality of coupling bodies (500a).

[0098] The coupling body (500a) may be provided to correspond to the coupling groove (410) of the tray (70). The coupling body (500a) may be composed of a first surface (501), a second surface (502) provided to face the first surface (501), and a third surface (503) connecting the first surface (501) and the second surface (502). The first surface (501) may be provided in the same direction as the guide mounting portion (300). The third surface (503) may be a border surface, i.e., a side surface, connecting the first surface (501) and the second surface (502). The coupling body (500a) may be provided to have a second thickness (t2). The second thickness (t2) of the coupling body (500a) may be formed to be smaller than the first thickness (t1) of the guide mounting portion (300). The guide mounting portion (300) of the first thickness (t1) may be formed thicker than the joining body (500a) of the second thickness (t2). The guide mounting portion (300) may be formed to protrude toward the tray (70) more than the second joining portion (500).

[0099] The coupling body (500a) may be provided to be coupled to the coupling groove (410) of the tray (70). The first surface (501) of the coupling body (500a) may include an inclined surface (540) formed to be inclined so that the coupling body can be seated in the coupling groove (410) along the coupling protrusion (420) of the tray (70). The third surface (503) of the coupling body (500a) may include an inclined surface (540) formed to be inclined so that the coupling body can be seated in the coupling groove (410) along the coupling protrusion (420) of the tray (70). The inclined surface (540) of the coupling body (500a) allows the tray (70) to rotate along the inclined portion (422) formed in the coupling protrusion (420) of the tray (70) so that the coupling body (500a) of the second coupling portion (500) can be coupled to the coupling groove (410).

[0100] The tray (70) is first assembled by the guide (200) at the center of the tray bottom (72) by the guide mounting portion (300) of the coupler (100). The tray (70) can guide the center position of the tray (70) by the guide (200) provided at the center of the tray bottom (72) and the guide mounting portion (300) provided at the center of the coupler (100). When the guide (200) of the tray (70) is temporarily assembled by the guide mounting portion (300) of the coupler (100), when the tray (70) is rotated, the coupling protrusion (420) of the tray (70) can be mounted and coupled to the second coupling portion (500) of the coupler (100). The inclined surface (540) formed on the coupling protrusion (420) of the tray (70) can be coupled along the inclined portion (422) of the second coupling portion (500). The second coupling portion (500) of the coupler (100) can be coupled by being seated in the coupling groove (410) formed between the coupling protrusions (420) of the tray (70).

[0101] By first assembling the central position of the tray (70) by combining the guide mounting portion (300) provided at the center of the coupler (100) and the guide (200) of the tray (70), and then rotating the tray (70) to mount the second coupling portion (500) and coupling groove (410) of the coupler (100), the assembly of the tray (70) and the coupler (100) can be facilitated.

[0102] In addition, by accurately seating and connecting the tray (70) to the coupler (100), factors that impede the rotation of the tray (70) can be removed, and the rotation of the tray (70) can be facilitated, so that the food on the tray (70) can be evenly heated.

[0103] Fig. 11 is an exploded perspective view showing a tray and a coupler according to one embodiment, Fig. 12 is a perspective view showing the combination of a tray and a coupler according to one embodiment, Fig. 13 is a drawing showing an assembled state of a coupler and a tray according to one embodiment, and Fig. 14 is a cross-sectional view showing a state in which a tray is assembled to a coupler according to one embodiment. Hereinafter, descriptions of parts overlapping with the above descriptions are omitted.

[0104] As shown in FIGS. 11 to 14, the tray (70A) is provided so that it can be coupled with the coupler (100A). The tray (70A) is provided so that it can be seated on the coupler (100A).

[0105] A guide (200A) and a first coupling portion (400A) may be provided on the bottom surface of the tray (72A) so that a coupler (100A) can be coupled.

[0106] The guide (200A) and the first coupling portion (400A) may be provided at the center of the tray bottom surface (72A). The guide (200A) may be provided at the center position of the tray bottom surface (72). The first coupling portion (400A) may include coupling protrusions (420A) that are spaced apart from each other in the circumferential direction on the outer side of the guide (200A). The coupling protrusions (420A) may be provided in multiple numbers. The first coupling portion (400A) may include a coupling groove (410A) formed by the coupling protrusions (420A). The coupling groove (410A) may be formed between the coupling protrusion (420A) and another coupling protrusion (420A) adjacent to the coupling protrusion (420A).

[0107] The tray (70A) can be rotatably mounted in the cooking chamber (41) by having the guide (200A) formed on the bottom surface (72) of the tray and the first coupling portion (400A) mounted on the coupler (100A) provided on the bottom surface (25) of the cooking chamber (41).

[0108] The first connecting portion (400A) of the tray (70A) can be formed by connecting projections (420A) spaced apart in the circumferential direction on the outside of the guide (200A).

[0109] The engaging projection (420A) of the tray (70A) may be provided to protrude from the bottom surface (72) of the tray. The engaging projections (420A) may be provided in multiple numbers. Each engaging projection (420A) may include a curved portion (421A) having a curvature (R) toward the center to form a circular guide (200A) at the center of the bottom surface (72) of the tray. The curved portion (421A) of the engaging projection (420A) may form at least a part of the guide (200A). Each engaging projection (420A) may include a curved portion (421A). Each engaging projection (420A) may include an inclined portion (422A) on the outer surface to guide the engaging with the coupler (100A). The inclined portions (422A) may be provided on both sides of the engaging projection (420A). The inclined portion (422A) may be arranged to be inclined toward the center of the tray (70A).

[0110] The joining groove (410A) of the tray (70A) can be provided between the joining projection (420A) and the adjacent joining projection (420A).

[0111] The coupler (100A) may include a connecting body (110) that is provided to be coupled to the rotational shaft (62) of the motor (61). The connecting body (110) of the coupler (100A) may be provided in a cylindrical shape.

[0112] The coupler (100A) is provided so that the tray (70A) can be secured and coupled. The coupler (100A) is provided so that the center of the tray (70A) is guided.

[0113] The coupler (100A) may include a guide mounting portion (300A) corresponding to a guide (200A) provided at the center of the tray (70A). The guide mounting portion (300A) of the coupler (100A) may be provided at the center of the upper surface of the coupler (100A). The guide mounting portion (300A) of the coupler (100A) may be provided correspondingly to be coupled to the guide (200A). The guide mounting portion (300A) of the coupler (100A) is provided so that when the tray (70A) is mounted on the coupler (100A), the guide mounting portion (300A) guides the guide (200A) so that the tray (70A) and the coupler (100A) can be pre-assembled.

[0114] The guide mounting portion (300A) may be provided to guide the center position of the tray (70A) for assembling the tray (70A) and the coupler (100A). The guide mounting portion (300A) may be provided to protrude from the center of the coupler (100A). The guide mounting portion (300A) may be formed to protrude toward the tray (70). The guide mounting portion (300A) may be provided in a circular shape.

[0115] The coupler (100A) may include a second coupling portion (500A) that is configured to be rotated and coupled with the tray (70A) in a pre-assembled state. The second coupling portion (500A) may include a guide groove (510A). The guide groove (510A) may be arranged on the outside of the guide mounting portion (300A). The guide groove (510A) may be arranged radially from the center of the upper surface of the coupler (100A). The guide groove (510A) may be arranged to correspond to the coupling protrusion (420A) of the tray (70A).

[0116] Specifically, the coupler (100A) may include a second coupling portion (500A) that is arranged on the outside of the guide mounting portion (300A) and is configured to be fitted into the coupling projection (420A) of the tray (70A) by rotating the guide mounting portion (300A) while being fitted into the guide (200A).

[0117] The guide groove (510A) may be provided to be coupled to the engaging projection (420A) of the tray (70A). The guide groove (510A) may include an inclined surface (511A) that is formed to be inclined so that it can be fitted into the engaging projection (420A) of the tray (70A). The inclined surface (511A) of the guide groove (510A) may be seated on the engaging projection (420A) of the tray (70A). The inclined surface (511A) of the guide groove (510A) may be coupled along the inclined portion (422A) formed on the engaging projection (420A) of the tray (70A).

[0118] The tray (70A) is first assembled by the guide (200A) at the center of the tray bottom (72) by the guide mounting portion (300A) of the coupler (100A). The center position of the tray (70A) can be pre-assembled by the guide (200A) provided at the center of the tray bottom (72) and the guide mounting portion (300A) provided at the center of the coupler (100A).

[0119] When the tray (70A) is assembled and the tray (70A) is rotated, the engaging projection (420A) of the tray (70A) can be seated and coupled to the second engaging portion (500A) of the coupler (100A), that is, the guide groove (510A). By accurately seating and coupling the tray (70A) to the coupler (100A) through the assembly structure of the tray (70A) and the coupler (100A) in this manner, factors that impede the rotation of the tray (70A) can be eliminated, and the rotation of the tray (70A) can be facilitated, so that the food on the tray (70A) can be evenly heated.

[0120] Fig. 15 is an exploded perspective view showing a tray and a coupler according to one embodiment, Fig. 16 is a perspective view showing the combination of a tray and a coupler according to one embodiment, Fig. 17 is a drawing showing an assembled state of a coupler and a tray according to one embodiment, and Fig. 18 is a cross-sectional view showing a state in which a tray is assembled to a coupler according to one embodiment. Hereinafter, descriptions of parts overlapping with the above descriptions are omitted.

[0121] As shown in FIGS. 15 to 18, the tray (70B) is provided so that it can be coupled with the coupler (100B). The tray (70B) is provided so that it can be seated on the coupler (100B).

[0122] A guide (200B) and a first coupling portion (400B) may be provided on the tray bottom (72B) so that a coupler (100B) can be coupled thereto.

[0123] The tray (70B) can be rotatably mounted in the cooking chamber (41) by having the guide (200B) formed on the bottom surface (72B) of the tray and the first coupling portion (400B) mounted on the coupler (100B) provided on the bottom surface (25) of the cooking chamber (41).

[0124] The guide (200B) may be provided at the center of the tray bottom surface (72B). The guide (200B) may be provided at the center position of the tray bottom surface (72B). The first coupling portion (400B) may include coupling protrusions (420B) that are spaced apart from each other in the circumferential direction on the outer side of the guide guide (200B). The coupling protrusions (420B) may be provided in multiple numbers. The first coupling portion (400B) may include a coupling groove (410B) formed by the coupling protrusions (420B). The coupling groove (410B) may be formed between the coupling protrusion (420B) and another coupling protrusion (420B) adjacent to the coupling protrusion (420B).

[0125] The guide (200B) of the tray (70B) may include a plurality of protrusions (211B). The plurality of protrusions (211B) may be provided to protrude from the center of the bottom surface (72B) of the tray. The plurality of protrusions (211B) may be arranged in an outward direction from the center of the tray (70B). The plurality of protrusions (211B) may be provided to protrude radially. In the present embodiment, three protrusions are provided as an example, but the present invention is not limited thereto. The plurality of protrusions may be changed according to the size and shape of the tray. The plurality of protrusions (211B) may be formed so that three of them face outward from the center.

[0126] Each of the plurality of protrusions (211B) constituting the guide (200B) may include a mounting portion (212B) having an inclined outer surface. The mounting portion (212B) may be formed on the outer surface of each protrusion (211B). Each protrusion (211B) may include a mounting portion (212B) having an inclined outer surface. The mounting portion (212B) may be provided so that the guide mounting portion (300B) of the coupler (100B) may be mounted thereon. The mounting portion (212B) may be formed to be inclined from the center outward.

[0127] The engaging projection (420B) of the tray (70B) may be arranged on the outer side of the guide (200B). The engaging projection (420B) may include a curved portion (251B) having a curvature (R) toward the center. Each engaging projection (420B) may include a curved portion (421B). The engaging projection (420B) may include an inclined portion (422B) on the outer surface to guide the engaging with the coupler (100B). The inclined portions (422B) may be provided on both sides of the engaging projection (250B). The inclined portions (422B) may be provided to be inclined toward the center of the tray (70B).

[0128] The joining groove (410B) of the tray (70B) can be provided between the joining projection (420B) and the adjacent joining projection (420B).

[0129] The coupler (100B) is provided so that the tray (70B) can be secured and coupled. The coupler (100B) is provided so that the center of the tray (70B) is guided.

[0130] The coupler (100B) may include a guide mounting portion (300B) corresponding to a guide (200B) provided at the center of the tray (70B). The guide mounting portion (300B) of the coupler (100B) may be provided at the center of the upper surface of the coupler (100B). The guide mounting portion (300B) of the coupler (100B) may be provided to correspond to be coupled to the guide (200B). The guide mounting portion (300B) may be provided to be coupled to a plurality of protrusions (211B). The guide mounting portion (300B) may include a plurality of mounting grooves (311B). The mounting grooves (311B) may be provided to correspond to a plurality of protrusions (211B). The anchoring groove (311B) may include a anchoring surface (312B) corresponding to the anchoring portion (212B) of the protrusion (211B). The anchoring surface (312B) may be formed to slope outward from the center.

[0131] The guide mounting portion (300B) of the coupler (100B) is provided with a plurality of mounting grooves (211B) that guide a plurality of projections (211b) when the tray (70B) is mounted on the coupler (100B), so that the tray (70B) and the coupler (100B) can be assembled.

[0132] The guide mounting portion (300B) may be provided to guide the center position of the tray (70B) for assembling the tray (70B) and the coupler (100B). The coupler (100B) may include a second coupling portion (500B) that is provided to be rotated and coupled with the tray (70B) in a pre-assembled state. The assembly operation of the second coupling portion (500B) and the first coupling portion (400B) of the tray (70B) is the same as in one embodiment.

[0133] The tray (70B) is first assembled by the guide (200B) at the center of the tray bottom (72) by the guide mounting portion (300B) of the coupler (100B). The center position of the tray (70B) can be assembled by the guide (200B) provided at the center of the tray bottom (72) and the guide mounting portion (300B) provided at the center of the coupler (100B).

[0134] When the tray (70B) is assembled and the tray (70B) is rotated, the first coupling portion (400B) of the tray (70B) can be coupled with the second coupling portion (500B) of the coupler (100B). By accurately seating and coupling the tray (70B) to the coupler (100B) through the assembly structure of the tray (70B) and the coupler (100B) as described above, factors that impede the rotation of the tray (70B) can be eliminated, and the rotation of the tray (70B) can be facilitated, so that the food on the tray (70B) can be evenly heated.

[0135] Fig. 19 is an exploded perspective view showing a tray and a coupler according to one embodiment, Fig. 20 is a perspective view showing the combination of a tray and a coupler according to one embodiment, Fig. 21 is a drawing showing an assembled state of a coupler and a tray according to one embodiment, and Fig. 22 is a cross-sectional view showing a state in which a tray is assembled to a coupler according to one embodiment. Hereinafter, descriptions of parts overlapping with the above descriptions are omitted.

[0136] As illustrated in FIGS. 19 to 22, the tray (70C) is provided so as to be coupled with the coupler (100C). The tray (70C) is provided so as to be seated on the coupler (100C). The tray (70C) can be rotatably mounted in the cooking chamber (41) by having a guide (200C) formed on the bottom surface (72C) of the tray and a first coupling portion (400C) seated on the coupler (100C) provided on the bottom surface (25) of the cooking chamber (41).

[0137] The guide (200C) may be provided at the center of the tray bottom surface (72B). The first coupling portion (400C) may include coupling protrusions (420C) that are spaced apart from each other in the circumferential direction on the outer side of the guide (200B). The coupling protrusions (420C) may be provided in multiple numbers. The first coupling portion (400C) may include a coupling groove (410C) formed by the coupling protrusions (420C). The coupling groove (410C) may be formed between the coupling protrusion (420C) and another coupling protrusion (420C) adjacent to the coupling protrusion (420C).

[0138] The guide (200C) of the tray (70C) may include a protrusion (211C) that is formed to protrude from the center of the tray (70C). The protrusion (211C) may be provided to protrude from the center of the bottom surface (72C) of the tray. The protrusion (211C) may include a cone shape. The protrusion (211C) may include a mounting portion (212C) that is formed to be inclined on the outer surface. The mounting portion (212C) may be provided so that the guide mounting portion (300C) of the coupler (100C) can be mounted thereon.

[0139] The engaging projection (420C) of the tray (70C) may include a curved portion (421C). The engaging projection (420C) may include an inclined portion (422C) on the outer surface to guide engagement with the coupler (100C). The inclined portion (422C) may be provided on both sides of the outer surface of the engaging projection (420C). The inclined portion (422C) may be provided to be inclined toward the center of the tray (70C).

[0140] The joining groove (410C) of the tray (70C) can be provided between the joining projection (420C) and the adjacent joining projection (420C).

[0141] The guide mounting portion (300C) of the coupler (100C) is provided so that the tray (70C) can be mounted and coupled. The coupler (100C) is provided so that the center of the tray (70C) is guided.

[0142] The coupler (100C) may include a guide mounting portion (300C) corresponding to a guide (200C) provided at the center of the tray (70C). The guide mounting portion (300C) may be provided at the center of the upper surface of the coupler (100C). The guide mounting portion (300C) of the coupler (100C) may be provided to correspond to be coupled to the guide (200C). The guide mounting portion (300C) may be provided to be coupled to a protrusion (211C). The guide mounting portion (300C) may include a mounting groove (311C). The mounting groove (311C) may be provided to correspond to the protrusion (211C). The mounting groove (311C) may include a mounting surface (312C) corresponding to the mounting portion (212C) of the protrusion (211C). The settling surface (312C) can be formed to be inclined toward the center.

[0143] The guide mounting portion (300C) of the coupler (100C) is provided so that when the tray (70C) is mounted on the coupler (100C), the projection (211C) is guided by the mounting groove (211C) to assemble the tray (70C) and the coupler (100C) and guide the center of the tray (70C).

[0144] The coupler (100C) may include a second coupling portion (500C) that is configured to be rotated and coupled with the tray (70C) in a pre-assembled state. The assembly operation of the second coupling portion (500C) and the first coupling portion (400C) of the tray (70C) is the same as in one embodiment.

[0145] The second coupling portion (500C) of the coupler (100C) can be formed to be smaller in size than the first coupling portion (400C) of the tray (70C) so that a gap (G) can be formed between it and the coupling protrusion (420C). The coupler (100C) can be formed to have a coupling body (500Ca) of the second coupling portion (500C) smaller in size than the coupling groove (410C) so that a gap (G) can be formed between it and the coupling protrusion (420C). The gap (G) between the second coupling portion (500C) of the coupler (100C) and the first coupling portion (400C) of the tray (70C) can facilitate the tray (70C) from being seated on the coupler (100C).

[0146] Fig. 23 is an exploded perspective view showing a tray and a coupler according to one embodiment, Fig. 24 is a perspective view showing the combination of a tray and a coupler according to one embodiment, Fig. 25 is a drawing showing an assembled state of a coupler and a tray according to one embodiment, and Fig. 26 is a cross-sectional view showing a state in which a tray is assembled to a coupler according to one embodiment. Hereinafter, descriptions of parts overlapping with the above descriptions are omitted.

[0147] As shown in FIGS. 23 to 26, the tray (70D) is provided so that it can be coupled with the coupler (100D). The tray (70D) is provided so that it can be seated with the coupler (100D).

[0148] The tray (70D) can be rotatably mounted by having a guide (200D) formed on the bottom surface (72) of the tray and a first coupling portion (400D) mounted on a coupler (100D) mounted on the bottom surface (25) of the cooking chamber (41).

[0149] The guide (200D) may be provided at the center of the tray bottom surface (72). The first coupling portion (400D) may include coupling protrusions (420D) that are spaced apart from each other in the circumferential direction on the outer side of the guide (200D). The coupling protrusions (420D) may be provided in multiple numbers. The first coupling portion (400D) may include a coupling groove (410D) formed by the coupling protrusions (420D). The coupling groove (410D) may be formed between the coupling protrusion (420D) and another coupling protrusion (420D) adjacent to the coupling protrusion (420D).

[0150] The guide (200D) of the tray (70D) may be provided at the center of the bottom surface (72D) of the tray. The first connecting portion (400D) may be formed by connecting protrusions (420D) spaced apart from each other in the circumferential direction on the outside of the guide (200D).

[0151] The engaging projection (420D) of the tray (70D) may be provided to protrude from the bottom surface (72) of the tray. The engaging projection (420D) may include a curved portion (421D) having a curvature (R) toward the center so as to form a circular guide (200D) at the center of the bottom surface (72) of the tray. The curved portion (421D) of the engaging projection (420D) may form at least a portion of the guide (200D). Each engaging projection (420D) may include a curved portion (421D).

[0152] The coupling protrusion (421D) may include an inclined portion (422D) on the outer surface to guide coupling with the coupler (100D). The inclined portion (422D) may be provided on the outer surface of the coupling protrusion (420D). The inclined portion (422D) may be provided to be inclined toward the center of the tray (70A).

[0153] The joining groove (410D) of the tray (70D) can be provided between the joining projection (420D) and the adjacent joining projection (420D).

[0154] The guide mounting portion (300D) and the second coupling portion (500D) of the coupler (100D) are provided so that the tray (70D) can be mounted and coupled to the coupler (100D). The coupler (100D) may be provided so that the center of the tray (70D) is guided.

[0155] The coupler (100D) may include a guide mounting portion (300D) corresponding to a guide (200D) provided at the center of the tray (70D). The guide mounting portion (300D) may be provided at the center of the upper surface of the coupler (100D). The guide mounting portion (300D) of the coupler (100D) may be provided correspondingly to be coupled to the guide (200D). The guide mounting portion (300D) may include an inclined surface (340D) formed to be inclined on an outer circumference. The inclined surface (340D) may include a first inclined surface (340D) formed around the outer circumference of the guide mounting portion (300D). The first inclined surface (340D) of the guide mounting portion (300D) may be provided to guide coupling of the first coupling portion (210D) of the tray (70D). The first inclined surface (341D) of the guide mounting portion (300D) can be formed to be inclined toward the center.

[0156] The guide mounting portion (300D) of the coupler (100D) is provided to guide the guide (200D) when the tray (70D) is mounted on the coupler (100D) so that the tray (70D) and the coupler (100D) are pre-assembled, and to guide the center of the tray (70D). The guide mounting portion (300D) may include an inclined surface (340D) formed to be inclined on the outer circumference. The inclined surface (340D) may be provided on the outer edge of the guide mounting portion (300D). The inclined surface (340D) may be provided to guide the coupling of the guide mounting portion (300D) and the guide (200D).

[0157] The coupler (100D) may include a second coupling portion (500D) that is arranged to be rotated and coupled with the tray (70D) in a pre-assembled state. The second coupling portion (500D) is arranged on the outside of the guide mounting portion (300D) and is arranged to be rotated and coupled to the first coupling portion (400D) of the tray (70D) while the guide mounting portion (300D) is mounted on the guide (200D).

[0158] The second coupling portion (500D) may be arranged radially from the guide mounting portion (300D). The second coupling portion (500D) may include three coupling bodies (500Da). The coupling bodies (500Da) may be provided to correspond to the first coupling portion (400D) of the tray (70D). The coupling bodies (500Da) may be provided to correspond to the coupling groove (410D) of the tray (70D). The coupling bodies (500Da) may include an inclined surface (540D) formed to be inclined on the outer circumference. The inclined surface (540D) may be formed around the outer circumference of the coupling body (500Da). The inclined surface (540D) may be provided on the outer edge of the coupling body (500Da). The inclined surface (540D) can be provided to guide the connection with the first connection part (400D) of the tray (70D).

[0159] The assembly operation of the second joint (500D) and the first joint (400D) of the tray (70D) by rotation of the tray (70D) is the same as in one embodiment.

[0160] Fig. 27 is an exploded perspective view showing a tray, a coupler, and a roller assembly according to one embodiment, Fig. 28 is a cross-sectional view showing a joint assembly of a tray, a coupler, and a roller according to one embodiment illustrated in Fig. 27, and Fig. 29 is an enlarged view of a portion of Fig. 28, which is a drawing showing a coupled state of a roller and a tray according to one embodiment. Hereinafter, descriptions of parts overlapping with the above descriptions are omitted.

[0161] As illustrated in FIGS. 27 to 29, the tray (70) can be coupled to the coupler (100) so as to be rotatable within the cooking chamber (41). The coupler (100) can be connected to the rotational shaft (62) of the motor (61) to transmit rotational driving force to the tray (70). The tray (70) can include a coupling portion (200) provided at the center of the bottom surface (72) of the tray so as to be coupled to the coupler (100).

[0162] The tray (70) can be rotatably mounted in the cooking chamber (41) by having the connecting portion (200) provided on the bottom surface (72) of the tray be seated on the coupler (100) provided on the bottom surface (25) of the cooking chamber (41).

[0163] The tray (70) may be provided in a circular shape. The tray (70) may include an upper surface (71) of the tray facing the cooking chamber (41) and a lower surface (72) of the tray facing the bottom surface (25) of the cooking chamber (41).

[0164] The upper surface (71) of the tray is provided so that food can be placed on it. A connecting portion (200) is provided on the lower surface (72) of the tray so that a coupler (100) can be connected to it. In addition, a roller assembly (80) that supports the tray (70) so that it can rotate from the bottom surface (25) of the cooking chamber (41) may be provided on the lower surface (72).

[0165] The roller assembly (80) may include a ring (81), a roller mounting portion (83) provided on the ring (81), and a roller (2) rotatably mounted on the roller mounting portion (83).

[0166] The roller assembly (80) can be provided to support the lower part of the tray (70) in the tray receiving portion (26) provided on the bottom surface (25) of the cooking chamber (41).

[0167] When the tray (70) is coupled to the coupler (100), the roller assembly (80) for supporting the lower part of the tray (70) can be positioned in the tray receiving portion (26). The central position of the tray (70) can be guided through the roller assembly (80). A center guide (90) can be included to guide the central position of the tray (70).

[0168] The cooking appliance (1) may include a center guide (90) that guides the tray (70) to the center of the cooking chamber (41) by a roller (82). The center guide (90) may be composed of the tray (70) and the roller (82).

[0169] The center guide (90) may include a guide rib (91) that is formed to protrude from the bottom surface (72) of the tray. The guide rib (91) that is formed to protrude so that the position of the tray (70) is guided by the roller (82) may be provided on the bottom surface (72). The guide rib (91) may be formed to have a size corresponding to the ring (81) of the roller assembly (80). The guide rib (91) may include a roller guide (92) that directly contacts at least a portion of the roller (82). The roller guide (92) may be formed to be inclined on the outside of the guide rib (91). The roller guide (82) may be formed to be inclined from the center toward the outside so as to guide the center of the tray (70).

[0170] The center guide (90) may include a roller slope (82b) provided on the roller (82) so as to contact the roller guide (92) of the tray (70). The roller slope (82b) may be provided to be inclined on at least a portion of the roller (82). The roller slope (82b) may be provided to have an incline on at least a portion of the roller (82). The roller slope (82b) of the roller (82) may contact the roller guide (92) of the tray (70) to guide the position of the tray (70) to a central position.

[0171] The roller (82) includes a support surface (82a) to be supported on the bottom surface (25) of the cooking chamber (41). The support surface (82a) of the roller (82) may be provided as a surface parallel to the bottom surface (25) so that the roller (82) can be supported on the bottom surface (25). The roller slope surface (82b) of the roller (82) may be provided on the inner side of the support surface (82a). The roller slope surface (82b) of the roller (82) may be formed in a more central direction than the support surface (82a). The roller (82) may be provided so as to be rotatably supported on the bottom of the cooking chamber (41) by the support surface (82a). When the roller guide (92) of the tray (70) comes into contact with the roller slope surface (82b) of the roller (82) and rotates, the tray (70) can be guided to the central position.

[0172] When the tray (70) is moved to the central position by the roller (82) inside the cooking chamber (41), the joint part (200) of the tray (70), the guide mounting part (300) of the coupler (100), and the second joint part (500) can be assembled.

[0173] According to one embodiment, a cooking appliance (1) comprises: a housing (10) including a cooking chamber (41); a tray (70) disposed in the cooking chamber to support food to be heated, the tray including a guide (200) provided at a bottom center position, and a first coupling portion (400) provided circumferentially on the outside of the guide; a coupler (100) provided at a lower portion of the cooking chamber and connected to a motor (61) that generates a driving force for rotating the tray, wherein the coupler comprises a guide mounting portion (300) provided for mounting the guide (200) of the tray, and a second coupling portion (500) provided on the outside of the guide mounting portion (300) such that the guide (200) rotates while mounted on the guide mounting portion and is coupled to the first coupling portion (400). According to the present disclosure, the tray can be easily mounted on the coupler.

[0174] In addition, the center of the tray can be assembled and the assembled tray can be rotated to be seated on the coupler, thereby improving user convenience.

[0175] In addition, by accurately placing the tray on the coupler and joining it, factors that impede the rotation of the tray can be removed, and the rotation of the tray can be facilitated, so that the food on the tray can be evenly heated.

[0176] The first coupling portion (400) includes coupling protrusions (420) spaced apart from each other in the circumferential direction, and coupling grooves (410) formed between one coupling protrusion among the coupling protrusions (420) and another adjacent coupling protrusion. The guide mounting portion (300) is provided to protrude in the tray direction more than the second coupling portion (500). The second coupling portion (500) includes a plurality of coupling bodies (500a) arranged radially, and each coupling body (500a) includes a first surface (501) in the same direction as the guide mounting portion (300), a second surface (502) opposite to the first surface (501), and a third surface (503) connecting the first surface (501) and the second surface (502). At least a portion of the first surface (501) and the third surface (503) of the above-described coupling body (500a) includes an inclined surface (540) formed to be inclined. Each of the above-described coupling protrusions (420) includes an inclined portion (422) having an incline corresponding to the inclined surface (540) of the above-described coupling body (500a). Each of the above-described coupling protrusions (420) includes a curved portion (421) corresponding to the guide mounting portion so that the guide mounting portion is coupled thereto and guides the center of the tray.

[0177] For example, the center of the tray can be assembled, and the assembled tray can be rotated to be seated on the coupler, thereby improving user convenience.

[0178] In addition, by accurately placing the tray on the coupler and joining it, factors that impede the rotation of the tray can be removed, and the rotation of the tray can be facilitated, so that the food on the tray can be evenly heated.

[0179] The second coupling portion (500) includes a plurality of guide grooves (510A) arranged radially, and the guide grooves (510A) are coupled to the coupling protrusions (420A). The guide grooves (510A) include an inclined surface (511A) that is formed to be inclined. The guide (200) includes a protrusion (210B) that is formed to protrude from the center of the tray, and the protrusion (210B) includes a mounting portion (212B) whose outer surface is formed to be inclined. The guide mounting portion (300) includes a mounting groove (310B) corresponding to the protrusion (210B), and the mounting groove (310B) includes a mounting surface (312B) corresponding to the mounting portion (212B). The above protrusions (210B) are provided in multiple numbers, and the above-mentioned mounting portions (212B) are formed to be inclined outward from the center of the above-mentioned protrusions (210B). The above-mentioned mounting grooves (310B) are provided in multiple numbers, and the above-mentioned mounting surfaces (312B) are formed to be inclined outward from the center of the above-mentioned mounting grooves (311B).

[0180] For example, the center of the tray can be assembled, and the assembled tray can be rotated to be seated on the coupler, thereby improving user convenience.

[0181] A roller assembly (80) including a circular ring (81) for rotatably supporting the tray (70) and a roller (82) mounted on the ring (81), wherein the tray (70) further includes a center guide (90) provided to guide the center of the tray (70) by the roller (82). The roller (82) includes a support surface (82a) for rotatably supporting the cooking chamber (41) and a roller inclined surface (82b) adjacent to the support surface (82a) and having an incline. The center guide (900) includes a guide rib (91) formed on at least a portion of the bottom surface (72) of the tray (70) and formed inclined so as to come into contact with the roller inclined surface (82b).

[0182] For example, the tray can be easily seated on the coupler.

[0183] In addition, the center of the tray can be assembled and the assembled tray can be rotated to be seated on the coupler, thereby improving user convenience.

[0184] In a method for assembling a tray (70) according to one embodiment to a coupler (100), the tray (70) includes a guide (200) provided at the center of a bottom surface (72), and a first coupling portion (400) arranged circumferentially and spaced apart from the guide, and the coupler (100) has a guide mounting portion (300) provided at the center so as to protrude so that the guide (200) is mounted, and a second coupling portion is provided on the outside of the guide mounting portion so as to correspond to the first coupling portion and spaced apart from the circumferential portion, such that the guide is rotated while mounted on the guide mounting portion, and the second coupling portion is assembled to the first coupling portion. According to the present disclosure, the tray can be easily mounted on the coupler.

[0185] In addition, the center of the tray can be assembled and the assembled tray can be rotated to be seated on the coupler, thereby improving user convenience.

[0186] In addition, by accurately placing the tray on the coupler and joining it, factors that impede the rotation of the tray can be removed, and the rotation of the tray can be facilitated, so that the food on the tray can be evenly heated.

[0187] The first coupling portion (400) includes coupling protrusions (420) spaced apart from each other around the guide and coupling grooves (410) formed by the coupling protrusions, and the second coupling portion (500) includes coupling bodies (500a) provided around the guide mounting portion to be coupled to the coupling grooves. Each of the coupling protrusions (420) includes a curved portion (421) corresponding to the guide so that the guide is coupled thereto and guides the center of the tray. The tray (70) includes a circular ring (81) to rotatably support the tray (70), and a roller assembly (80) including a roller (82) mounted on the ring (81), and the tray (70) further includes a center guide (90) provided to guide the center of the tray (70) by the roller (82).

[0188] In describing the cooking appliance with reference to the attached drawings above, specific shapes and directions have been mainly described, but it should be understood that various modifications and changes can be made by a person skilled in the art, and such modifications and changes should be interpreted as being included in the scope of the disclosed invention.

Claims

1. A housing including a kitchen; A tray that is arranged in the above cooking chamber and supports food to be heated, and includes a guide provided at the center position of the bottom surface, and a first connecting part provided in a circumferential direction on the outside of the guide; A cooking appliance comprising: a coupler provided at the lower portion of the cooking chamber and connected to a motor that generates a driving force for rotating the tray, the coupler including a guide mounting portion provided for mounting the guide of the tray; and a second coupling portion provided on the outside of the guide mounting portion so that the guide rotates while mounted on the guide mounting portion and is coupled to the first coupling portion.

2. In paragraph 1, The above first connecting part is, Connecting projections spaced apart in the circumferential direction, A cooking appliance comprising connecting grooves formed between one of the connecting projections and another adjacent connecting projection.

3. In paragraph 2, A cooking appliance in which the above guide mounting portion is provided to protrude in the direction of the tray more than the above second joining portion.

4. In paragraph 3, The second coupling portion includes a plurality of coupling bodies arranged radially, A cooking appliance in which each of the above-mentioned joint bodies includes a first surface in the same direction as the guide mounting portion, a second surface opposite to the first surface, and a third surface connecting the first surface and the second surface.

5. In paragraph 4, A cooking appliance including an inclined surface in which at least a portion of the first surface and the third surface of the above-mentioned joint body are formed to be inclined.

6. In paragraph 2, A cooking appliance in which each of the above-mentioned joining projections includes an inclined portion having an incline corresponding to the inclined surface of the joining body.

7. In paragraph 6, A cooking appliance in which each of the above-mentioned joining projections includes a curved portion corresponding to the guide mounting portion so that the guide mounting portion is combined and guides the center of the tray.

8. In paragraph 7, The above second connecting part is, It comprises a plurality of guide grooves arranged radially, A cooking appliance in which the above guide homes are connected to the above joining projections.

9. In paragraph 8, A cooking appliance in which the above guide homes include inclined surfaces formed at an angle.

10. In paragraph 1, The above guide, Including a protrusion formed protruding at the center of the above tray, A cooking appliance having a mounting portion formed with an inclined outer surface, wherein the projection is above.

11. In paragraph 10, The above guide mounting part is, Including a fixing groove corresponding to the above protrusion, A cooking appliance in which the above-mentioned fixing groove includes a fixing surface corresponding to the above-mentioned fixing portion.

12. In paragraph 11, The above protrusions are provided in multiples, A cooking appliance in which the above-mentioned fixing portion is formed to be inclined in an outward direction from the center of the above-mentioned protrusions.

13. In paragraph 12, The above-mentioned settling grooves are provided in multiple numbers, A cooking appliance in which the above-mentioned settling surface is formed to be inclined in an outward direction from the center of the above-mentioned settling grooves.

14. In paragraph 1, It includes a roller assembly including a circular ring (81) to rotatably support the above tray and a roller mounted on the ring (81). The above tray, A cooking appliance further comprising a center guide provided to guide the center of the tray by the roller.

15. In paragraph 14, The above rollers, A support surface that can be rotated and supported in the above cooking chamber, A cooking appliance comprising a roller slope having an incline and adjacent to the support surface.

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