WO2023113244A1 - Cooking device and method for controlling same - Google Patents

Abstract

The disclosed invention provides: a cooking device which can effectively remove residue inside a cooking chamber by continuously steam cleaning and heat cleaning, the residue being generated during the cooking process; and a method for controlling same. The cooking device according to an embodiment comprises: a cooking chamber; a first heating source provided under the cooking chamber and comprising a magnetron for generating high frequency waves; a second heating source provided in the upper area of the cooking chamber and comprising at least one heater; a protection member provided under the second heating source; and a controller for, in a cleaning mode, operating the first heating source for a first time period, stopping the operation of the first heating source when the first time period elapses, and operating the second heating source for a second time period after the operation of the first heating source is stopped.

Description

Cooking device and its control method

The disclosed invention relates to a cooking appliance capable of automatically cleaning the inside of a cooking chamber and a control method thereof.

A cooking appliance is a device for heating and cooking a cooking object such as food, and refers to a device capable of providing various functions related to cooking, such as heating, defrosting, drying, and sterilizing the cooking object. Such cooking appliances include, for example, an oven such as a gas oven or an electric oven, a microwave heating device (hereinafter referred to as a microwave oven), a gas range, an electric range, a gas grill, or an electric grill.

In general, an oven is an appliance that directly transfers heat to food through a heating source that generates heat such as a heater or heats the inside of a cooking chamber to cook food, and a microwave oven uses high frequency as a heating source to disturb the molecular arrangement of food. It is an appliance that cooks food by frictional heat between molecules generated along the way.

In addition, recently, a cooking appliance capable of simultaneously cooking different types of food by mounting two or more different types of heating sources has been released.

The disclosed invention provides a cooking appliance capable of effectively removing contaminants inside a cooking chamber generated during a cooking process by continuously performing steam cleaning using a magnetron and heating cleaning using a heater, and a control method thereof.

A cooking appliance according to an embodiment includes a cooking chamber; a first heating source provided under the cooking chamber and including a magnetron generating high frequency; a second heating source provided in an upper region of the cooking chamber and including at least one heater; a protection member provided under the second heating source; and operating the first heating source for a first time in the cleaning mode, stopping the operation of the first heating source when the first time period has elapsed, and stopping the operation of the first heating source, and then the second heating source. A controller for operating the heating source for a second time period; includes.

The cooking appliance may further include a reflective member provided above the second heat source and wrapped around at least a portion of the second heat source.

In the preceding paragraphs, the cooking appliance includes: a display; and a speaker, wherein the controller, in the cleaning mode, operates at least one of the display and the speaker to output a guide message for guiding the introduction of water into the cooking chamber before operating the first heating source. You can control it.

In the above paragraphs, the controller may operate the second heating source after a lapse of a third time period after the operation of the first heating source is stopped in the cleaning mode.

In the above paragraphs, the controller outputs a guide message for guiding cleaning of the inside of the cooking chamber, in the cleaning mode, before operating the second heating source after the operation of the first heating source is stopped. For this purpose, at least one of the display or the speaker may be controlled.

In the above paragraphs, the controller stops the operation of the second heating source when the second time elapses after operating the second heating source in the cleaning mode, and guides cleaning of the inside of the cooking chamber. At least one of the display or the speaker may be controlled to output a guide message.

In the above paragraphs, the controller may operate the first heating source to generate steam in the cooking chamber in the cleaning mode.

In the above paragraphs, the controller may, in the cleaning mode, operate the second heating source to carbonize contaminants attached to the protection member or the reflective member.

In the foregoing paragraphs, the cleaning mode includes a first cleaning mode and a second cleaning mode, and the controller operates the first heating source for a first time in the first cleaning mode, After the first time has elapsed, the operation of the first heating source is stopped, and after the operation of the first heating source is stopped, the second heating source is operated for a second time, and in the second cleaning mode, A second heating source may be operated for the second time period.

In the above paragraphs, in the cleaning mode, when the operation of the first heating source is stopped, the controller outputs a guide message for receiving a selection of whether or not to operate the second heating source among the display or the speaker. When at least one is controlled and an operation of the second heating source is selected through an input device, the second heating source may be operated for the second time period.

A method of controlling a cooking appliance according to an embodiment includes a cooking chamber, a first heating source provided in a lower part of the cooking chamber and including a magnetron generating a high frequency, provided in an upper region of the cooking chamber, and including at least one heater. A control method of a cooking appliance including a second heating source and a protective member provided under the second heating source, comprising: determining whether a cleaning mode is entered; operating the first heating source for a first time when entering the cleaning mode; stopping the operation of the first heating source after the first time elapses; and operating the second heating source for a second time after the operation of the first heating source is stopped.

The cooking appliance may further include a reflective member provided above the second heat source and wrapped around at least a portion of the second heat source, wherein the second heat source is operated for a second time. The step may include heating at least one of the protection member and the reflective member.

In the foregoing paragraphs, the method includes, when entering the cleaning mode, outputting a guide message for guiding the introduction of water into the cooking chamber through a display or a speaker before operating the first heating source. can include more.

In the preceding paragraphs, the step of operating the second heating source for the second time period includes operating the second heating source after a lapse of a third time period after the operation of the first heating source is stopped. can do.

In the above paragraphs, the method, after the operation of the first heating source is stopped and before operating the second heating source, sends a guide message for guiding cleaning of the inside of the cooking chamber to at least one of the display or the speaker. Outputting through one; may further include.

In the above paragraphs, the method, when the second time period elapses after operating the second heating source, stops the operation of the second heating source and sends a guide message for guiding cleaning of the inside of the cooking chamber. It may further include; outputting through at least one of a display and the speaker.

In the above paragraphs, operating the first heating source for the first time may include operating the first heating source to generate steam inside the cooking chamber.

In the above paragraphs, operating the second heating source for the second time period may include operating the second heating source to carbonize contaminants attached to the protective member or the reflective member. .

In the above paragraphs, the cleaning mode includes a first cleaning mode and a second cleaning mode, and when entering the first cleaning mode, the first heating source is operated for a first time, and the second cleaning mode is operated. When entering the cleaning mode, the second heating source may be operated for the second time period.

In the foregoing paragraphs, the method includes, when the operation of the first heating source is stopped, outputting a guide message for receiving a selection of whether the second heating source is operating through at least one of the display and the speaker. and operating the second heating source for the second time period includes operating the second heating source for the second time period when the operation of the second heating source is selected through an input device. can include

According to the cooking appliance and its control method according to one aspect of the disclosed invention, by continuously performing steam cleaning using a magnetron and heating cleaning using a heater, it is possible to effectively remove contaminants inside a cooking chamber generated during a cooking process.

1 is a perspective view of a cooking appliance according to an exemplary embodiment;

2 is a diagram illustrating some internal components of a cooking appliance according to an exemplary embodiment.

3 is a cross-sectional view of a cooking appliance according to an embodiment.

4 is a view showing an example of a plurality of heaters and a shelf of a cooking appliance according to an embodiment.

5 is a perspective view illustrating an example of a protection member of a cooking appliance according to an exemplary embodiment;

6 is a block diagram illustrating an operation of a cooking appliance according to an exemplary embodiment.

7 is a flowchart illustrating a method of controlling a cooking appliance according to an exemplary embodiment.

8 is a flowchart illustrating an operation of outputting a guide message to a user after the cooking appliance enters a cleaning mode in the method of controlling a cooking appliance according to an exemplary embodiment.

9 to 13 are diagrams illustrating examples of guide messages output from the cooking device in the cooking device and the control method of the cooking device according to an embodiment.

14 is a flowchart illustrating another example of cleaning the inside of a cooking chamber in the method of controlling a cooking appliance according to an embodiment.

Like reference numbers designate like elements throughout the specification. This specification does not describe all elements of the embodiments, and general content or overlapping content between the embodiments in the technical field to which the present invention belongs is omitted. The term 'unit, module, member, or block' used in the specification may be implemented as software or hardware, and according to embodiments, a plurality of 'units, modules, members, or blocks' may be implemented as one component, It is also possible that one 'part, module, member, block' includes a plurality of components.

Throughout the specification, when a part is said to be "connected" to another part, this includes not only the case where it is directly connected but also the case where it is indirectly connected to other components, and the indirect connection is through a wireless communication network. It includes being connected or being electrically connected by wiring, soldering, and the like.

In addition, when a certain component is said to "include", this means that it may further include other components without excluding other components unless otherwise stated.

Throughout the specification, when a member is said to be located “on” another member, this includes not only a case where a member is in contact with another member, but also a case where another member exists between the two members.

Throughout the specification, when a component transmits or transmits a signal or data to another component, unless otherwise stated, another component exists between the corresponding component and the other component, and this component It is not excluded that transmission or transmission via

Throughout the specification, expressions of ordinal numbers such as "first" and "second" are used to distinguish a plurality of components from each other, and the ordinal numbers used indicate the order of arrangement between components, manufacturing order, or importance. It is not.

Expressions in the singular number include plural expressions unless the context clearly dictates otherwise.

In each step, the identification code is used to refer to each step, and this identification code does not limit the order of each step. It can be.

When an expression such as "at least one" is written after a list of elements, the combination of elements may be modified. For example, the expression "at least one of a, b, or c" means only a, only b, only c, both a and b, both a and c, both b and c, or both a, b, and c. It can be interpreted as including.

Hereinafter, embodiments of a cooking appliance and a control method thereof according to an aspect will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a cooking appliance according to an embodiment, FIG. 2 is a view showing some components of the inside of the cooking appliance according to an embodiment, and FIG. 3 is a cross-sectional view of the cooking appliance according to an embodiment.

1 to 3 illustrate that the cooking appliance 1 is disposed on a three-dimensional space defined by the X-axis, Y-axis, and Z-axis. Here, the X-axis, Y-axis, and Z-axis are defined based on the cooking appliance 1, and the X-axis corresponds to the front and rear directions of the cooking appliance 1, and the Y-axis corresponds to the lateral direction (left and right direction) of the cooking appliance 1. , and the Z-axis corresponds to the height direction of the cooking appliance 1 .

1 to 3 together, the cooking appliance 1 according to one embodiment includes a housing 10 forming an exterior and a cooking chamber 11 provided inside the housing 10 and in which a cooking object is disposed. .

In addition, the cooking appliance 1 may include an inner housing 12 disposed inside the housing 10 and forming a cooking chamber 11 . At least a portion of the inner housing 12 may be made of a stainless material that is easy to clean.

A predetermined separation space 15 may be formed between the inner housing 12 and the housing 10 . The housing 10 and the inner housing 12 may be provided to open in the +X direction, which is the forward direction of the cooking appliance 1 . The cooking chamber 11 may be provided in a substantially rectangular parallelepiped shape having a long side in the +Y direction orthogonal to the left and right directions with respect to the first direction.

The cooking appliance 1 may include a machine room 13 formed inside the housing 10 and disposed below the cooking chamber 11 . Inside the machine room 13, various electrical components that drive the cooking appliance 1 may be disposed.

The cooking appliance 1 may include a housing 10 formed in a first direction and a door 20 provided to open and close an opening of the inner housing 12 . When the door 20 is opened, the user may put a cooking object into the cooking chamber 11 through the opening of the inner housing 12 .

An input device 530 to which a user's control command for the cooking appliance 1 is input may be provided on the door 20 . For example, the input device 530 may be provided on an outer surface of the door 20 . In this example, the inner surface of the door 20 may be a surface facing the inside of the cooking chamber 11 when the door 20 is closed, and the outer surface of the door 20 may be a surface facing the opposite direction of the inner surface.

A display 510 may also be provided on the outer surface of the door 20 . The display 510 may display information about the current state of the cooking appliance 1, selectable functions or menus, and the like. Also, as will be described later, when the cooking appliance 1 operates in the cleaning mode, various guidance messages provided to the user may be displayed on the display 510 .

When all or part of the input device 530 is implemented as a touch pad and disposed in front of the display 510, the display 510 and the input device 530 may implement a touch screen.

In the example of FIG. 1 , the case where the input device 530 and the display 510 are provided on the door 20 is taken as an example, but the embodiment of the cooking appliance 1 is not limited thereto. The display 510 may be provided at any location that can be seen by the user, and the input device 530 may be provided at any location that can be manipulated by the user.

The door 20 may include a transparent member 22 provided so that a user can observe the inside of the cooking chamber 11 when the door 20 is closed.

The cooking appliance 1 may include a shelf 30 mounted inside the cooking chamber 11 and provided to allow a user to place a cooking object. The shelf 30 may be provided to be separable from the inside of the cooking chamber 11 .

The cooking chamber 11 may include support portions 11c formed on both sides of the cooking chamber 11 so that the shelf 30 is placed between the upper and lower surfaces 11a and 11b of the cooking chamber 11 .

A plurality of support units 11c may be provided in a third direction (C) orthogonal to the vertical direction with respect to the first or second direction so that the shelf 30 is mounted at various heights.

The shelf 30 may include a body 31 and a cooking surface 32 on which a cooking object may be placed. The cooking surface 32 may be provided to face the upper surface 11a of the cooking chamber 11 when the shelf 30 is mounted thereon.

The cooking appliance 1 may include a heating source 100 that provides heat to the inside of the cooking chamber 11 to cook an object to be cooked.

The heating source 100 may be provided to cook the cooking object by providing heat to the cooking object positioned on the shelf 30 . In addition, the cooking target may be located on the lower surface 11b of the cooking chamber 11 without the shelf 30 . Even at this time, the heating source 100 may provide heat to the cooking target located on the lower surface 11b.

Also, although not shown in the drawings, the cooking appliance 1 may include a convection fan to promote circulation of air heated by the heating source 100 .

A conventional microwave-type cooking appliance is prepared to cook a cooking object through a single magnetron. At this time, a problem arises in that high-frequency waves are not evenly transmitted to all parts of the cooking object according to the distribution or content of moisture in the cooking object.

In addition to the magnetron, the cooking appliance 1 according to an embodiment is equipped with a heater capable of transferring heat to the entire cooking object, thereby solving this problem.

Accordingly, the heating source 100 may include the second heating source 200 disposed in the upper region of the cooking chamber 11 and the first heating source 300 disposed in the lower portion of the cooking chamber 11 .

The first heating source 300 may include a magnetron 310 generating high frequency waves. The high frequency generated from the magnetron 310 may be radiated into the inside of the cooking object so that the inside of the cooking object is cooked by frictional heat between molecules generated by repeatedly changing the molecular arrangement of moisture contained in the cooking object.

The magnetron 310 may be disposed in the machine room 13 . The first heating source 300 oscillates high-frequency waves from the machine chamber 13 toward the lower surface 11b of the cooking chamber 11, and the high-frequency waves may pass through the lower surface 11b and be irradiated into the cooking chamber 11.

The first heating source 300 may include a stirrer 320 provided to mix high frequency waves oscillated by the magnetron 310 and radiate them uniformly to the cooking chamber 11 .

The stirrer 320 may be provided in a circular shape having a cutout. The stirrer 320 may be provided to radiate high frequency waves in various directions through rotation so as to reach the inside of the cooking chamber 11 as a whole.

The stirrer 320 may be provided to have a diameter length d equal to or greater than a predetermined length so as to evenly mix the high frequencies and uniformly radiate the high frequencies into the cooking chamber 11 .

When the stirrer 320 has a diameter length d greater than a predetermined length, it is possible to easily mix high frequencies oscillated by the magnetron 310 . For example, the stirrer 320 may have a diameter length d of 150 mm or more when the capacity of the cooking chamber 11 is approximately 20L to 30L.

As described above, the stirrer 320 may be provided in a circular shape. For example, the circumference of the stirrer 320 may be provided in a ring shape that is not cut. As at least a portion of the stirrer 320 is cut and rotated, the high frequency passing through the stirrer 320 is mixed. The circumference of the stirrer 320 is provided in a ring shape, and the high frequency is more uniformly radiated into the cooking chamber 11 can do.

The second heating source 200 may include a plurality of heaters 210 , 220 , 230 , and 240 generating radiant heat. The plurality of heaters 210 , 220 , 230 , and 240 may radiate heat generated by the heaters 210 , 220 , 230 , and 240 to directly transfer the heat to the cooking target. For example, the plurality of heaters 210 , 220 , 230 , and 240 may include quartz heaters or ceramic heaters.

The cooking appliance 1 according to an embodiment may include a heating unit 33 disposed on the shelf 30 so that heat is transferred to the lower side of the cooking object during cooking. The heating unit 33 may be disposed on the opposite side of the cooking surface 32 in the main body 31 of the shelf 30 . The heating unit 33 may be provided to face the lower surface 11b of the cooking chamber 11 when the shelf 30 is mounted in the cooking chamber 11 .

The heating unit 33 may generate heat by absorbing high frequency waves generated from the magnetron 310 . The high frequency emitted from the magnetron 310 facing the heating unit 33 is absorbed by the heating unit 33, and the heating unit 33 may generate heat by the absorbed high frequency.

Heat generated by the heating unit 33 may be transferred to the cooking surface 32 through the main body 31 of the shelf 30 . That is, while heat generated from the heating unit 33 is conducted to the cooking surface 32 , heat may be supplied to the lower side of the cooking object positioned on the cooking surface 32 .

The heating unit 33 may be formed of a ferrite material to absorb high frequencies. However, it is not limited thereto, and a material capable of generating heat by high frequency may be mixed with a ceramic or the like to form the heating part 33 .

Accordingly, even if the user does not additionally turn over the cooking object, heat may be supplied in the vertical direction of the cooking object, and thus cooking may be efficiently performed.

The shelf 30 may be provided to partition the inner area of the cooking chamber 11 . The shelf 30 may partition the interior of the cooking chamber 11 into a first cooking area 11d and a second cooking area 11e in a vertical direction (Z-axis direction). The first cooking area 11d is an area formed above the shelf 30, and the second cooking area 11e is an area formed below the shelf 30.

When the shelf 30 is mounted inside the cooking chamber 11, the cooking target disposed in the first cooking area 11d, that is, the cooking target disposed on the shelf 30, is disposed on the first heating source 300 and the second heating source 300. It can be heated and cooked by the heating source 200 . A cooking object disposed in the second cooking area 11e, that is, a cooking object disposed on the lower surface 11b of the cooking chamber 11 may be heated and cooked by the first heat source 300 .

Therefore, when the internal space of the cooking chamber 11 is partitioned by the shelf 30, cooking objects cooked by different cooking methods can be simultaneously cooked in the cooking chamber 11.

For example, the area of the shelf 30 on the XY plane may correspond to the area of the cooking chamber 11 on the XY plane. Accordingly, it is possible to partially block heat generated by the second heating source 200 in the first cooking area 11d from being transferred to the second cooking area 11e.

In addition, it is possible to partially block the movement of the high frequency oscillated in the second cooking area 11e to the first area 11d.

Accordingly, independent cooking may be performed in the first cooking area 11d and the second cooking area 11e.

On the other hand, as in the example, when the cooking appliance 1 has a rectangular parallelepiped cooking chamber 11 having a long side 11L in the Y-axis direction, a plurality of pluralities arranged along the direction of the long side 11L of the cooking chamber 11 may include a heater of

When a plurality of heaters are disposed on the upper surface 11a of the cooking chamber 11 and provide heat of different temperatures, each heater provides heat at a position corresponding to each heater along the Y-axis direction inside the cooking chamber 11 The temperature of the heat corresponding to the heat to be applied may be provided. In detail, regions to which heat of different temperatures are provided may be partitioned on the cooking surface 32 of the shelf 30 .

Accordingly, even if a plurality of cooking objects having different cooking temperatures are put into the cooking chamber at the same time, when each cooking object is disposed in a plurality of regions of the cooking surface 32 partitioned by a temperature difference, each cooking according to the different cooking temperatures. Objects can be cooked. That is, when each cooking object is positioned in a different region, each cooking object may be cooked at a different temperature.

4 is a view showing an example of a plurality of heaters and a shelf of a cooking appliance according to an embodiment.

As shown in FIG. 4, the plurality of heaters 210, 220, 230, and 240 are provided to include long axes 200L extending in the X-axis direction, respectively, and each of the heaters 210, 220, 230, and 240 has a long side ( 11L) and may be spaced apart from each other along the corresponding Y-axis direction.

For example, the plurality of heaters 210, 220, 230, and 240 may include four first heaters 210, second heaters 220, third heaters 230, and fourth heaters 240, but the cooking appliance ( The embodiment of 1) is not limited thereto, and may include only the first heater 210 and the second heater 220, or may include more heaters than the four heaters 210, 220, 230, and 240.

Based on the center line G of the cooking surface 32 in the X-axis direction, the first heater 210 may be disposed on one side and the second heater 220 may be disposed on the opposite side. The third heater 230 may be disposed on one side adjacent to the first heater 210 and the fourth heater 240 may be disposed on the opposite side adjacent to the second heater 220 . That is, the third heater 230, the first heater 210, the second heater 220, and the fourth heater 240 may be disposed in the order toward the +Y direction.

The first heater 210 and the third heater 230 may generate heat having the same temperature as each other. Also, the second heater 220 and the fourth heater 240 may generate heat having the same temperature as each other.

The first and third heaters 210 and 230 and the second and fourth heaters 220 and 240 may generate heat having different temperatures. That is, based on the center line (G), the temperature generated from one side of the center line (G) and the temperature generated from the opposite side may be provided to be different from each other.

The shelf 30 may include a first cooking surface 34 and a second cooking surface 35 formed on the cooking surface 32 . The first cooking surface 34 and the second cooking surface 35 may be partitioned along the Y-axis direction.

Based on the center line G, the first cooking surface 34 may be formed on one side and the second cooking surface 35 may be formed on the opposite side. In addition, the first cooking area 11d includes an area 11d-1 corresponding to the first cooking surface 34 and an area 11d-2 corresponding to the second cooking surface 35 based on the center line G. can be distinguished.

The first cooking surface 34 may be disposed at a position corresponding to the first and third heaters 210 and 230 in the Y-axis direction. The second cooking surface 35 may be disposed at a position corresponding to the second and fourth heaters 220 and 240 in the Y-axis direction.

Since heat generated by the first and third heaters 210 and 230 and the second and fourth heaters 240 are different, the temperatures of the heat transferred to the first cooking surface 34 and the second cooking surface 35 are different. Accordingly, it is possible to place cooking objects having different cooking temperatures on the first cooking surface 34 and the second cooking surface 35 and simultaneously cook in one cooking chamber 11 .

In addition, since different cooking objects of the cooking device 1 can be arranged in the left and right directions (Y-axis direction), the user can view the cooking process of different cooking objects in real time during the operation of the cooking device 1 through the transparent member 22. can be easily observed through

The short side 32S of the cooking surface 32 may extend in a direction perpendicular to the long side 32L and corresponding to the X-axis direction. As the plurality of heaters 210, 220, 230, and 240 are spaced apart in the Y-axis direction, the first cooking surface 34 and the second cooking surface 35 are partitioned in the Y-axis direction, and the long side 32L of the cooking surface 32 is Y-axis. The first cooking surface 34 and the second cooking surface 35 extending in the axial direction may have a sufficient length in one direction.

That is, assuming that the length of the first cooking surface 34 in the second direction (B) is the first length 34a and the length of the second cooking surface 35 is the second length 35a, the first The length 34a and the second length 35a may be provided to be long enough to allow the entire cooking object to be located inside the first cooking surface 34 or the second cooking surface 35 .

In other words, the first length 34a and the second length 35a are formed longer than the length obtained by halving the end surface 32S of the cooking surface 32, so that the first cooking surface 34 and the second cooking surface 35 The cooking surface 32 may be partitioned into a rectangular shape close to a square shape. That is, the cooking surface 32 can be partitioned efficiently.

Accordingly, the areas of the first cooking surface 34 and the second cooking surface 35 on which different cooking objects can be positioned may be respectively 34a*32S and 35a*32S. The first length 34a or the second length 35a may be provided with a length substantially corresponding to the short side 32S of the cooking surface 32 . Accordingly, cross-sectional shapes of the first cooking surface 34 and the second cooking surface 35 can be provided in a substantially square shape, and the cooking target can easily can be located inside.

The first length 34a or the second length 35a is not limited thereto, and the shorter side 32S of the cooking surface 32 may be formed to have different lengths, respectively, and the first cooking surface 34 and the second cooking surface 34 may be formed. The shape of the cross-sectional area of (35) may be provided in a rectangular shape.

However, the ratio (34a/32S, 35a/32S) of the short side 32S of the cooking surface 32 to the first length 34a or the second length 35a is the first and second cooking surfaces 34 and 35 The ratio of the long side 32L of the cooking surface 32 to the length when partitioned in the X-axis direction may be greater than that.

5 is a perspective view illustrating an example of a protection member of a cooking appliance according to an exemplary embodiment;

3 and 5 together, in the cooking appliance 1, heat generated by the first and third heaters 210 and 230 is transferred to the first region 11d-1 and generated by the second and fourth heaters 220 and 240. It may include a reflective member 51 provided so that the heat generated is transferred to the second region 11d-2.

The reflective member 51 may be disposed above the plurality of heaters 210 , 220 , 230 , and 240 to cover at least a portion of the plurality of heaters 210 , 220 , 230 , and 240 . For example, the reflective member 51 may be provided in a shape surrounding an upper region of each of the heaters 210 , 220 , 230 , and 240 .

Here, that the reflective member 51 covers the upper regions of the heaters 210 , 220 , 230 , and 240 does not mean that the reflective member 51 contacts the heaters 210 , 220 , 230 , and 240 . The reflective member 51 and the heaters 210 , 220 , 230 , and 240 may be spaced apart at regular intervals.

The reflective member 51 may reflect heat emitted from each of the heaters 210 , 220 , 230 , and 240 in a downward direction (−Z direction). That is, heat generated from each of the heaters 210 , 220 , 230 , and 240 may be guided to be transferred in a lower direction (-Z direction).

Accordingly, the heat generated from the first and third heaters 210 and 230 is concentrated in the first region 11d-1, and the heat generated from the second and fourth heaters 220 and 240 is concentrated in the second region 11d-2. It can be.

A protective member 52 may be disposed below the plurality of heaters 210 , 220 , 230 , and 240 to protect the plurality of heaters 210 , 220 , 230 , and 240 . The protection member 52 may prevent the risk of impact being applied to the heaters 210, 220, 230, and 240 disposed on the upper surface 11a of the cooking chamber 11 while the user inserts and takes out the cooking object from the inside of the cooking chamber 11.

In addition, the protection member 52 may prevent a user's hand from directly contacting the high- temperature heaters 210 , 220 , 230 , and 240 .

Since the protection member 52 is disposed below the heaters 210 , 220 , 230 , and 240 , heat generated by the heaters 210 , 220 , 230 , and 240 is transferred to the inside of the cooking chamber 11 through the protection member 52 . Accordingly, the protective member 52 may have a mesh structure in which a plurality of holes are formed.

The structure of the cooking appliance 1 described so far is only one example applicable to the embodiment of the cooking appliance 1 . Accordingly, it can be clearly understood by those skilled in the art that the structure of the cooking appliance 1 can be changed within a range in which the operation of the cooking appliance 1 described later can be performed.

Meanwhile, during a cooking process using the cooking device 1 , the inside of the cooking chamber 11 may be contaminated by foreign substances such as food and oil. An area mainly contaminated during the cooking process is a wall surface or a protective member 52 inside the cooking chamber 11 . In addition, the reflective member 51 may be contaminated through a hole formed in the protective member 52 .

In the case of the protective member 52, contaminants are difficult to wipe due to the nature of the mesh structure, and it is difficult to wipe off the reflective member 51 without separating the protective member 52.

Accordingly, the cooking appliance 1 and the control method thereof according to an exemplary embodiment provide a cleaning algorithm capable of effectively cleaning an area in the cooking chamber 11 that is difficult to clean. Hereinafter, the cleaning algorithm provided by the disclosed invention will be described in detail.

6 is a block diagram illustrating an operation of a cooking appliance according to an exemplary embodiment.

Referring to FIG. 6 , a cooking appliance 1 according to an embodiment includes a heating source 100 providing heat to the inside of a cooking chamber 11, a display 510 performing a user interface function, a speaker 520, and It includes an input device 530, a communication module 600 capable of communicating with other devices, and a controller 400 that controls the operation of the cooking appliance 1.

The heating source 100 is provided in the lower part of the cooking chamber 11 and includes a first heating source 300 including a magnetron that generates a high frequency and is provided in an upper region of the cooking chamber 11 and includes at least one heater. A second heating source 200 may be included.

The display 510 may display information about the current state of the cooking appliance 1, selectable functions or menus, and the like. In addition, when the cooking appliance 1 enters the cleaning mode, information on each step of the cleaning mode may be displayed, and a message for guiding the user to perform an operation to clean the inside of the cooking chamber 11 may be displayed. You may.

It may be provided at a position visible from the outside of the housing 10 . For example, as shown in FIG. 1 described above, the display 510 may be provided on the outer surface of the door 20. The display 510 may include a liquid crystal display (LCD), light emitting diodes (LED), A display such as OLED (Organic Light Emitting Diodes) can be employed.

The speaker 520 may audibly output information about the current state of the cooking appliance 1 or a notification to be provided to the user. For example, when cooking of the cooking appliance 1 is completed, a beep sound or a melody may be output, and when the cooking appliance 1 enters the cleaning mode, a sound indicating the start or completion of a cleaning operation may be output. can do.

In addition, a message for guiding information about each step of the cleaning mode or an operation to be performed by the user to clean the inside of the cooking chamber 11 may be audibly output. In addition, when an error occurs in the cooking appliance 1, a warning sound may be output.

The input device 530 may receive a user's input regarding a function, menu, cooking temperature, cooking time, and the like. For example, as shown in FIG. 1, it is rotatable to change a function or menu, change a cooking time, or change a cooking temperature, and select a function or menu, select a cooking time, or select a cooking temperature. An input device 530 in the form of a rotary knob capable of applying pressure may be provided. However, the example of the input device 530 is not limited thereto, and various types of input devices such as buttons and touch pads may be employed in the cooking appliance 1 .

The communication module 600 may include a wireless communication module that wirelessly exchanges data with external devices.

The wireless communication module may wirelessly communicate with a base station or an access point (AP), and exchange data with external devices via the base station or access point.

For example, the wireless communication module wirelessly communicates with an access point (AP) using Wi-Fi (WiFi, IEEE 802.11 technical standard), or uses CDMA, WCDMA, GSM, LTE (Long Term Evolution), 5G, WiBro, etc. can be used to communicate with the base station.

In addition, the wireless communication module may directly communicate with external devices. For example, the wireless communication module exchanges data with external devices in a short distance using Wi-Fi direct, Bluetooth (Bluetooth, IEEE 802.15.1 technical standard), ZigBee (IEEE 802.15.4 technical standard), etc. can

For example, the communication module 600 may receive a control signal for the cooking appliance 1 or various information for controlling the cooking appliance 1 from a user's mobile device through Wi-Fi or Bluetooth. Specifically, an application for controlling the cooking device 1 may be installed on the user's mobile device, and the user may select a desired cooking recipe by executing the application on the mobile device.

When a cooking recipe is selected, the mobile device may transmit information about the selected cooking recipe to the communication module 600 of the cooking device 1, and the controller 400 controls the heating source 100 according to the transmitted cooking recipe. can do.

The controller 400 may control overall operations of the cooking appliance 1 . According to a user input received by the input device 530 or information received by the communication module 600, the heating source 100 may be turned on/off, output, etc. may be controlled, and the display 510 and the speaker 520 may be controlled. You can control and output messages.

The controller 400 may include at least one memory storing a program for performing an operation described later and at least one processor executing the stored program.

Based on the configuration of the cooking appliance 1 described above, the operation of the cooking appliance 1 in the cleaning mode will be described in detail.

7 is a flowchart illustrating a method of controlling a cooking appliance according to an exemplary embodiment.

In the method for controlling a cooking appliance according to an embodiment, a controlled object is the cooking appliance 1 described above. Therefore, the description of the cooking appliance 1 described above may be applied to the control method of the cooking appliance even if there is no separate mention, and conversely, the description of the cooking appliance control method is also applied to the cooking appliance 1 even if there is no separate mention. possible.

Referring to FIG. 7 , first, it is determined whether the cooking appliance 1 has entered a cleaning mode (1100).

For example, the cleaning mode may be entered by a user's selection. When the user selects the cleaning mode by manipulating the input device 530, the cooking appliance 1 may enter the cleaning mode and operate in the cleaning mode.

It is also possible for the cooking appliance 1 to preemptively suggest selection of a cleaning mode. For example, the controller 400 may count the time elapsed from the last time the cooking appliance 1 operates in the cleaning mode, and if the counted time exceeds a predetermined reference time, the display 510 or A message notifying that the cleaning time has arrived may be output through the speaker 520 .

Alternatively, it is also possible to suggest selection of a cleaning mode based on a menu recently cooked in the cooking appliance 1 . For example, if a menu recently cooked in the cooking appliance 1 is a menu that contaminates the inside of the cooking chamber 11 with a lot of foreign matter such as oil splashed out, the controller 400 controls the display 510 or the speaker 520. The selection of the cleaning mode can be suggested through Information on menus contaminating the inside of the cooking chamber 11 may be stored in advance through experiments, statistics, and the like.

When the cleaning mode is entered (YES in 1100), the first heating source 300 is operated for a first time (1200).

Upon entering the cleaning mode, the user may insert a container filled with water into the cooking chamber 11 . Operating the first heating source 300 is to generate steam using water disposed inside the cooking chamber 11 .

As described above, the first heating source 300 includes a magnetron 310 disposed below the cooking chamber 11 to generate a high frequency. The controller 400 generates a high frequency by operating the first heating source 300 for a first time, and steam may be generated by the generated high frequency.

For example, the first operating time of the first heating source 300 may be selected from a range of 3 minutes to 10 minutes. The first time selected from the range of 3 minutes to 10 minutes may be preset, may be selected by the user, or the preset time may be changed by the user.

The first time may be determined in consideration of a time required to generate steam and a time required to remove contaminants inside the cooking chamber 11 by the generated steam. The first time may be determined by experiments, statistics, or simulations, and may be selected or changed by the user.

The controller 400 may control the first heating source 300 with a first output. For example, the first power may be set to 700W.

When the first time elapses (YES in 1300), the controller 400 stops the operation of the first heating source 300 (1400) and operates the second heating source 200 (1500).

It is also possible to stop the operation of the first heating source 300 and immediately operate the second heating source 200. However, in order to sufficiently secure the time for the contaminants inside the cooking chamber 11 to be removed by the steam, the first heating source 300 can be stopped. It is also possible to operate the second heating source 200 after the third time elapses after the operation of 300 is stopped.

For example, after operating the first heating source 300 with an output of 700W for 5 minutes, the operation of the first heating source 300 may be stopped and waited for 5 minutes. During this time, contaminants inside the cooking chamber 11 can be sufficiently removed, and the controller 400 can operate the second heating source 200 when 5 minutes have elapsed after the operation of the first heating source 300 has stopped. . Alternatively, as will be described later, in order to further improve the cleaning effect, it is also possible for the user to operate the second heating source 200 after wiping the inside of the cooking chamber 11 .

The second heating source 200 may include a plurality of heaters 210 , 220 , 230 , and 240 disposed in an upper region of the cooking chamber 11 to generate radiant heat. The controller 400 may remove contaminants inside the cooking chamber 11 by operating the second heating source 200 for a second time.

As described above, during the cooking process using the cooking appliance 1, the protective member 52 or the reflective member 51 under the second heating source 200 may be contaminated. The protective member 52 and the reflective member 51 are disposed very close to the second heating source 200 due to their functional characteristics, and when the second heating source 200 emits high-temperature heat, the second heating source The surfaces of the protective member 52 and the reflective member 51 disposed adjacent to the 200 are heated to a high temperature, and contaminants adhering to the surfaces of the protective member 52 and the reflective member 51 may be carbonized and fall off. there is.

In addition, as in the example above, when high-temperature heat is applied while the contaminants are soaked using steam, carbonization of the contaminants and separation from the surface can proceed more efficiently.

For example, the second time for operating the second heating source 200 may be selected from a range of 30 minutes to 70 minutes. The second time selected from the range of 30 minutes to 70 minutes may be preset, may be selected by the user, or the preset time may be changed by the user.

The second time may be determined in consideration of a time required for carbonization and separation of contaminants. The second time may be determined by experiments, statistics, or simulations, and may be selected or changed by the user.

The controller 400 may set the target internal temperature of the second heating source 200 to a predetermined temperature. For example, the controller 400 may operate the second heating source 200 by setting a target internal temperature of 200°C. When the second heating source 200 is operated by setting the target internal temperature to 200°C, the ambient temperature of the second heating source 200 may rise to 400°C.

When the second time elapses (YES in 1600), the controller 400 stops the operation of the second heating source (1700).

For example, the controller 400 may stop the operation of the second heating source 200 when 60 minutes have elapsed after the operation of the second heating source 200 .

According to the present embodiment, the steam cleaning using the first heating source 300 and the heating cleaning using the second heating source 200 are used in combination to clean the difficult-to-clean area inside the cooking chamber 11, for example, Due to the nature of the mesh structure, it is possible to effectively clean even the protective member 52, which is difficult to wipe off contaminants, or the reflective member 51, which is difficult to wipe without removing the protective member 52.

8 is a flowchart illustrating an operation of outputting a guide message to a user after the cooking appliance enters a cleaning mode in a method of controlling a cooking appliance according to an embodiment, and FIGS. In a cooking device and a control method of the cooking device, it is a diagram illustrating an example of a guide message output from the cooking device.

Steps in the flowchart of FIG. 8 having the same symbols as those of the flowchart of FIG. 7 have the same description. Accordingly, a detailed description thereof will be omitted.

Referring to FIG. 8 , when the cooking appliance 1 enters the cleaning mode (YES in 1100), the controller 400 controls the display 510 or the speaker 520 to output a guide message (1110).

As shown in the example of FIG. 9 , entering the cleaning mode may be performed by a user manipulating the input device 530 and selecting a cleaning mode from among various functions.

The guidance message output here is a message for guiding the introduction of water into the cooking chamber 11 before operating the first heating source 300 .

Referring to the example of FIG. 10 , the display 510 may visually output a guide message such as “Insert a cup filled with half a cup (150 ml) of water”. The content of the guide message may be different from this, and it is also possible to output it in the form of an image rather than text.

In addition, the controller 400 can also aurally output a guidance message to the same effect through the speaker 520 .

When a guide message is output and a user inputs a start command through the input device 530 after inserting a container containing water into the cooking chamber 11, the controller 400 may operate the first heating source 300. Yes (1200).

Alternatively, when a device such as a sensor for detecting the opening and closing of the door 20 or a camera for photographing the inside of the cooking chamber 11 is provided in the cooking appliance 1, the controller 400 automatically inserts the container containing water. It is determined, and even if a separate start command is not input, the first heating source 300 may be operated.

As described above, the first heating source 300 may operate for the first time. The controller 400 may count the elapsed time from the time the first heating source 300 operates, and the display 510 displays the time from the time the first heating source 300 operates, as shown in FIG. 11 . The remaining time until the first time elapses may be visually displayed.

When the first time elapses (yes in 1300), the operation of the first heating source 300 may be stopped (1400), and a guide message for guiding cleaning of the inside of the cooking chamber 11 may be output (1410).

It is also possible to output a guide message immediately after the operation of the first heating source 300 is stopped, but as described above, in order to secure enough time for contaminants to be swollen, the operation of the first heating source 300 is stopped. It is also possible to output a guide message after the third time has elapsed.

When the operation of the first heating source 300 is stopped, steam is generated inside the cooking chamber 11 by the first heating source 300, and steam is adhered to the surface such as the inner wall of the cooking chamber 11 due to the generated steam. Contaminants are in a dissolved state. Therefore, by wiping the inside of the cooking chamber 11 using a fiber material, the adhered contaminants can be easily removed.

To guide the cleaning of the inside of the cooking chamber 11, a guide message such as "Wipe the inside with a dry cloth" may be visually output as shown in the example of FIG. 12 . The content of the guide message may be different from this, and it is also possible to output it in the form of an image rather than text. Alternatively, it is also possible that the guide message is audibly output through the speaker 520 .

When the user inputs a command to resume cleaning by manipulating the input device 530 after wiping the inside of the cooking chamber 11, the controller 400 operates the second heating source 200 (1500).

As described above, the second heating source 200 may operate for a second time. The controller 400 may count the elapsed time from the time the second heating source 200 operates, and the display 510 displays the time from the time the second heating source 200 operates, as shown in FIG. 13 . The remaining time until the second time elapses may be visually displayed.

When the second period elapses (YES in 1600), the operation of the second heating source 200 may be stopped (1700), and a guide message for guiding cleaning of the inside of the cooking chamber 11 may be output (1410).

As described above, when the second heating source 200 emits high-temperature heat, contaminants adhering to adjacent members may be carbonized and fall off. The display 510 can visually output a guide message such as "Wipe the inside with a dry cloth" as in the example of FIG. 12 described above, and the user can clean the carbonized contaminants that have fallen on the floor of the cooking chamber 11. .

In this example, a case where the user induces a process of cleaning the inside of the cooking chamber 11 between the operation of the first heating source 300 and the operation of the second heating source 200 is taken as an example. In another example, cleaning of the inside of the cooking chamber 11 by the user may be omitted between steam cleaning using the first heating source 300 and cleaning the upper portion using the second heating source 200 .

In addition, it is also possible to provide the upper cleaning by the second heating source 200 as an option. Therefore, after the cleaning by the first heating source 300 is completed, a message for confirming whether or not to perform upper cleaning is visually or audibly output, and when the upper cleaning is selected by the user, the second heating source is selected. It is also possible to operate 200.

14 is a flowchart illustrating another example of cleaning the inside of a cooking chamber in the method of controlling a cooking appliance according to an embodiment.

According to another example of the control method of the cooking appliance, as shown in FIG. 14 , when the cleaning mode is entered (YES in 2100), the second heating source 200 is operated (2200), and the second heating source 200 ) After the second time elapses (Yes in 2300), the operation of the second heating source 200 may be stopped (2400).

This cleaning operation is an operation for removing contaminants around the plurality of heaters 210 , 220 , 230 , and 240 above the cooking chamber 11 . Contaminants adhering to the reflective member 51 or the protective member 52 around the plurality of heaters 210 , 220 , 230 , and 240 may be carbonized and fall off due to high-temperature heat emitted from the plurality of heaters 210 , 220 , 230 , and 240 .

Unlike other areas inside the cooking compartment 11 that can be easily cleaned by the user, it is difficult for the user to directly clean the upper area of the cooking compartment 11 around the second heating source 200 . Accordingly, when only the top cleaning is required, only the top cleaning using the second heating source 200 is performed according to the above-described process, thereby saving time and energy required for cleaning the inside of the cooking chamber 11 .

For example, cleaning modes that can be performed by the cooking appliance 1 may include a first cleaning mode and a second cleaning mode.

As shown in FIG. 8 described above, the first cleaning mode is the steam cleaning using steam generated by the first heating source 300 and the cooking chamber (using high-temperature heat generated by the second heating source 200). 11) may include top cleaning to clean the top.

As shown in FIG. 14 described above, the second cleaning mode may include only upper cleaning to clean the upper portion of the cooking chamber 11 using the high-temperature heat generated by the second heating source 200 .

As another example, the cleaning modes that can be performed by the cooking appliance 1 may include a first cleaning mode, a second cleaning mode, and a third cleaning mode.

The description of the first cleaning mode and the second cleaning mode is as described above, and in the third cleaning mode, the user induces internal cleaning between the operations of the first heating source 300 and the second heating source 200. process can be omitted.

Alternatively, a separate cleaning mode including only steam cleaning may be further added.

In this way, by allowing the user to select one of various cleaning modes, it is possible to perform optimal cleaning reflecting the current state of the cooking appliance 1 and the user's intention.

According to the cooking appliance and its control method described so far, by using the second heating source 200 provided on the upper part of the cooking chamber 11, the contaminants around the second heating source 200, which are not easily cleaned by the user, are effectively removed. can be removed

In addition, by operating the second heating source 200 after the contaminants are swollen by steam generated using the first heating source 300, the effect of removing contaminants can be improved.

The above detailed description is illustrative of the present invention. In addition, the foregoing is intended to illustrate and describe preferred embodiments of the present invention, and the present invention can be used in various other combinations, modifications, and environments. That is, changes or modifications are possible within the scope of the inventive concept disclosed in this specification, within the scope equivalent to the written disclosure, and/or within the scope of skill or knowledge in the art. The foregoing embodiment describes the best state for implementing the technical idea of the present invention, and various changes required in specific application fields and uses of the present invention are also possible. Therefore, the above detailed description of the invention is not intended to limit the invention to the disclosed embodiments. Also, the appended claims should be construed to cover other embodiments as well.

Claims (15)

1. cuisine;

   a first heating source provided under the cooking chamber and including a magnetron generating high frequency;

   a second heating source provided in an upper region of the cooking chamber and including at least one heater;

   a protection member provided under the second heating source; and

   In the cleaning mode, the first heating source is operated for a first time, and when the first time period elapses, the operation of the first heating source is stopped, and after the operation of the first heating source is stopped, the second heating source is operated. A cooking appliance comprising: a controller for operating the circle for a second time.
2. According to claim 1,

   The cooking appliance further comprising: a reflective member provided above the second heat source and wrapped around at least a portion of the second heat source.
3. According to claim 1,

   display; and

   Including more speakers,

   The controller,

   In the cleaning mode, the cooking appliance controls at least one of the display and the speaker to output a guide message for guiding the introduction of water into the cooking chamber before operating the first heating source.
4. According to claim 1,

   The controller,

   In the cleaning mode, the second heating source is operated after a lapse of a third time after the operation of the first heating source is stopped.
5. According to claim 3,

   The controller,

   In the cleaning mode, after the operation of the first heating source is stopped and before operating the second heating source, at least one of the display or the speaker is controlled to output a guide message guiding cleaning of the inside of the cooking chamber. cooking appliance.
6. According to claim 3,

   The controller,

   In the cleaning mode, when the second time period elapses after operating the second heating source, the operation of the second heating source is stopped and a guide message guiding cleaning of the inside of the cooking chamber is output to the display or the cleaning mode. A cooking appliance that controls at least one of the speakers.
7. According to claim 3,

   The controller,

   In the cleaning mode, the cooking appliance operates the first heating source to generate steam inside the cooking chamber.
8. According to claim 2,

   The controller,

   In the cleaning mode, the second heating source is operated to carbonize contaminants attached to the protection member or the reflective member.
9. According to claim 1,

   The cleaning mode,

   Including a first cleaning mode and a second cleaning mode,

   The controller,

   In the first cleaning mode, the first heating source is operated for a first time, the operation of the first heating source is stopped after the first time has elapsed, and the operation of the first heating source is stopped. The second heating source is operated for a second time,

   In the second cleaning mode, the cooking appliance operates the second heating source for the second time period.
10. According to claim 3,

    The controller,

    In the cleaning mode, when the operation of the first heating source is stopped, controlling at least one of the display or the speaker to output a guide message for receiving a selection as to whether or not the second heating source operates;

    When the operation of the second heating source is selected through an input device, the cooking appliance operates the second heating source for the second time period.
11. A cooking chamber, a first heating source provided in the lower part of the cooking chamber and including a magnetron that generates high frequencies, a second heating source provided in the upper region of the cooking chamber and including at least one heater, and the second heating source In the control method of a cooking appliance including a protective member provided at the bottom,

    Determining whether to enter a cleaning mode;

    operating the first heating source for a first time when entering the cleaning mode;

    stopping the operation of the first heating source after the first time elapses; and

    and operating the second heating source for a second time period after the operation of the first heating source is stopped.
12. According to claim 11,

    The cooking appliance,

    It further includes; a reflective member provided on top of the second heating source and provided in a form surrounding at least a portion of the second heating source,

    Operating the second heating source for a second time,

    and heating at least one of the protection member and the reflective member.
13. According to claim 11,

    When entering the cleaning mode, outputting a guide message for guiding the introduction of water into the cooking chamber through a display or a speaker before operating the first heating source.
14. According to claim 11,

    Operating the second heating source for a second time,

    and operating the second heating source after a third time elapses after the operation of the first heating source is stopped.
15. According to claim 13,

    After the operation of the first heating source is stopped and before operating the second heating source, outputting a guide message for guiding cleaning of the inside of the cooking chamber through at least one of the display and the speaker; further comprising How to control cooking appliances.

Images