KR20230061201A - Cooking appliance and method for controlling the same - Google Patents

Abstract

The present invention relates to a cooking appliance. According to the present invention, a cavity (S) can be formed in cases (100, 200), and a first heat source module (400) can be arranged on a side surface of the cases (100, 200) to emit microwaves. In addition, on a floor surface of the cases (100, 200), a second heat source module (500) can be arranged to emit a magnetic field. On an upper side of the cases (100, 200), a third heat source module (600) can be arranged to generate radiation heat. The first, second, and third heat source modules (400, 500, 600) can be operated at the same time or can be operated in turn. Therefore, cooking quality can be increased.

Description

Cooking appliance and its control method {Cooking appliance and method for controlling the same}

The present invention relates to a cooking appliance and a control method thereof.

BACKGROUND OF THE INVENTION Various types of cooking appliances for heating food at home or in restaurants are being used. For example, various cooking appliances such as a microwave oven, an electric range using an induction heating method, and a grill heater are being used.

Among them, the microwave oven is a high-frequency heating type cooking device. The microwave oven uses heat generated by violent vibration of molecules in a high-frequency electric field. The microwave oven has an advantage of evenly heating food in a short time.

Also, an induction heating type electric range is a cooking device that heats an object to be heated by using electromagnetic induction. Specifically, the induction heating type electric range uses a magnetic field generated around the coil when high-frequency power of a predetermined size is applied to the coil to generate eddy current in an object to be heated made of metal components, thereby heating the object to be heated. It can heat itself.

Also, the grill heater is a cooking device that heats food by radiating or convecting infrared heat. Since the grill heater allows infrared heat to penetrate the food, the food can be cooked evenly throughout.

In this way, as cooking appliances using various types of heat sources are released, the number and types of cooking appliances equipped by users have increased, and there is a problem in that these cooking appliances occupy a large volume in a living space. Accordingly, users' demand for a complex cooking appliance including a plurality of heating modules is increasing. In addition, it is necessary to develop a cooking appliance using a plurality of heat sources so that food in an object to be heated can be more uniformly and quickly cooked.

U.S. registered patent US 6,987,252 B2 (prior art 1) discloses a cooking appliance including a heat source using radiant heat and convective heat along with microwaves, and Korean Patent Publication No. 10-2018-0115981 (prior art 2) also discloses a microwave oven. A cooking appliance including a heat source using a heat source and a heat source generating radiant heat and convection heat is disclosed. In addition, Korean Patent Publication No. 10-2021-0107487 (Prior Art 3) discloses a cooking device for simultaneously using microwave and induction heating heat sources in one device.

However, prior arts 1-3 do not disclose a technique for changing the location of some heat sources in order to efficiently use a plurality of heat sources. In addition, in a cooking appliance having a plurality of heat sources, adjusting the positions of some heat sources may affect the use of other heat sources, so it is necessary to control the operation of other heat sources that are not in use. In addition, when a plurality of heat sources are used simultaneously, a circuit breaker may operate in excess of allowable power.

US registered patent US 6,987,252 B2 (prior art 1) Korean Patent Publication No. 10-2018-0115981 (Prior Art 2) Korean Patent Publication No. 10-2021-0107487 (prior art 3)

An object of the present invention is to simultaneously operate or partially operate the heat sources in a cooking appliance equipped with a plurality of heat sources.

Another object of the present invention is to alternately operate the heat sources in a cooking appliance equipped with a plurality of heat sources.

Another object of the present invention is to operate the heat source installed on the bottom surface of the cooking appliance first when the plurality of heat sources are alternately operated.

Another object of the present invention is to determine simultaneous operation and alternating operation of the heat sources by comparing total power used and allowable power used when simultaneously operating the plurality of heat sources in a cooking appliance equipped with a plurality of heat sources.

In the present invention for achieving the above object, a cavity may be formed inside the case. A first heat source module emitting microwaves may be disposed on a side surface of the case. A second heat source module emitting a magnetic field may be disposed on a bottom surface of the case, and a third heat source module generating radiant heat may be disposed on an upper portion of the case. Operations of the first, second, and third heat source modules may be controlled by a processor.

When an operation command for the first, second, and third heat source modules is input, the processor operates the first, second, and third heat source modules according to a comparison result between the total power used when operating the first, second, and third heat source modules and a preset allowable power. ,2,3 Can control the operation of the heat source module. The processor may simultaneously operate the first, second, and third heat source modules when the total used power is less than or equal to the allowable power. However, if the total power used is greater than the allowable power, the processor may alternately operate the first, second, and third heat source modules.

When the first, second, and third heat source modules are alternately operated, the processor operates the second heat source module first. When operating the second heat source module, the processor may operate the second heat source module when a container is detected on the upper surface of the second heat source module. Also, when the processor alternately operates the first, second, and third heat source modules, it is preferable to alternately operate the second heat source module, the third heat source module, and the first heat source module in this order. The reason is that when all of the first, second and third heat source modules 400, 500 and 600 are simultaneously operated, a circuit breaker operates due to overvoltage or overcurrent, and power is cut off.

The cooking appliance of this embodiment may further include an input unit. The input unit receives cooking levels of the first, second, and third heat source modules. When the user selects the cooking level by touching it, the power to be used during cooking and operation time are determined. At this time, the second heat source module is operated for a first set time with first use power corresponding to the input cooking level of the second heat source module, and the third heat source module is operated at the maximum cooking level of the second heat source module. The cooking level of the third heat source module inputted as the corresponding second use power is operated for a second set time, and the first heat source module operates with the second use power × the cooking level of the first heat source module inputted as the second use power Xth It operates for the 3rd set time and stops the operation during the 4th set time.

Meanwhile, when the first, second, and third heat source modules are alternately operated, the processor repeats the alternating operation until the input cooking time ends.

The first heat source module emits microwaves into the cavity, the second heat source module emits a magnetic field toward the cavity, and the third heat source module emits radiant heat toward the cavity.

The cooking appliance according to the present invention has the following effects.

According to the present invention, the quality of cooking can be improved and the cooking time can be reduced by simultaneously using a plurality of heat sources in a cooking appliance equipped with a plurality of heat sources.

According to the present invention, only some of the plurality of heat sources can be selectively operated according to the type and characteristics of food.

According to the present invention, when cooking is performed by operating all of the plurality of heat sources, the plurality of heat sources may be alternately operated.

According to the present invention, when a plurality of heat sources are alternately operated, since the heat source on the bottom surface of the cooking appliance is operated first, it is possible to detect whether the container is disposed when the heat source is used.

According to the present invention, simultaneous operation and alternating operation of the heat sources are determined by comparing the total power used when the plurality of heat sources are simultaneously operated in a cooking appliance equipped with a plurality of heat sources and allowable power, so that cooking can be safely performed without operation of a circuit breaker. can

1 is a perspective view showing one embodiment of a cooking appliance according to the present invention;
2 is an exploded perspective view of parts constituting one embodiment of a cooking appliance according to the present invention;
3 is a perspective view illustrating an exploded view of the remaining parts except for a door, an outer side plate, and an outer top plate among parts constituting one embodiment of a cooking appliance according to the present invention;
Figure 4 is a perspective view of the structure of Figure 3 viewed from the opposite side of Figure 3;
5 is a cross-sectional view taken along line VII-VII' of FIG. 1;
6 is a perspective view illustrating a state in which parts of a second heat source module constituting one embodiment of a cooking appliance according to the present invention are disassembled from each other;
7 is a perspective view showing the configuration of a third heat source module constituting one embodiment of the cooking appliance according to the present invention;
8 is an exploded perspective view of components constituting the third heat source module shown in FIG. 7;
9 is a perspective view showing the third heat source module shown in FIG. 7 disposed in a first position;
10 is a perspective view showing the third heat source module shown in FIG. 7 disposed in a second position;
11 is a cross-sectional view showing a state in which the third heat source module shown in FIG. 7 is disposed in a first position and the elevation detection switch is pressed by an operation pin;
12 is a component block diagram showing a connection relationship between components connected to a processor constituting one embodiment of a cooking appliance according to the present invention.
13 is an exemplary view of an input unit for inputting cooking levels of a plurality of heat sources in an embodiment of a cooking appliance according to the present invention;
FIG. 14 is an exemplary view showing the power used according to the cooking level of the second heat source module in one embodiment of the cooking appliance according to the present invention.
15 is a flowchart illustrating a control method of the cooking appliance when all of a plurality of heat sources are used according to an embodiment of the cooking appliance according to the present invention;
16 is a perspective view showing a second embodiment of a cooking appliance according to the present invention;
FIG. 17 is a perspective view of the second embodiment shown in FIG. 16 viewed from an angle different from that of FIG. 16;
18 is a plan view showing the structure of the second embodiment shown in FIG. 16;
19 is a rear view showing the structure of the second embodiment shown in FIG. 16;
20 is a left side view showing the structure of the second embodiment shown in FIG. 16;
21 is a right side view showing the structure of the second embodiment shown in FIG. 16;

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to components of each drawing, it should be noted that the same components have the same numerals as much as possible even if they are displayed on different drawings. In addition, in describing an embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function hinders understanding of the embodiment of the present invention, the detailed description will be omitted.

The cooking appliance of the present invention is for cooking food to be cooked (hereinafter referred to as 'cooked water') using a plurality of heat sources. The cooking appliance of the present invention may include a first heat source module 400 , a second heat source module 500 and a third heat source module 600 . The first heat source module 400, the second heat source module 500, and the third heat source module 600 may be disposed in the cooking appliance of the present invention, and may be composed of different types of heat sources. Hereinafter, the plurality of heat sources, a cooling device (cooling fan module) for cooling the heat sources, and a device for measuring the state of the cooking appliance will be mainly described.

1 shows an embodiment of a cooking appliance according to the present invention. As can be seen, in this embodiment, a cavity S is formed inside the cooking appliance, and the cavity S can be opened and closed by the door 300. The rest of the cooking appliance except for the door 300 may be shielded by the cases 100 and 200 . The cavity (S) is a kind of empty space and can be regarded as a cooking chamber. The cases 100 and 200 may further include an inner case 100 and an outer case 200, and detailed structures of the inner case 100 and the outer case 200 will be described again below.

Referring to FIG. 1 , in this embodiment, the first heat source module 400 may be disposed on the left side of the cooking appliance, and the second heat source module 500 may be disposed on the floor. Also, the third heat source module 600 may be disposed above the cooking appliance. As such, in this embodiment, the first heat source module 400, the second heat source module 500, and the third heat source module 600 may be disposed on different surfaces among the six surfaces constituting the cases 100 and 200, respectively.

In FIG. 2 , parts constituting the cooking appliance are disassembled, and the third heat source module 600 is exposed. In this embodiment, the third heat source module 600 can move up and down between a first position and a second position. Referring to the drawings, the third heat source module 600 can move toward the bottom surface of the cavity S, that is, toward the second heat source module 500 while being moved up and down.

Unlike this, in another embodiment, the first heat source module 400 may be disposed on the right side of the cooking appliance, and the third heat source module 600 may be disposed on the rear side of the cooking appliance. Also, the third heat source module 600 may be fixed to the cases 100 and 200 without being moved.

As shown in FIG. 2 , the inner case 100 constituting the cases 100 and 200 may be configured to surround the cavity S. The inner case 100 may include a pair of inner side plates 110 and an inner thick plate 120 connecting between the pair of inner side plates 110 . The pair of inner side plates 110 and the inner thick plate 120 may form a substantially U-shape.

The third heat source module 600 may be disposed above the inner case 100 . That is, it may be considered that the upper portion of the cavity S is shielded by the third heat source module 600 . A second heat source module 500 may be disposed below the inner case 100 . It may be considered that the lower portion of the cavity S is shielded by the second heat source module 500 . Accordingly, the second heat source module 500 and the third heat source module 600 may also be regarded as parts of the inner case 100 surrounding the cavity S.

An intake port 123 and an exhaust port 125 may be respectively formed on the pair of inner side plates 110 . Since the intake port 123 and the exhaust port 125 are respectively formed on a pair of side plates, it can be seen that they are disposed on opposite sides of each other. Each of the intake port 123 and the exhaust port 125 may open toward the cavity S to connect the cavity S to the outside.

The inlet 123 is opened toward the cavity (S). A supply duct 910 may be disposed on an outer surface of the side plate where the inlet 123 is formed to supply air to the inlet 123 . Moisture evaporates from the food cooked by the first heat source module 400, and thus a lot of moisture may occur in the cavity S. In order to remove such moisture, it is necessary to supply air to the inside of the cavity (S). In this embodiment, air may be injected through the intake port 123, and air may be discharged through the exhaust port 125 on the opposite side. At this time, the air introduced through the intake port 123 may be part of the air that has a heat dissipation (cooling) action while passing through the inside of the case 100 or 200 .

Referring to FIG. 3 , a camera mounting portion 128 may be provided on the inner thick plate 120 . A camera module 730 may be mounted on the camera mounting unit 128 . The camera mounting portion 128 may be recessed backward in the cavity (S), and conversely, when viewed from the back of the inner thick plate 120, it may be seen as a protruding structure. The group camera mounting portion 128 is preferably provided at the center of the inner thick plate 120 so that the camera module 730 faces the center of the cavity (S). The camera module 730 may take a wide image of the inside of the cavity (S). To this end, the camera module 730 may face the center of the cavity (S).

Referring to FIG. 5 , the camera module 730 is for observing the inside of the cavity (S). The camera module 730 allows the user to observe the food inside the cavity S in real time, and the processor 700 analyzes the image captured by the camera module 730 to obtain an appropriate cooking temperature. and time can be controlled.

Referring to FIGS. 3 and 4 , an inner top plate 160 may be disposed above the inner thick plate 120 . The inner top plate 160 may have a substantially square frame shape and may be disposed along the upper edges of the pair of side plates. An upper plate opening 162, which is a kind of empty space, may be formed in the center of the inner top plate 160. The third heat source module 600 may be moved up and down through the upper plate opening 162 .

A lighting unit 165 may be provided on the inner top plate 160 . The lighting unit 165 may be provided above the inner top plate 160 . In this embodiment, the lighting unit 165 may be provided in the middle of the front part of the inner top plate 160 close to the door 300 .

Also, the lighting unit 165 may be provided in an inclined shape. Accordingly, the angle at which light is emitted from the lighting unit 165 may be inclined toward the center of the cavity (S).

An outer case 200 may be disposed outside the inner case 100 . The outer case 200 may surround the inner case 100 . Between the inner case 100 and the outer case 200 may be provided a predetermined space, that is, an electrical cabinet. A processor 700, a first cooling fan module 810, a second cooling fan module 850, and a power supply unit 770 may be disposed in the electrical compartment. It can be seen that the third heat source module 600 is also disposed between the inner case 100 and the outer case 200 .

Referring to FIG. 2, the outer case 200 includes a pair of outer plates 210, an outer back plate 220 connecting between the pair of outer plates 210, an outer top plate 230 disposed thereon, It may include an out front plate 240 and an out lower plate 250 disposed in the front. The outer case 200 may cover the entire outer surface of the inner case 100, and thus the inner case 100 may be hidden by the outer case 200 from the outside.

The outer top plate 230 may be formed in a substantially rectangular plate shape. The neighboring upper plate 230 may be disposed above the third heat source module 600 . The outer top plate 230 may shield the third heat source module 600 . The outer top plate 230 can be seen as a component disposed at the outermost part of the top of the cooking appliance.

A top plate shielding part 232 may be provided at the front of the outer top plate 230 . The upper plate shielding part 232 may have a shape in which a front portion of the outer upper plate 230 is orthogonally bent. The upper plate shielding part 232 can support a display substrate (not shown) provided in the display module 350 to be described below from the rear, and the internal structure of the cooking appliance moves forward through the display module 350. You can avoid exposure. Reference numeral 235 denotes a hole through which a part of the wire harness can be passed backward, but may be omitted.

The out front plate 240 may be disposed behind the door 300 . The out front plate 240 may have a substantially square frame shape. The center of the out front plate 240 may be penetrated to expose the inside of the cavity S to the outside. The outer front plate 240 may be coupled to a front portion of a pair of inner side plates 110 constituting the inner case 100 . Accordingly, the out front plate 240 may be regarded as a part of the inner case 100 rather than a part of the outer case 200 .

In this embodiment, the height of the out front plate 240 is higher than the inner side plate 110 constituting the inner case 100, so that an empty space can be formed at the rear of the upper end and the rear of the lower end of the out front plate 240, respectively. there is. This empty space constitutes control rooms in which parts are mounted, and may also serve as a heat dissipation space for heat dissipation of parts. For example, a first cooling fan module 810, a second cooling fan module 850, a first cooling fan module 810, a second cooling fan module 850, and a second cooling fan module 850 may be provided at the rear of a portion protruding upward from the outer front plate 240 further upward of the inner side plate 110. A third heat source module 600 may be disposed.

An air suction part 242 and an air discharge part 243 may be respectively formed on the out front plate 240 . In this embodiment, the air intake part 242 is disposed on the upper part of the out front plate 240, and the air discharge part 243 is disposed on the lower part of the out front plate 240. The air intake part 242 and the air discharge part 243 may each extend in the left and right width directions of the front outer plate 240 . Outside air is introduced into the first electrical compartment ES1 through the air suction part 242 to cool parts including heat sources, and the air heated by the heat of the parts is supplied to the outside through the air discharge part 243. can be emitted as

In addition, the air intake portion 242 may be formed at a portion further protruding upward from the outer front plate 240 to the upper side of the inner side plate 110 . Further, the first cooling fan module 810 and the second cooling fan module 850 may be disposed behind the air intake unit 242 . Therefore, when the first cooling fan module 810 and the second cooling fan module 850 operate, the outside air passes through the air suction part 242 to the outer top plate 230 and the inner top plate 160. It may be introduced into the first battlefield ES1 provided between the .

The air discharge part 243 may be formed at a portion of the outer plate 240 protruding more downward than the second heat source module 500 . A second electrical compartment ES2 formed between the second heat source module 500 and the lower outer plate 250 may be provided behind the air discharge unit 243 . Air introduced into the cooking appliance through the air suction unit 242 may be discharged to the air discharge unit 243 after passing through the second electrical chamber ES2.

A hinge hole 244 may be formed below the out front plate 240 . The hinge hole 244 may be a portion through which a hinge assembly (not shown) of the door 300 passes. The hinge assembly may pass through the hinge hole 244 and be coupled to the hinge holder 253 provided on the lower outer plate 250 .

A connector part 245 may be provided on an upper portion of the out front plate 240 . The connector part 245 may be disposed above the out front plate 240 . The connector part 245 is electrically connected to the processor 700, and a worker can control the processor 700 by contacting the connector part 245. The connector part 245 may be omitted or disposed on the outer back plate 220 or the outer side plate 210 .

A shielding frame 247 may be provided behind the out front plate 240 . The shielding frame 247 is disposed behind the air intake part 242 of the out front plate 240 to block access to the wire harness from the outside and to conceal internal parts. A plurality of slits are formed in the shielding frame 247, and air introduced through the air suction part 242 can pass through.

The outer case 200 may include an outer lower plate 250. The outer lower plate 250 may be disposed below the inner case 100 . In this embodiment, the out bottom plate 250 may connect between the out rear plate 220 and the out front plate 240 . In addition, the outer lower plate 250 may be connected to an insulating thick plate 280 to be described later. The lower outer plate 250 may be spaced apart from the second heat source module 500, and a second electrical compartment ES2 may be formed at the spaced part.

Meanwhile, if the aforementioned control room is defined, the control room may be divided into a plurality of spaces. In this embodiment, the control room may be divided into a first control room (ES1) to a fifth control room (ES5). (i) The first electrical chamber ES1 is formed between the inner upper plate 160 and the outer upper plate 230, and (ii) the second electrical chamber ES2 is formed between the second heat source module 500 and the lower outer plate 250. ), (iii) the third electrical cabinet (ES3) is formed between the insulated back plate 280 and the outboard back plate 220 to be described later, (iv) the fourth electrical cabinet (ES4) and the fifth electrical cabinet (ES5) may be formed between the pair of inner side plates 110 and the pair of outer side plates 210, respectively. The first battlefield ES1 and the fifth battlefield ES5 are arbitrarily divided, and may be connected to each other.

At this time, it can be seen that each electrical chamber is formed on each side of the case. The first to fifth electrical chambers ES1 to ES5 are formed on different surfaces of the case, which is a hexahedron. In addition, it can be seen that the first heat source module 400, the second heat source module 500, and the third heat source module 600 are disposed on different surfaces of the case.

The outer case 200 may include an insulating top plate 270 . The insulation top plate 270 may be disposed between the outer top plate 230 and the inner top plate 160 . Since the cavity S generates high heat during the cooking process, the temperature of the inner top plate 160 may also increase. The heat insulating top plate 270 can reduce heat transferred from the inner top plate 160 to the outer top plate 230 . Like the inner top plate 160, the heat insulating top plate 270 may have a rectangular frame shape through which a center part penetrates. The movable opening 272 formed at the center of the insulated top plate 270 may be connected to the top plate opening 162 of the inner top plate 160, and is a third heat source through the movable opening 272 and the top plate opening 162. Module 600 is movable.

As shown in FIGS. 3 and 4 , the distance sensor 710 and the cooling fan modules 810 and 850 may be disposed on the insulating top plate 270 . Since the distance sensor 710 and the cooling fan modules 810 and 850 are disposed on the insulating top plate 270, heat from the cavity S is directly transferred to the distance sensor 710 and the cooling fan modules 810 and 850. It can be prevented. Accordingly, durability of the cooling fan modules 810 and 850 may be increased.

The distance sensor 710 may measure the presence or absence of food, the thickness of food, or the height of food. The distance sensor 710 measures the thickness or height of the food, and the processor 700 selects the first heat source module 400, the second heat source module 500, or the third heat source module according to the measured information ( 600) and the temperature may be differently controlled. In addition, the distance sensor 710 may measure the thickness or height of food that changes according to the cooking time, and the processor 700 may control the remaining cooking time or cooking temperature. The distance sensor 710 may be an infrared sensor.

In addition, it is preferable that the distance sensor 710 be disposed at the center of the cavity S based on the left and right widths of the insulation top plate 270 so as to be directed to the center of the cavity S. The inner top plate 160 is disposed under the heat insulation top plate 270, but a sensing hole (not shown) is opened in the inner top plate 160 so that the distance sensor 710 passes through the sensing hole ( ). The inside of the cavity S may be sensed. As such, in this embodiment, since the distance sensor 710 is disposed on the heat insulating top plate 270, it is possible to prevent heat from the cavity S from being directly transmitted to the distance sensor 710. Therefore, the durability of the distance sensor 710 can be improved.

A protective cover 276 blocking electromagnetic waves passing through a gap between the moving assembly 630 and the fixed assembly 640 may be provided on the heat insulating top plate 270 . The protective cover 276 may be provided in a form surrounding edges of the fan through-portions 278a and 278b formed at the center of the heat insulating top plate 270 . The protective cover 276 will be described again below.

Fan through-portions 278a and 278b may be formed in the insulating top plate 270 . The fan through-portions 278a and 278b may be formed at a portion where the heat insulating top plate 270 protrudes more backward than the inner case 100 . Accordingly, the fan through-portions 278a and 278b may be opened to the outside of the inner case 100 . In this embodiment, the fan through portions 278a and 278b may be opened to the rear of the insulating thick plate 280 coupled to the inner case 100 .

The first cooling fan module 810 may be disposed at one side of the fan through-portions 278a and 278b. A power supply unit 770 may be disposed below the fan through-portions 278a and 278b. Accordingly, the air discharged from the first cooling fan module 810 may be discharged downward, that is, to the power supply unit 770 through the fan through-portions 278a and 278b.

The power supply unit 770 may serve to receive external power and transfer it to internal parts of the cooking appliance. The power supply unit 770 may include a high voltage transformer 771, a high voltage capacitor 773 and a fuse. The components constituting the power supply unit 770 are only examples, and additional components may be added or some may be omitted.

The high voltage transformer 771 may serve to apply a high voltage current to the magnetron 410 . For example, the high-voltage transformer 771 may be a component for stepping up a household voltage of 100-220V to a high voltage. In addition, the high voltage transformer 771 may also supply power to the working coil 570 of the second heat source module 500 or the heater unit 610 of the third heat source module 600 . In the drawing, a busbar or wire harness for connecting the high-voltage transformer 771 and the magnetron 410 is omitted.

In this embodiment, the power supply unit 770 is disposed on the surface 281 of the insulating thick plate 280 . The insulating thick plate 280 is coupled to the inner thick plate 120 to prevent heat from the inner thick plate 120 from being directly transmitted to the power supply unit 770 . The insulating thick plate 280 has a substantially rectangular plate shape, and a camera avoidance hole 288 for avoiding interference with the camera module 730 is formed.

The high-voltage transformer 771 and the high-voltage capacitor 773 may be mounted on the rear surface 281a of the insulating thick plate 280 . In this embodiment, the high-voltage transformer 771 is disposed on the right side with respect to the center of the insulating thick plate 280. More precisely, the high voltage transformer 771 may be disposed under the second cooling fan module 850 .

Referring to FIG. 2 , an insulating thick plate 280 may be disposed between the inner thick plate 120 and the outer thick plate 220 . The insulating thick plate 280 may be coupled to the inner thick plate 120 and form a third electrical cabinet ES3 between the outer thick plate 220 and the outer thick plate 220 . Like the insulating top plate 270, the heat insulating thick plate 280 can reduce heat transferred from the inner thick plate 120 to the outer thick plate 220.

Referring to FIGS. 3 and 4 , the insulating thick plate 280 may have a rectangular plate shape. One side of the insulating thick plate 280 may face the inner thick plate 120, and the opposite side may face the outer thick plate 220. The insulating thick plate 280 is coupled to the inner thick plate 120, and the power supply unit 770 may be disposed on a surface of the insulating thick plate 280 facing the outer thick plate 220. Therefore, the heat insulation thick plate 280 can prevent heat from the inner top plate 160 from being directly transferred to the power supply unit 770 .

A spacer 282 may be disposed under the insulating thick plate 280 . The spacer 282 may further protrude downward from the insulating thick plate 280 . The spacer 282 may allow a lower end of the insulating thick plate 280 to be spaced apart from the outer lower plate 250 . Air may flow into an empty space between the lower end of the insulating thick plate 280 formed by the spacer 282 and the outer lower plate 250 . Reference numeral 283 denotes a vent through which air flows. The spacer 282 may be made integrally with the insulating thick plate 280 or may be a separate object assembled to the insulating thick plate 280 .

Referring to FIGS. 1 and 2 , a door 300 may be provided in front of the out front plate 240 . The door 300 serves to open and close the cavity (S). The door 300 can be rotated with the hinge assembly provided at the lower part coupled to the hinge holder 253 provided on the lower outer plate 250 . The transparent part 310 of the door 300 is made of a transparent or translucent material, so that the cavity S can be observed from the outside. Reference numeral 320 denotes a handle of the door 300 .

The left and right frames 330 may be coupled to side surfaces of the door 300, and the lower frame 340 may be coupled to the lower end. Although not shown, an upper frame may be provided above the door 300 . These frames may form a skeleton of the door 300 by surrounding the see-through part 310 .

Also, a display module 350 may be disposed above the door 300 . The display module 350 may display the cooking state of the cooking appliance and may include an interface for a user to manipulate the cooking appliance. The air intake unit 242 is disposed below the display module 350 so that the display module 350 does not interfere with the air intake unit 242 .

The display module 350 may include an input unit 351 and a display unit 352 . The input unit 351 may provide an interface for a user to input an operation command for operating the cooking appliance. The display unit 352 can notify the user by displaying various information such as the operating state of the cooking appliance and the cooking state of food. The input unit 351 may include a touch input means. The touch input means is a device for inputting an operation command through a user's touch, and may include a touch sensor for detecting a touch operation. For example, the touch input unit may be implemented as an integral unit of the input unit 351 and the display unit 352 or as a single module in the display module 350 . When the display unit 352 and the touch sensor form a mutual layer structure to form a touch screen, the display module 350 may be implemented as the input unit 910 . The touch sensor may have a form of, for example, a touch film, a touch sheet, or a touch pad. A user may input an operation command of the first, second, and third heat source modules 400, 500, and 600 through the input unit 351. In addition, the user may input an elevation command of the third heat source module 600 through the input unit 351 .

A first heat source module 400 may be disposed in the inner case 100 . The first heat source module 400 may generate microwaves to cook food. In this embodiment, the first heat source module 400 may be disposed on the inner side plate 110 of the inner case 100 . Referring to FIG. 2 , the first heat source module 400 may be disposed outside the inner side plate 110 disposed on the left side among the pair of inner side plates 110 .

Since the magnetron 410 of the first heat source module 400 is disposed adjacent to the insulating thick plate 280, the first heat source module 400 is provided in the fourth electrical cabinet ES4 and the fifth electrical cabinet ES5. ) can be seen as being placed in That is, it can be said that the first heat source module 400 is disposed along the two surfaces of the cases 100 and 200 . Alternatively, the magnetron 410 may also be disposed on the inner side plate 110 together with the wave guide 420 . Alternatively, the first heat source module 400 may be disposed outside the inner side plate 110 disposed on the right side of the pair of inner side plates 110 or outside the inner thick plate 120 .

3 and 4, the first heat source module 400 includes a magnetron 410 for oscillating microwaves, and guiding the microwaves generated by the magnetron 410 to the cavity S. A waveguide 420 may be included. At this time, the magnetron 410 may be mounted on a portion where the wave guide 420 protrudes from the inner side plate 110 . Microwaves generated by the magnetron 410 may be transmitted to the cavity S through the waveguide 420 .

Since the magnetron 410 is mounted on a protruding portion of the inner side plate 110, it can be disposed in the third electrical cabinet ES3. As such, when the magnetron 410 is disposed in the third electrical compartment ES3, the magnetron 410 may be cooled by the first cooling fan module 810.

Looking at the second heat source module 500 next, the second heat source module 500 may be disposed on the bottom surface of the cases 100 and 200 . The second heat source module 500 can quickly heat food by induction heating. The second heat source module 500 may be fixed to the bottom surfaces of the cases 100 and 200 . As shown in FIGS. 2 and 3 , in this embodiment, the second heat source module 500 may constitute the bottom of the inner case 100 . That is, the upper portion of the second heat source module 500 may be exposed to the cavity (S).

The second heat source module 500 may be controlled by the processor 700 . The processor 700 may linearly control the power of the second heat source module 500 by controlling the second heat source module 500 in an inverter manner. Accordingly, detailed control of the second heat source module 500 may be possible.

A container B for placing food on top of the second heat source module 500 may be disposed. The bottom of the container (B) may be made of a magnetic metal material such as a stainless steel plate. When the container (B) is heated by the magnetic field generated by the working coil 570, the food contained in the container (B) may also be heated.

Referring to FIG. 1 , a cover plate 580 on which the container B is seated may be provided at the center of the second heat source module 500 . The cover plate 580 may be disposed at a position facing the heater unit 610 constituting the third heat source module 600 . Accordingly, the lower part of the food may be heated by the second heat source module 500 and the upper part may be heated by the third heat source module 600 .

6 shows a disassembled structure of the second heat source module 500 . As can be seen, the second heat source module 500 may include a base plate 510 and a supporter 520 . Also, a mounting bracket 530, a shielding filter 540, and a coil assembly 550 may be disposed between the base plate 510 and the supporter 520.

The base plate 510 has a substantially rectangular plate shape in which a base hole 512 passes through the center, and may be regarded as a lower plate of the inner case 100 constituting the bottom surface of the cavity (S). The cover plate 580 may be disposed in the base hole 512 , and the cover plate 580 may be made of a non-magnetic component. The base plate 510 may be made of a metal material that is magnetic. The base plate 510 made of a magnetic component may block microwaves generated by the first heat source module 400 from reaching the working coil 570 .

The supporter 520 has a substantially disc shape, and a plurality of heat dissipation slits 525 for heat dissipation may be formed in the supporter 520 . In addition, the coil base 560 and the working coil 570 constituting the coil assembly 550 may be disposed on the upper surface of the supporter 520 . The supporter 520 may function to shield electromagnetic interference (EMI).

The mounting bracket 530 may be disposed between the base plate 510 and the supporter 520 . The mounting bracket 530 may be coupled to the base plate 510 and the supporter 520 to connect the base plate 510 and the supporter 520 . In this embodiment, the base plate 510 and the mounting bracket 530 are coupled by welding, and the mounting bracket 530 and the supporter 520 are coupled by screw fastening. Alternatively, the base plate 510 and the supporter 520 may be screwed together, and the mounting bracket 530 and the supporter 520 may be welded.

In this case, the supporter 520 and the coil base 560 may also be coupled to each other through screw fastening. As a result, the coil assembly 550 may be fixed not only to the supporter 520 but also to the base plate 510 via the mounting bracket 530 . Accordingly, both the upper and lower portions of the coil assembly 550 may be firmly fixed.

The base plate 510 may have a plurality of concavo-convex structures. The concavo-convex structure is for coupling with the mounting bracket 530, the shielding filter 540, and the coil base 560. In this embodiment, the shielding filter 540 is disposed between the uneven structure of the base plate 510 and the coil base 560 . The shielding filter 540 may be firmly fixed between the concave-convex structure and the coil base 560 .

A first cover part 513 may be provided at a position adjacent to an edge of the base hole 512 . The first cover part 513 may cover a portion of an edge of the shielding filter 540 . An edge of the shielding filter 540 may be compressed. Therefore, electromagnetic waves generated from the first heat source module 400 may not leak toward the working coil 570 through the gap between the shielding filter 540 and the coil base 560 .

The base plate 510 and the coil base 560 may be aligned in X-axis and Y-axis directions, and the first heat source module ( Electromagnetic waves generated in 400) may be prevented from leaking.

Also, an edge portion of the shielding filter 540 may be pressed. The shielding filter 540 may be fixed in the X-axis and Y-axis directions, respectively. Therefore, the shielding filter 540 can be firmly fixed without using fasteners such as screws.

The mounting bracket 530 may connect between the base plate 510 and the supporter 520 . The mounting bracket 530 has a substantially circular frame shape, and a bracket penetrating portion 532 may be formed in the center thereof. As shown in FIG. 6 , the mounting bracket 530 may include a lower bracket portion 531 having a relatively wide diameter and an upper bracket portion 534 having a relatively narrow diameter. Also, the bracket lower portion 531 and the bracket upper portion 535 may be connected by an inclined bracket connecting portion 533.

At this time, since the mounting bracket 530 is disposed between the base plate 510 and the supporter 520, the distance between the base plate 510 and the supporter 520 is at least equal to the height of the mounting bracket 530. can be separated The coil assembly 550 may be disposed in the spaced apart space between the base plate 510 and the supporter 520 . The height of the bracket connection part 533 may be the height of the mounting bracket 530 .

A bracket heat dissipation hole 535 for heat dissipation may be formed in the bracket connection part 533 . The bracket heat dissipation hole 535 may be opened laterally. Heat between the supporter 520 and the base plate 510 can be discharged through the bracket heat dissipation hole 535, and conversely, outside air is introduced into the bracket heat dissipation hole 535 to form the coil assembly 550. ) can be cooled.

A shielding filter 540 may be disposed between the cover plate 580 and the coil assembly 550 . The shielding filter 540 has a substantially disk structure and may cover the top of the working coil 570 . The shielding filter 540 may prevent electromagnetic waves generated from the first heat source module 400 from being transferred to the working coil 570 . The shielding filter 540 may be made of any one of graphite, graphene, carbon fabric, carbon paper, carbon felt, graphite, and graphene.

As such, when the shielding filter 540 is made of any one of graphite, graphene, carbon fabric, carbon paper, and carbon felt, the shielding filter 540 may exhibit excellent microwave shielding performance due to high electrical conductivity. In addition, since the shielding filter 540 maintains heating by the second heat source module 500, heating performance of the second heat source module 500 can be maximized. In addition, if the shielding filter 540 is made of any one of graphite, graphene, carbon fabric, carbon paper, and carbon felt, it may be easy to dissipate heat heated by microwaves due to its high thermal conductivity.

In this embodiment, the shielding filter 540 may be configured by stacking a graphite sheet and a mica sheet (mica). At this time, the mica sheet may be relatively thicker than the graphite sheet. For example, when the thickness of the graphite sheet is 0.2 mm, the thickness of the mica sheet may be 1.0 mm.

The diameter of the shielding filter 540 may be larger than that of the working coil 570 and smaller than the diameters of the cover plate 580 and the supporter 520 . Accordingly, the shielding filter 540 may completely cover the upper part of the working coil 570 to block microwaves transmitted to the working coil 570 . Conversely, the shielding filter 540 can smoothly transfer the magnetic field generated by the working coil 570 upward through the cover plate 580 .

The shielding filter 540 may be fixed to the second heat source module 500 without a separate fastener. If a fastener is used, microwaves may be introduced toward the working coil 570 through a hole for fastening the fastener or a screw thread to affect the working coil 570 . In addition, arc discharge may occur due to concentration of an electric field at the corner of the hole or a sharp threaded portion, and there is a risk of fire. Therefore, in this embodiment, a structure for fixing the shielding filter 540 without fasteners is applied.

The coil base 560 of the coil assembly 550 has a substantially circular shape, and a working coil 570 may be wound and disposed on the coil base 560 . A temperature sensor (not shown) may be disposed at the center of the coil assembly 550 . The temperature sensor may measure the temperature of the second heat source module 500 . Based on the temperature of the second heat source module 500 measured by the temperature sensor, the user may adjust the temperature of the second heat source module 500 . Although not shown, the coil assembly 550 may further include ferrite, a ceramic magnetic material containing iron oxide (Fe2O3) as a main component, in order to increase the density of the magnetic field formed by the working coil 570.

A cover plate 580 may be disposed in the base hole 512 of the base plate 510 . The cover plate 580 may have a substantially disc shape. The cover plate 580 may cover the base hole 512 and make an upper surface of the second heat source module 500 have a flat structure. The cover plate 580 may be made of a non-metallic component to allow the magnetic field of the working coil 570 to pass through. The cover plate 580 may be made of a glass material having heat resistance (eg, ceramic glass). The cover plate 580 may dissipate heat from the shielding filter 540 .

Looking at the process of assembling the second heat source module 500 , a mounting bracket 530 may be coupled to the base plate 510 in a state where the base plate 510 is turned over. The mounting bracket 530 may be disposed around the base hole 512 . The mounting bracket 530 may be seated on the base plate 510 and coupled to each other by welding or the like.

In this state, the shielding filter 540 may be coupled to cover the base hole 512 of the base plate 510 . The shielding filter 540 is simply seated on the base plate 510, and a fastening process by welding or fasteners is not performed.

Subsequently, a coil assembly 550 and a supporter 520 may be stacked on top of the shielding filter 540 . Since the coil base 560 of the coil assembly 550 is larger than the shielding filter 540, it can completely cover the shielding filter 540.

In this state, the supporter 520 may be seated above the coil assembly 550, and the supporter 520 and the coil base 560 may be fastened to each other by a fastener such as a screw. In addition, the supporter 520 and the mounting bracket 530 may also be fastened to each other by fasteners such as screws. At this time, since the mounting bracket 530 is first coupled to the base plate 510, the supporter 520 and the coil assembly 550 are also connected to the base plate 510 via the mounting bracket 530. ) can be combined.

In this process, the shielding filter 540 may be pressed between the base plate 510 and the coil base 560 . That is, the shielding filter 540 can be pressurized and firmly fixed without a separate fastener.

Next, the third heat source module 600 will be described with reference to FIGS. 7 to 11 . The third heat source module 600 is disposed above the cases 100 and 200 . The third heat source module 600 may generate radiant heat inside the cavity (S). To this end, a heater unit 610 may be provided in the third heat source module 600 . The heater unit 610 may generate radiant heat downward, that is, toward the cavity S, and heat the upper portion of the food. The heater unit 610 may be a graphite heater. Such a heater unit may serve as a kind of broil heater, and the heater unit may be used for a grill using direct heat or radiant heat.

The third heat source module 600 may be fixed to the inner case 100 or the outer case 200 . In this embodiment, the third heat source module 600 may be fixed to the insulating top plate 270 . It can be seen that the third heat source module 600 is disposed in the first electrical compartment ES1. In addition, an outer top plate 230 is disposed above the third heat source module 600 so that the third heat source module 600 can be shielded. Referring to FIG. 1 , it can be seen that the third heat source module 600 is shielded by the outer top plate 230 .

The third heat source module 600 may be moved toward the bottom of the cavity S, that is, toward the second heat source module 500 . The moving assembly 630 is included in the third heat source module 600 to move the heater unit 610 . In this embodiment, since the heater unit 610 moves in the vertical direction, the heater unit 610 may be expressed as being elevated.

The third heat source module 600 includes a moving assembly 630 to which the heater unit 610 is mounted and which protects the heater unit 610, and is provided on the insulating top plate 270 to move the moving assembly 630 up and down. A fixing assembly 640 for controlling movement may be included. Further, the third heat source module 600 may further include a link assembly 650 provided on one side of the moving assembly 630 so that the moving assembly 630 is movably connected to the fixed assembly 640. there is. These structures will be described below.

The moving assembly 630 may be installed separately from the inner case 100 and the outer case 200 so as to move vertically inside the cavity S. It is preferable that the moving assembly 630 is configured to cover at least a side of the heater unit 610 so that heat from the heater unit 610 is concentrated downward and not dissipated to the side.

The moving assembly 630 may have several levels of height. For example, the moving assembly 630 may have a first stage located at the highest level, a second stage at an intermediate height, and a third stage located at the lowest level. When the moving assembly 630 is at the height of the third stage, the heat of the heater unit 610 transmitted to the food may be the strongest. The processor 700 may adjust the height of the moving assembly 630 step by step.

The moving assembly 630 may include a heater housing 632 that surrounds and protects the heater unit 610 and an insulating member 635 provided at one end of the heater housing 632 to block heat or electromagnetic waves. there is. As shown, the heater housing 632 may have a rectangular box shape. One or more holes through which hot air from the heater unit 610 can pass may be vertically formed on the bottom surface of the heater housing 632 .

The heater housing 632 may move up and down through a gap between the fixing frame 641 and the protective cover 276 to be described later. Accordingly, the heater housing 632 has a rectangular box shape with an open top and a predetermined thickness. It is preferable that the thickness of the four sides of the heater housing 632 is smaller than the size of the gap between the fixing frame 641 and the protective cover 276 .

A guide groove 633 in which a fixing guide 642 to be described later is selectively accommodated may be formed in the heater housing 632 . That is, as shown in FIG. 8, guide grooves 633 recessed from the top to the bottom to have a predetermined length are formed on the left and right side surfaces of the heater housing 632, and the moving assembly ( 630) is raised, the frame coupling part 643 of the fixing guide 642 is accommodated.

As shown, the insulating member 635 may have a square frame shape. It is preferable that the side end of the insulating member 635 protrudes outward more than the side end of the heater housing 632 . That is, the external size of the insulating member 635 is formed to be larger than the lateral size of the heater housing 632 so that when the moving assembly 630 rises, the gap between the fixed frame 641 and the protective cover 276 Through this, it can play a role in blocking electromagnetic waves from leaking to the outside.

The heater unit 610 may be accommodated and fixed inside the heater housing 632 . The heater unit 610 may be formed long in left and right or front and back, and it is preferable that a plurality of heater units 610 are installed at the inner lower end of the heater housing 632 . Referring to FIG. 5 , it can be seen that a total of three heater units 610 are disposed in the moving assembly 630 .

The three heater units 610 may operate independently. That is, only one of the three heater units 610 may be operated, two heaters may be operated, or all three heater units 610 may be operated simultaneously. The processor 700 may control the number of heater units 610 operated among the three heater units 610, or control the operating time of the three heater units 610, or the moving assembly The heights of the 630 and the heater unit 610 may be controlled.

Next, looking at the fixing assembly 640 , the fixing assembly 640 may be fixedly installed on the upper side of the heat insulation top plate 270 . The fixing assembly 640 may support the moving assembly 630 to move in the vertical direction while being supported on the top surface of the heat insulating top plate 270 . The fixed assembly 640 may include a moving control means 670 for forcing the moving assembly 630 to move up and down by the operation of the link assembly 650 .

The link assembly 650 may be provided on top of the moving assembly 630 . The link assembly 650 is configured to include one or more links, and may guide the moving assembly 630 to move up and down while being connected to the fixed assembly 640. At this time, upper and lower ends of the link assembly 650 may be rotatably connected to the fixed assembly 640 and the moving assembly 630, respectively.

The heat insulating top plate 270 may be regarded as a part of the fixing assembly 640 . Also, the fixing assembly 640 may include a fixing frame 641 provided on the upper side of the heat insulation top plate 270 to support the moving control unit 670 .

In this case, the fixing frame 641 may be installed to be spaced apart from the protective cover 276 of the heat insulating top plate 270 . More specifically, the protective cover 276 may also be configured to have a rectangular shape as a whole like the insulating top plate 270, and the central portion of the protective cover 276 can also be vertically positioned like the insulating top plate 270. A through hole may be formed to have a rectangular frame shape. Therefore, the moving assembly 630 can move up and down through the central hole of the insulating top plate 270 and the protective cover 276 .

Also, the fixing frame 641 may be formed in a square shape smaller than a square hole formed in the central portion of the protective cover 276 . Therefore, a predetermined gap is formed between the fixed frame 641 and the protective cover 276, and the heater housing 632 of the moving assembly 630 to be described below can move vertically through this gap.

The fixing frame 641 may be fixedly installed on the upper side of the heat insulation top plate 270 . To this end, a fixing guide 642 may be further provided between the insulating top plate 270 and the fixing frame 641 . As shown, the fixing guide 642 may have a substantially '∩' shape (when viewed from the front). Accordingly, the fixing guide 642 may have an upper end coupled to the fixing frame 641 and a lower end fixed to the insulating top plate 270 or the protective cover 276 .

Specifically, as shown in FIG. 7 , the fixing guide 642 is fixed to the frame coupling part 643 coupled to the fixing frame 641 and to the insulating top plate 270 or the protective cover 276. The upper coupling portion 644 may be formed, and the present invention illustrates a case in which the upper coupling portion 644, which is the lower end of the fixing guide 642, is fastened to the upper surface of the insulating top plate 270.

The fixing assembly 640 may be provided with a sliding rail 279 that supports a moving bracket 676 or a lead nut 673 to be described below in a sliding manner. The sliding rail 279 may be provided to have a predetermined length on the upper surface of the fixing frame 641 in left and right directions. A moving bracket 676 or a lead nut 673 to be described below may be installed on the sliding rail 279 to be movable left and right.

A moving control means 670 may also be provided on the upper side of the fixed frame 641 . The moving control unit 670 includes a motor 671 generating rotational power, a lead screw 672 provided on one side of the motor 671 and rotating in conjunction with the rotation generated by the motor 671, and the A lead nut 673 fastened to the lead screw 672 by screwing may be included.

The motor 671 generates rotational power, and a stepping motor or the like may be used for precise rotation control. Such a stepping motor may be capable of supplying forward and reverse rotational motion according to a rotational angle through pulse control.

As shown, the lead screw 672 may have a male screw formed on an outer surface of a thin cylinder having a predetermined length. A lead nut 673 having a female screw corresponding to the male screw of the lead screw 672 is fastened to this. Accordingly, when the lead screw 672 is rotated by the power of the motor 671, the lead nut 673 moves left and right along the lead screw 672. In this way, the lead screw 672 and the lead nut 673 play a role of changing forward/reverse rotational motion into linear motion.

Between the motor 671 and the lead screw 672, a connection coupling 674 connecting one end of the lead screw 672 and a motor shaft may be further provided. That is, as shown in FIG. 7 , a connection coupling 674 may be further provided at the right end of the lead screw 672 and the motor shaft protruding to the left of the motor 671 .

The motor 671 may be installed on a fixing bracket 675 fixedly mounted on the fixing assembly 640, and the lead nut 673 may be installed on a movable bracket 676 movably installed on the fixing assembly 640. ) can be installed. The movable bracket 676 is installed to be movably close to or away from the fixing bracket 675 on the upper side of the fixing frame 641 .

Specifically, the fixing frame 641 is spaced apart from the upper side of the insulation top plate 270 by the fixing guide 642, and a gap of a certain size is formed between the fixing frame 641 and the protective cover 276. formed to form a moving passage of the heater housing 632 to be described below.

When the lead screw 672 rotates according to the rotation of the motor 671 mounted on the fixed bracket 675, the lead nut 673 moves left and right, so that the movable bracket 676 moves along the sliding rail. It moves left and right along (279).

An upper end of a link of the link assembly 650 is rotatably installed in the fixed bracket 675 and the movable bracket 676 . That is, when the left and right upper ends of the 'X' shaped links provided in the link assembly 650 are connected to the fixed bracket 675 and the movable bracket 676, respectively, the movable bracket 676 moves left and right. According to this, since the left and right upper ends of the 'X'-shaped links become closer or farther apart from each other, the moving assembly 630 fixed to the lower end of the link assembly 650 moves up and down.

Meanwhile, the link assembly 650 has a configuration including one or more links, and has an upper end rotatably connected to the fixed assembly 640 and a lower end rotatably connected to the moving assembly 630 .

The link assembly 650 may include a pair of front links 651 and 652 and rear links 653 and 654 installed at a predetermined distance apart from each other in the front and back. Link frames 655 coupled to the moving assembly 630 may be further provided at lower ends of the front links 651 and 652 and the rear links 653 and 654 .

In addition, it is preferable that at least one of the left and right lower ends of the front links 651 and 652 and the rear links 653 and 654 be movably installed while being coupled to the link frame 655 . Specifically, the pair of front links 651 and 652 can be rotatably coupled with the center of rotation between the front 1 link 651 and the front 2 link 652 forming an 'X' shape as a rotation center. . Further, the pair of rear links 653 and 654 may be rotatably coupled to a center of rotation where the first rear link 653 and the second rear link 654 forming an 'X' shape cross each other.

The lower ends of the front 1 link 651 and the rear 1 link 653 installed at a predetermined distance from each other may be connected by a connecting link 658, and the front 2 link 652 and the rear 2 link 654 The lower end of may also be connected to each other by a connecting link 658.

It is preferable that at least one of the left and right lower ends of the front links 651 and 652 and the rear links 653 and 654 be movably installed while being coupled to the link frame 655 . In this embodiment, as shown, a case in which the lower ends of the front 1 link 651 and the rear 1 link 653 are movably installed to the left and right of the link frame 655 is illustrated.

Therefore, in the left half of the link frame 655, a 1-link protruding hole 657 may be formed in which the lower shafts of the front 1-link 651 and the rear 1-link 653 are inserted to guide the left and right roll movement. .

9 shows the moving assembly 630 in the first position, and FIG. 10 shows the moving assembly 630 in the second position. When the moving assembly 630 is in the second position, since the heater unit 610 is located closer to the food, the food can be heated more quickly. As shown in FIG. 10 , even when the moving assembly 630 is in the second position, the fixing guide 642 and the motor 671 constituting the fixing assembly 640 are fixed in their original positions without moving.

Meanwhile, FIG. 11 shows an ON state in which the elevation detection switch (SW) disposed on the heat insulating top plate 270 is pressed. The elevation detection switch (SW) is for detecting whether the moving assembly 630 is in the first position, which is the initial position. Through this, it is possible to detect whether the moving assembly 630 is raised or lowered. When the elevation detection switch (SW) is in the first position, it can be pressed by the moving assembly 630 to be in an ON state, and when it is in an ON state, the processor 700 moves the moving assembly 630 to the first position. it can be seen that there is When the moving assembly 630 descends from the first position down (to the second position or the third position), the elevation detection switch SW is released from being pressed and can be in an OFF state. When the elevation detection switch (SW) is turned OFF, the moving assembly 630 may descend from the first position. The processor 700 can determine whether the moving assembly 630 is in the first position or has descended by checking the ON and OFF states of the elevation detection switch SW. When the elevation detection switch SW is in an ON state, the moving assembly 630 may be in a first position in an initial state or a case in which it descends and returns to the first position again.

In this way, when the elevation detection switch SW is pressed and turned ON, the processor 700 may detect that the moving assembly 630 is in the first position and stop the motor 671 . That is, the processor 700 can stop the motor 671 to prevent the moving assembly 630 from rising higher than the first position. In this embodiment, the rising height of the moving assembly 630 can be limited by the lifting detection switch SW, and the falling height of the moving assembly 630 can be limited by the number of revolutions of the motor 671.

The elevation detection switch (SW) is disposed on the insulating top plate 270 or the fixing guide 642 to maintain a fixed state regardless of the movement of the moving assembly 630. In addition, the moving assembly 630 may be provided with an actuating pin (P) for operating by pressing the elevation detection switch (SW). Since the operating pin P is disposed on the moving assembly 630, it can be moved up and down together with the moving assembly 630.

At this time, an elastic drive unit ED may be provided in the elevation detection switch SW. The elastic driving unit ED may be a part that is actually pressed by the operation pin P. When the architect (P) presses the elastic driving unit (ED), the elastic driving unit (ED) can press the elevation detection switch (SW). Since the operation pin (P) is in the form of a pin with a very narrow upper end, it may not be possible to accurately press the contact portion of the elevation detection switch (SW). In this embodiment, since the operating pin (P) presses the wide surface of the elastic driving unit (ED) and the elastic driving unit (ED) presses the elevation detection switch (SW) again, stable driving is possible.

Both the lift detection switch (SW) and the elastic actuator (ED) may be provided in the switch bracket (SB). The switch bracket SB may be disposed on the fixing assembly 640 . In this embodiment, the switch bracket (SB) may be disposed on the fixing guide 642 of the fixing assembly 640.

As shown in FIG. 10 , in this embodiment, two elevation detection switches (SW) may be included in the third heat source module 600 . A pair of elevation detection switches (SW) may be disposed adjacent to the pair of fixing guides 642, respectively. Even if one of the pair of elevation detection switches (SW) is out of order, if the other elevation detection switch (SW) operates normally, it is possible to sense that the moving assembly 630 has returned to the first position. can Of course, only one elevation detection switch (SW) may be provided.

Referring to FIG. 2 , the cooking appliance includes cooling fan modules 810 and 850 . The cooling fan modules 810 and 850 are for cooling the cooking appliance, sucking in outside air, and supplying the air to the inside of the cavity S, sucking in air from the outside of the cooking appliance, and supplying air cooled inside the cooking appliance to the outside. can be emitted with In this embodiment, the cooling fan modules 810 and 850 include a first cooling fan module 810 and a second cooling fan module 850 . Both the first cooling fan module 810 and the second cooling fan module 850 may be disposed closer to the upper portion than the lower portion of the cavity S.

The first cooling fan module 810 and the second cooling fan module 850 may be disposed on the insulating top plate 270 . In this case, the first cooling fan module 810 and the second cooling fan module 850 may be disposed around the third heat source module 600 with the third heat source module 600 at the center. The cooling fan modules 810 and 850 arranged in this way can cool the third heat source module 600 in various directions. The first cooling fan module 810 and the second cooling fan module 850 may be disposed in directions orthogonal to each other. The cooling fan modules 810 and 850 arranged in this way may form a continuous passage through which air flows.

In addition, the first cooling fan module 810 and the second cooling fan module 850 may discharge air toward different surfaces among surfaces of the inner case 100 . The first cooling fan module 810 discharges air toward the rear surface of the inner case 100, more precisely toward the third electrical compartment ES3, and the second cooling fan module 850 discharges air toward the inner case ( 100), more precisely, air may be discharged toward the fifth battlefield ES5. The air discharged in this way may be joined in the second battlefield ES2 and discharged to the outside through the air discharge unit 243 .

When the third heat source module 600 is in the first position (see FIG. 9 ), the first cooling fan module 810 and the second cooling fan module 850 move around the heater housing 632 . When the third heat source module 600 is in the second position (see FIG. 10), the first cooling fan module 810 and the second cooling fan module 850 are the third heat source. The third heat source module 600 may be cooled as a whole while passing through the top of the module 600 .

Referring to FIG. 4 , a supply duct 910 may be disposed in the inner case 100 . The supply duct 910 is provided to cover the intake port 123 of the inner case 100 . The supply duct 910 may form a path through which air in the electrical compartment is introduced into the cavity (S). The air introduced into the cavity S through the supply duct 910 and the intake port 123 may remove moisture inside the cavity S. At this time, the air introduced through the intake port 123 may be part of the air that has a heat dissipation (cooling) action while passing through the inside of the case 100 or 200 .

The supply duct 910 may extend in a curved shape at one end. This is to avoid interference between the supply duct 910 and the wave guide 420 of the first heat source module 400 . That is, the supply duct 910 is disposed on the inner side plate 110 of the inner case 100 where the wave guide 420 is disposed, and the supply duct 910 has a height equal to that of the wave guide 420. It is placed differently.

One end of the supply duct 910 may cover the intake port 123, and the remaining portion may adhere to the outer surface of the inner side plate 110 to form a flow path therein. The supply duct 910 transfers the air discharged from the first cooling fan module 810 to the intake port 123, so that the air can be more smoothly supplied to the inside of the cavity S.

The exhaust duct 940 may cover the exhaust port 125 of the inner case 100 . The exhaust duct 940 is disposed in the fifth electrical compartment ES5 and can guide the movement of air discharged from the exhaust port 125 . The exhaust duct 940 may be disposed on the surface of the inner side plate 110 in the direction of gravity. Accordingly, the air inside the cavity S discharged through the exhaust port 125 may move downward. The air that has moved downward is guided to the second battlefield chamber (ES2) and can be discharged through the air outlet 243 of the out front plate 240.

The exhaust duct 940 may be disposed on the inner side plate 110 of the inner case 100 on which the processor 700 is disposed. That is, the exhaust duct 940 and the processor 700 may be disposed on the same surface of the inner side plate 110 . In this case, the exhaust duct 940 may be disposed farther from the door 300 than the processor 700 . Therefore, the air inside the cavity (S) can be discharged from the rear of the case (100, 200) far from the door (300), and the lower part of the second heat source module (500) in the process of being discharged along the second electrical compartment (ES2). , the second heat source module 500 may be cooled. The exhaust duct 940 may have a substantially long shape in a vertical direction.

For reference, in this embodiment, since the magnetron 410 is also disposed at a protruding part of the inner side plate 110 and consequently disposed in the third electrical cabinet ES3, the heating element is in the fourth electrical cabinet ES4. It can be said that is not placed. Therefore, even if the air barrier 950 blocks the space between the second and fourth electrical cabinet ES2 and ES4, the heat sources can be smoothly cooled.

12 is a component block diagram illustrating a connection relationship between components connected to a processor constituting one embodiment of a cooking appliance according to the present invention.

The processor 700 may be connected to the display module 350 . The display module 350 may include the input unit 351 and the display unit 352 . In this embodiment, the input unit 351 and the display unit 352 may be implemented as the display module 350 as an integrated module. The input unit 351 can receive an operation mode and an operation command for the operation of the cooking appliance from the user, and the display unit 352 can display the operation status of the cooking appliance and the cooking status of food to the outside. The processor 700 may control the operation of the cooking appliance when an operation mode and an operation command of the cooking appliance are input through the input unit 351 . As the operation mode of the cooking appliance, a cooking level and a cooking time are set. The cooking level may be a power level of the first, second, and third heat source modules 400, 500, and 600. The cooking time may be set in advance according to the cooking level, or may be set and changed by a user.

Referring to FIG. 13, an exemplary view of the input unit 351 is shown. The input unit 351 displays the cooking level images 353 of the first, second, and third heat source modules 400, 500, and 600, and when a user touches the cooking level image 353 to select a cooking level, the processor 700 The first, second and third heat source modules 400, 500 and 600 may be operated at the selected cooking level. The cooking level may range from 0 to 10, for example. Of course, these cooking levels can be changed. When the cooking level image 353 is touched, the touched image 353 may be emitted by an LED installed therein. When the cooking level 0 is selected, the corresponding heat source module is in an OFF state, and as the cooking level increases, power used or operating time may increase. 13 , for example, the first heat source module 400 has a cooking level of 4, the second heat source module 500 has a cooking level of 7, and the third heat source module 600 has a cooking level of 10. Selected examples are shown.

In addition, an elevation position image 354 of the third heat source module 600 may be displayed on the input unit 351 . When the user touches the lifting position image 354 and selects the lifting position, the processor 700 drives the link assembly 640 so that the height of the moving assembly 630 becomes the selected lifting height. When the lifting height image 354 is touched, the touched image 354 may be emitted by an LED installed inside.

FIG. 14 illustratively shows the power used according to the cooking level of the second heat source module 500 . The second heat source module 500 may be, for example, an induction heater. The cooking level may be an operation mode of the second heat source module 500 . When the cooking level is 0, the second heat source module 500 is turned off, and when the cooking level is 1, the second heat source module 500 is turned on for 6 seconds with power (440W) corresponding to the cooking level 3 and then for 6 seconds is OFF. When the cooking level is 2, the second heat source module 500 is turned on for 6 seconds with power (640W) corresponding to the cooking level 4 and then turned off for the next 6 seconds. From cooking level 4 to cooking level 10, power consumption is set differently. As the cooking level increases to 10, higher power consumption can be used.

At this time, in the case of the second heat source module 500, it can operate for a predetermined operating time with power used (shown in FIG. 14) corresponding to the cooking level input through the input unit 351. However, in the case of the first and third heat source modules 400 and 600, all of them can be operated for a predetermined operating time with power used corresponding to the cooking level 10 in FIG. 14 . That is, the 1.3 heat source modules 400 and 600 operate with the power used at the highest cooking level (ie, the maximum power used by the cooking appliance). The power consumption and operating time for each cooking level may be stored in a memory 701 to be described below.

In FIG. 12 , the processor 700 may control the operation of the first, second, and third heat source modules 400, 500, and 600 and the motor 671 according to the ON/OFF state detected by the elevation sensor SW. . The link assembly 640 is driven by the driving of the motor 671 so that the moving assembly 630 can be moved up and down. Also, the processor 700 may turn on/off the lighting unit 165 when an operation command for the lighting unit 165 is input.

The memory 701 may store used power and operating time of the first, second, and third heat source modules 400, 500, and 600. In this embodiment, the power used and operating time of the first heat source module 400 is 'power used for cooking level 10' and is turned on for 'selected cooking level x 3 seconds + 2 seconds'. The power used and operation time of the second heat source module 500 is 'power used corresponding to the selected cooking level' and is turned on for '12 seconds'. The power used and operating time of the third heat source module 600 is 'power used corresponding to the cooking level 10' and is turned on for 'selected cooking level x 10 seconds'. Of course, it is natural that both the power used and the operating time can be changed.

At this time, the operating time of the first, second, and third heat source modules 400 may include an operating time cycle including the time when the first, second, and third heat source modules 400, 500, and 600 are turned ON/OFF. . In this embodiment, the operating time cycle of the first heat source module 400 is a total of 32 seconds, of which the ON time is the aforementioned 'selected cooking level x 3 seconds + 2 seconds', and the OFF time is ON at a total of 32 seconds It becomes time minus time. The operation time cycle of the second heat source module 500 is 12 seconds in total, and all are ON times. The operation time cycle of the third heat source module 600 is 'selected cooking level x 10 seconds', and all are ON times.

Meanwhile, in the cooking appliance of this embodiment, all of the first, second, and third heat source modules 400, 500, and 600 may be operated, or only some of them may be operated. Alternatively, in another embodiment, all of the first, second, and third heat source modules 400, 500, and 600 may be operated simultaneously, or only one or selected two may be operated. At this time, operating all of the cookers simultaneously or operating one or two at a time may be determined according to the environment in which the cooking appliance is used. That is, it may be determined according to the allowable power of the place where the cooking appliance is used. Specifically, when the total power used when the first, second, and third heat source modules 400, 500, and 600 are simultaneously operated is greater than the allowable power of the place where the cooking appliance is used, the first, second, and third heat source modules (400, 500, 600) cannot be operated simultaneously. This is because when the first, second, and third heat source modules 400, 500, and 600 are all used at the same time, a circuit breaker operates due to overvoltage or overcurrent, thereby cutting off power. Therefore, when an operation command for operating all of the first, second, and third heat source modules 400, 500, and 600 is input, the processor 700 calculates the total usage when all of the first, second, and third heat source modules 400, 500, and 600 are simultaneously used. Electric power is compared with the allowable power, and if the total used power is less than the allowable power, the first, second, and third heat source modules 400, 500, and 600 are simultaneously operated. Since the three heat source modules (400, 500, and 600) cannot be operated simultaneously, they are individually operated.

If cooking is desired by operating all of the first, second, and third heat source modules 400, 500, and 600 even though the total power used is greater than the allowable power, the first, second, and third heat source modules 400, 500, and 600 Instead of operating simultaneously, the first, second, and third heat source modules 400, 500, and 600 may be operated alternately one by one.

In this embodiment, when the first, second, and third heat source modules 400, 500, and 600 are alternately operated, they are operated alternately according to a set operating sequence. The operation sequence at the time of alternating may be 'the second heat source module 500 → the third heat source module 600 → the first heat source module 400'. At this time, even during the alternating operation, the power use and operation time of the first, second, and third heat source modules 400, 500, and 600 depend on the power use and operation time stored in the memory 701.

As an example, when the first, second, and third heat source modules 400, 500, and 600 are alternately used, the power consumption and operating time for an example in which all the cooking levels of the first, second, and third heat source modules 400, 500, and 600 are set to 7 are selected. explain First, the alternating sequence is the second heat source module → the third heat source module → the first heat source module as described above. In alternating order, the second heat source module 500 is turned on for 12 seconds with a power consumption of 1120W corresponding to a cooking level 10, and then the third heat source module 600 is turned on with a power consumption of 1600W corresponding to a cooking level 10. It is turned on for 70 seconds (=cooking level 7×10 seconds), and immediately thereafter, the first heat source module 400 uses 1600W of power corresponding to cooking level 10 for 23 seconds (=cooking level 7×3 seconds + 2 seconds). ), and it is OFF for the remaining 9 seconds minus the 23 seconds that are ON out of the total of 32 seconds.

As another example, when the first, second, and third heat source modules 400, 500, and 600 are alternately used, the first heat source module 400 has a cooking level of 4, and the second heat source module 500 has a cooking level of 5. Looking at the case where the cooking level 0 is selected for the third heat source module 600, the alternating order is the same as 'second heat source module 500 → third heat source module 600 → first heat source module 400'. Accordingly, first, the second heat source module 500 is turned on for 12 seconds with power of 640 W corresponding to cooking level 4, and then the third heat source module 600 is turned on for 50 seconds with power of 1600 W corresponding to cooking level 10. do. Next, the first heat source module 400 should operate, but since the cooking level 0 is selected, the first heat source module 400 is turned off.

Meanwhile, in the cooking appliance of this embodiment, the cooking time may be input through the input unit 351 . When the input cooking time is greater than the operation time cycle of the first, second, and third heat source modules 400, 500, and 600, the operation is continuously repeated in the alternating order of the first, second, and third heat source modules 400, 500, and 600 within the cooking time. do. That is, the first, second, and third heat source modules 400, 500, and 600 alternately operate until the input cooking time ends.

In other embodiments of the present invention, the alternating order may of course be changed. However, in a preferred embodiment of the present invention, the alternating order is set to 'second heat source module 500 → third heat source module 600 → first heat source module 400'. The reason for operating the second heat source module 500 first is to first determine whether the container B is present in the cavity S. When the second heat source module 500 is operating, this is to first detect whether a container B is present on the upper surface of the second heat source module 500, and then to operate the cooking appliance only when the container B is present. will be. If there is no container B on the upper surface of the second heat source module 500, the cooking appliance does not operate. The container (B) may be detected by the camera module 730. Alternatively, the container B may be sensed by using a magnetic field changed by the container B during the flow of the magnetic field generated by the second heat source module 500 .

16 to 21 show another embodiment of the cooking appliance according to the present invention. 16 to 21, a fourth heat source module 1100 is further included in addition to the first heat source module 400 to the third heat source module 600 described above. The fourth heat source module 1100 is disposed on rear surfaces of the cases 100 and 200 . Also, the power supply unit 1770 is disposed on the upper surface of the case 100 or 200, not the rear surface of the case 100 or 200. Hereinafter, the same reference numerals are assigned to the same structures as those of the previous embodiment, detailed descriptions are omitted, and structures different from those of the previous embodiment will be described.

16 and 17, it can be seen that the power supply unit 1770 is disposed on the insulating top plate 270. The power supply unit 1770 includes a high-voltage transformer 1771. The high-voltage transformer 1771 is relatively bulky and generates high heat. Accordingly, it is important to effectively cool the high-voltage transformer 1771.

For reference, although the outboard plate 220 is shown in FIG. 16, the outboard plate 220 is omitted in FIG. 17. In FIG. 16 , the fourth heat source module 1100 may be disposed in the third electrical compartment ES3 formed between the outer thick plate 220 and the insulated thick plate 280 . Referring to FIG. 17 , it can be seen that the fourth heat source module 1100 is provided on the insulated thick plate 280 disposed in front of the out thick plate 220 . The fourth heat source module 1100 may be a convection heater. That is, the fourth heat source module 1100 may provide heat for convectively heating food inside the cavity S.

As such, in this embodiment, the first heat source module 400, the second heat source module 500, the third heat source module 600, and the fourth heat source module 1100 are located in different control rooms of the cases 100 and 200, respectively. can be placed. In other words, it can be seen that the first heat source module 400, the second heat source module 500, the third heat source module 600, and the fourth heat source module 1100 are disposed on different surfaces of the cases 100 and 200. may be Also, the plurality of heat sources may constitute different types of heat sources. Accordingly, the plurality of heat sources may provide different types of heating means to the food in different directions.

The fourth heat source module 1100 may be a kind of convection heater. The fourth heat source module 1100 may serve to increase the uniformity of cooking by generating convective heat in the cavity (S) together with a convection fan. Unlike this, the convection fan may be omitted from the fourth heat source module 1100, and radiant heat may be provided to food using a hot wire, similarly to the third heat source module 600.

Referring to FIG. 17 , the fourth heat source module 1100 may include a convection housing 1110. The convection housing 1110 is disposed on the insulating thick plate 280, a convection chamber is formed inside the convection housing 1110, and a convection heater (not shown) may be disposed in the convection chamber. The convection heater may be formed as a bar type having a predetermined length and diameter. For example, the convection heater may be a sheath heater in which a protective tube of a heating wire is made of metal. Alternatively, the convection heater may be a carbon heater, a ceramic heater, or a halogen heater in which a filament is sealed inside a tube made of a transparent or translucent material.

A motor bracket 1130 may be disposed on the convection housing 1110, and a convection motor 1120 may be mounted on the motor bracket 1130. The convection motor 1120 may rotate a convection fan (not shown) inside the convection housing 1110 . When the convection fan rotates by the convection motor 1120, heat from the convection heater convects inside the cavity S to heat food. Reference numeral 1150 denotes a discharge unit through which heat inside the convection chamber is discharged to the outside.

When the fourth heat source module 1100 is operated, power is applied to the convection motor 1120 to rotate the convection fan, and power is applied to the convection heater to heat the convection heater. Therefore, forced convection is formed between the cavity (S) and the convection chamber inside the convection housing 1110 by the convection fan, and the forced convection by the convection fan receives heat from the convection heater and becomes hot air so that the cavity (S) Let the internal temperature rise and the food can be heated.

16 shows the first cooling fan module 1810. The first cooling fan module 1810 may be disposed on the insulating top plate 270 . The first cooling fan module 1810 includes a first fan housing 1817. A first fan motor 1820 may be provided on one side of the first fan housing 1817 . A rotation shaft (not shown) is connected to the first fan motor 1820, and a first fan blade 1825 is coupled to the rotation shaft.

The first fan blade 1825 may discharge air downward, that is, in the direction of gravity. Referring to FIG. 19 , air is discharged downward from the first cooling fan module 1810 . The discharged air may be discharged into the third battlefield ES3. Since the fourth heat source module 1100 and the magnetron 410 of the first heat source module 400 are disposed in the third electrical compartment ES3, they can be cooled by the first cooling fan module 1810. there is.

In addition, the air discharged from the first cooling fan module 1810 may pass through the third electrical compartment ES3, move downward, and be introduced into the second electrical compartment ES2. And, as shown in FIGS. 19 and 20, some of the air discharged from the first cooling fan module 1810 travels along the supply duct 910 toward the front door 300 (direction of arrow ③ in FIG. 18). It can move and can be induced in the inner direction (arrow ④) of the cavity (S).

Referring to FIG. 16 again, the second cooling fan module 1850 is shown. Like the first cooling fan module 1810, the second cooling fan module 1850 cools the cooking appliance and allows external air to be smoothly supplied into the cavity S. Looking at the structure of the second cooling fan module 1850, the second cooling fan module 1850 includes second fan housings 1857a and 1857b forming a skeleton and one side of the second fan housing 1857a and 1857b. A second fan motor 1860 disposed in may be included.

The second fan housings 1857a and 1857b may include a first driving housing 1857a and a second driving housing 1857b respectively disposed on both sides. A second fan motor 1860 may be disposed between the first driving housing 1857a and the second driving housing 1857b. A rotation shaft (not shown) is connected to the second fan motor 1860, and a pair of second fan blades 1865a and 1865b are coupled to the rotation shaft. The rotation shaft may extend from the second fan motor 1860 to both sides, and a pair of second fan blades 1865a and 1865b may be coupled to both sides of the rotation shaft, respectively.

At this time, the pair of second fan blades 1865a and 1865b are respectively disposed inside the first driving housing 1857a and the second driving housing 1857b. And, one (1865a) of the pair of second fan blades (1865a, 1865b) discharges air in the direction of gravity, and the other (1865b) discharges air in a direction orthogonal thereto, that is, in the direction of the first battlefield chamber (ES1). air can be expelled. Referring to FIG. 21, since the first driving housing 1857a is open downward, the second fan blade 1865a provided in the first driving housing 1857a can discharge air downward (in the direction of arrow ②). there is. Accordingly, the processor 700 disposed in the fifth electrical compartment ES5 may be cooled.

Meanwhile, referring to FIG. 17, the outlet 1857b' of the second driving housing 1857b is open toward the side of the first electrical compartment ES1. Accordingly, the second fan blade 1865b disposed in the second driving housing 1857b passes through the outlet 1857b' of the second driving housing 1857b toward the first electrical compartment ES1, more precisely, Air may be discharged toward the power supply unit 1770 . Accordingly, the second cooling fan module 1850 may cool the power supply unit 1770 .

The air cooling the power supply unit 1770 may move downward. Referring to FIG. 21, after air is introduced into the second driving housing 1857b in the direction (arrow ④), it moves through the power supply unit 1770 toward the third electrical compartment ES3 (arrow ⑥). do. In this process, the fourth heat source module 1100 may be cooled.

18 to 21 show an air circulation structure inside the cooking appliance in this embodiment. Since the cooking appliance of this embodiment includes the first heat source module 400, the second heat source module 500, the third heat source module 600, and the fourth heat source module 1100, heat generated from these heat sources can be effectively absorbed. It needs to be cooled. Hereinafter, the cooling structure of the heat source and other components will be described.

First, looking at the parts requiring cooling in this embodiment, (i) the lighting device 790, the distance sensor 710, the third heat source module 600, and the third temperature sensor (Mido time) and the power supply unit 1770 need cooling, (ii) the second heat source module 500 needs cooling in the second electrical compartment ES2, and (iii) the fourth electrical compartment 500 in the third electrical compartment ES3. Cooling of the heat source module 1100 and the camera module 730 is required, and (iv) the processor 700, the humidity sensing module 750, the second temperature sensor 760, and the temperature are cut off in the fifth battlefield (ES5). Cooling of the switch (not shown) is required.

And, in order to cool them, the first cooling fan module 1810 and the second cooling fan module 1850 described above are provided in this embodiment. The first cooling fan module 1810 may cool the second electrical compartment ES2 and the third electrical compartment ES3, and the second cooling fan module 1850 may cool the first electrical compartment ES1, The second electrical chamber ES2 and the fifth electrical chamber ES5 may be cooled. Of course, since the first cooling fan module 1810 is also disposed above the cases 100 and 200, a portion of the first electrical compartment ES1 can be cooled. In addition, since the first cooling fan module 1810 discharges air toward the duct assembly 920 disposed in the third electrical compartment ES3, the first cooling fan module 1810 is inside the cavity (S). It can also serve as a supply of air.

Specifically, as shown in FIG. 16 , in this embodiment, both the air intake unit 242 through which external air is sucked in and the air discharge unit 243 through which air is discharged again are disposed on the front side of the cooking appliance. External air may be introduced through the upper front portion of the cooking appliance, circulate inside the cooking appliance, and then discharged again through the lower front portion. Therefore, even if the cooking appliance of this embodiment is installed in a built-in manner, smooth air circulation may be possible.

In addition, as shown in FIGS. 16 and 17, a plurality of electrical compartments are provided outside the inner case 100 of this embodiment, and air can effectively cool components while flowing through these electrical compartments. At this time, the air barrier 950 can prevent the air introduced into the second combat compartment ES2 from moving upward again through the fourth combat compartment ES4, and as a result, the air flows into the second combat compartment (ES4). After cooling the second heat source module 500 of ES2), it moves forward and is discharged through the air discharge unit 243.

Also, in this embodiment, the insulating upper plate 270 and the insulating thick plate 280 are disposed outside the inner case 100, respectively, so that heat inside the cavity S is not directly transmitted to the components. It can be seen that the insulated top plate 270 and the insulated thick plate 280 together with the first cooling fan module 1810 and the second cooling fan module 1850 perform a cooling function of the cooking appliance.

As shown in FIG. 16, the first cooling fan module 1810 is disposed on the insulated top plate 270, more precisely, from the center of the insulated top plate 270 to the third electrical cabinet ES3 and the fourth electrical cabinet. It is disposed in a position biased towards the room (ES4, left side of the drawing). The second cooling fan module 1850 is also disposed on the insulated top plate 270, more precisely, at a position biased from the center of the insulated top plate 270 toward the fifth electrical cabinet ES5.

Referring to FIG. 18 , the flow of air sucked by the first cooling fan module 1810 and the second cooling fan module 1850 is displayed. The air sucked through the outer plate 240 is introduced into the first cooling fan module 1810 . At this time, air may flow in two directions toward the first cooling fan module 1810 . At this time, the air introduced to the left side of the first cooling fan module 1810 (in the direction of arrow ①) is directed to the heater housing 632 of the third heat source module 600 and the outer top plate disposed on the left edge of the cases 100 and 200. (230, omitted in FIG. 16) can move along. Air introduced to the right side of the first cooling fan module 1810 (direction of arrow ②) may move between the heater housing 632 of the third heat source module 600 and the guide fence GF. .

As such, in the process of air being sucked into the first cooling fan module 1810, the distance sensor 710, the lighting device 790, and the third heat source module 600 may be cooled. In addition, the power supply unit 1770 disposed in the air flow path may also be cooled. Arrow ③ indicates a direction in which air sucked into the first cooling fan module 1810 passes through the power supply unit 1770 . Accordingly, the power supply unit 1770 may be cooled by the first cooling fan module 1810 .

At the same time, the second cooling fan module 1850 may also suck external air through the outer plate 240 . Air introduced in the direction of the second cooling fan module 1850 (arrow ④ direction) may cool the first electrical compartment ES1 while moving in the direction of the second cooling fan module 1850 . At this time, two types of air may be sucked toward the first driving housing 1857a and the second driving housing 1857b included in the second cooling fan module 1850 . Among them, the air sucked in the direction of the first drive housing 1857a can be introduced through the air intake part 242 of the out front plate 240, and the front of the first battlefield ES1 close to the door 300. can be cooled.

In addition, the air sucked by the first cooling fan module 1810 and the second cooling fan module 1850 moves downward of the cooking appliance. Referring to FIG. 19 , the air sucked in by the first cooling fan module 1810 is discharged downward, that is, in the direction of the third electrical compartment ES3 (direction of arrow ①). In this process, the magnetron 410 of the first heat source module 400 may be cooled. Since the magnetron 410 constituting the first heat source module 400 is disposed under the first cooling fan module 1810, the air discharged downward from the first cooling fan module 1810 (in the direction of arrow ①) is capable of cooling the magnetron 410 while moving. And, the air that has passed through the third electrical cabinet ES3 is introduced into the second electrical cabinet ES2 through the ventilation part 283 formed at the bottom of the insulating thick plate 280 .

Meanwhile, referring to FIG. 21, the air sucked into the first driving housing 1857a of the second cooling fan module 1850 is also discharged downward, that is, in the direction of the fifth electrical compartment ES5 (direction of arrow ④). . In this process, the processor 700, the humidity sensing module 750, and the second temperature sensor 760 disposed in the exhaust duct 940 may be cooled. In particular, since the processor 700 that generates high heat is disposed under the first driving housing 1857a, the processor 700 can be effectively cooled.

Subsequently, the air that has passed through the fifth electrical cabinet ES5 is introduced into the second electrical cabinet ES2, and the air cooled by the second heat source module 500 in the second electrical cabinet ES2 is the air It can be discharged outward (in the direction of arrow ③) through the discharge unit 243.

Meanwhile, air sucked into the second driving housing 1857b of the second cooling fan module 1850 may be discharged in a horizontal direction, not in a gravitational direction. More precisely, as shown in FIG. 19, the air sucked into the second drive housing 1857b passes through the outlet 1857b' (see FIG. 17) of the second drive housing 1857b to the first electrical compartment ES1. ) direction, that is, air may be discharged toward the power supply unit 1770. Accordingly, the second cooling fan module 1850 may cool the power supply unit 1770 .

The air cooling the power supply unit 1770 may move downward. Referring to FIG. 19, the air discharged from the second drive housing 1857b is discharged in the direction of the power supply unit 1770, and then moves downward toward the third battlefield ES3 (arrow ②). do. In this process, the fourth heat source module 1100 may be cooled. In the fourth heat source module 1100 , rough air may be finally introduced into the second battlefield ES2 and then moved forward to be discharged through the air discharge unit 243 .

In FIG. 21 , air can also be delivered in the direction of the second battlefield ES2 through the exhaust duct 940 . The exhaust duct 940 may guide the air discharged from the cavity S downward (in the direction of arrow ⑤) and deliver it to the second battlefield ES2. Also, the air discharged from the cavity S may be discharged outward (in the direction of the arrow ③) through the air discharge unit 243 .

At this time, the air introduced into the second electrical compartment ES2 by the first cooling fan module 1810 and the second cooling fan module 1850 only moves forward, and the fourth electrical compartment ES4 cannot be re-entered. This is because the air barrier 950 is disposed below the fourth electrical compartment ES4. As shown in FIG. 21 , the air barrier 950 may guide air forward.

Referring to FIG. 20, the appearance of the fourth battlefield ES4 is shown. As can be seen, the waveguide 420 constituting the first heat source module 400 and the supply duct 910 are disposed in the fourth electrical compartment ES4. Air discharged to the lower side (arrow ①) of the first cooling fan module 1810 may flow into the supply duct 910 . At this time, although not shown in FIG. 20 , when the duct assembly 920 provided in the supply duct 910 is opened, the air discharged from the first cooling fan module 1810 passes through the duct assembly 920 to the supply duct. (910). Air moving forward (in the direction of the arrow ③) along the supply duct 910 may be introduced into the cavity S through the intake port. Arrow ④ shows the direction of movement of the air introduced into the cavity (S). In FIG. 20 , an arrow ② indicates a direction in which the air discharged from the first cooling fan module 1810 and introduced into the second electrical compartment ES2 moves along the other side of the air barrier 950 .

The first heat source module 400 to the fourth heat source module 1100, the power supply unit 1770, the magnetron 410, the processor 700, and the like can be cooled through the flow of air. In addition, the flow channels of this embodiment induce air in a certain direction while preventing air from flowing backward, so that smooth cooling can be achieved. In particular, in the present embodiment, air flow can be generated by utilizing a space between parts even without a separate tube-shaped structure.

The above description is merely an example of the technical idea of the present invention, and various modifications and variations can be made to those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

100: inner case 110: inner side plate
120: inner thick plate 123: intake port
125: exhaust port 128: camera mounting part
160: inner top plate 165: lighting mounting part
200: Out case 210: Out side plate
220: Out plate 230: Out top plate
240: out front plate 242: air intake
243: air discharge unit 250: out lower plate
273: lighting penetration part 300: door
350: display module 351: input unit
352: display unit 400: first heat source module
410: magnetron 420: waveguide
500: second heat source module 550: coil assembly
560: coil base 570: working coil
580: cover plate 600: third heat source module
610: heater unit 630: moving assembly
632: heater housing 640: fixed assembly
651,652: forward link 700: processor
701: memory 710: distance sensor
730: camera module 770: power unit
771: high voltage transformer 810: first cooling fan module
850: second cooling fan module 910: supply duct
S: Cavity

Claims (14)

A case with a cavity formed therein;
a door provided in the case and opening and closing the cavity;
a first heat source module disposed on a side surface of the case;
a second heat source module disposed on the bottom surface of the case;
a third heat source module disposed above the case;
A processor controlling the operation of the first, second, and third heat source modules;
When an operation command for the first, second, and third heat source modules is input, the processor operates the first, second, and third heat source modules according to a comparison result between the total power used when operating the first, second, and third heat source modules and a preset allowable power. ,2,3 Cooking equipment that operates the heat source module. The cooking appliance of claim 1, wherein the processor simultaneously operates the first, second, and third heat source modules when the total power used is less than or equal to the allowable power. The cooking appliance of claim 1, wherein the processor alternately operates the first, second, and third heat source modules when the total power used is greater than the allowable power. The cooking appliance of claim 3, wherein the processor operates the second heat source module first when the first, second, and third heat source modules are alternately operated. The cooking appliance of claim 4 , wherein the processor operates the second heat source module when a container is detected on an upper surface of the second heat source module when the second heat source module is operated. The cooking appliance of claim 4, wherein the processor alternately operates the second heat source module, the third heat source module, and the first heat source module in order when the first, second, and third heat source modules are alternately operated. The method according to claim 6, further comprising an input unit for inputting cooking levels of the first, second, and third heat source modules, wherein the processor determines power consumption and operation of the first, second, and third heat source modules according to the input cooking levels. A cooking appliance that determines a time and alternately operates the first, second, and third heat source modules according to the power used and the operating time. The method according to claim 7, wherein the processor operates the second heat source module for a first set time with a first power corresponding to the input cooking level of the second heat source module, and the third heat source module operates as the second heat source. The input third heat source module is operated for a second set time × the cooking level of the input third heat source module with the second power corresponding to the maximum cooking level of the module, and the first heat source module is operated with the second power used as the input first heat source. A cooking appliance that operates for the cooking level of the module × the third set time and stops the operation for the fourth set time. The method according to claim 6, further comprising an input unit for inputting a cooking time, wherein the processor is configured to repeat the alternating operation until the input cooking time ends when the first, second, and third heat source modules are alternately operated. cooking equipment. The cooking appliance of claim 1 , wherein the first heat source module emits microwaves into the cavity, the second heat source module emits a magnetic field toward the cavity, and the third heat source module emits radiant heat toward the cavity. . In the control method of a cooking appliance in which first, second, and third heat source modules are respectively installed on the side, bottom, and top of a case having a cavity formed therein,
inputting operation commands of the first, second, and third heat source modules;
comparing total power used when the first, second, and third heat source modules operate simultaneously with a set allowable power;
and operating the first, second, and third heat source modules according to the comparison result. The method of claim 11 , wherein the first, second, and third heat source modules are simultaneously operated when the total power used is less than or equal to the allowable power. The method of claim 11 , further comprising alternately operating the first, second, and third heat source modules when the total power used is greater than the allowable power. The method of claim 13, wherein when the first, second, and third heat source modules are alternately operated, the second heat source module, the third heat source module, and the first heat source module are alternately operated in order. .

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