Cooking appliance and control method thereof

A control method of a cooking appliance, the cooking appliance comprising:

• a casing having a cavity therein;
• a first heat source module, a second heat source module, and a third heat source module respectively arranged at different surfaces of the casing;
• and
• a main controller arranged at the casing to control operations of the first heat source module, the second heat source module, and the third heat source module,
• the control method comprising:
• inputting a cooking level into the main controller;
• and
• selecting, by the main controller, operation modes of the first heat source module, the second heat source module, and the third heat source module, respectively, in response to the input cooking level,
• wherein the casing comprises:
• an inner casing having the cavity therein;
• and
• an outer casing arranged outside the inner casing,
• wherein a plurality of electrical chambers are respectively defined in a space between the inner casing and the outer casing,
• wherein each of the plurality of electrical chambers corresponds to a different side of the inner casing,
• wherein at least a portion of the first heat source module, a lower part of the second heat source module, the third heat source module, and a power supply unit are disposed in the plurality of electrical chambers that are different from each other,
• wherein the main controller is arranged at a second side portion of the casing located opposite to a first side portion of the casing at which the first heat source module is arranged, and wherein the power supply unit is arranged between an inner rear plate of the inner casing and an outer rear plate of the outer casing.

A cooking appliance comprising:

• a casing having a cavity therein;
• a door provided at the casing and configured to open and close the cavity;
• a first heat source module to emit microwaves toward the cavity;
• a second heat source module to emit a magnetic field toward the cavity;
• and
• a third heat source module to emit radiant heat toward the cavity,
• wherein the first heat source module is arranged at a side surface of the casing, the second heat source module is arranged at a bottom surface of the casing, and the third heat source module is arranged at an upper portion of the casing,
• wherein the casing comprises:
• an inner casing having the cavity therein;
• and
• an outer casing arranged outside the inner casing,
• wherein a plurality of electrical chambers are respectively defined in a space between the inner casing and the outer casing, the plurality of electrical chambers comprising at least:
• a third electrical chamber provided between an inner rear plate of the inner casing and an outer rear plate of the outer casing;
• and
• a fourth electrical chamber provided between an inner side plate of the inner casing and an outer side plate of the outer casing,
• wherein the first heat source module comprises:
• a magnetron configured to oscillate microwaves;
• and
• a wave guide coupled to the magnetron and configured to guide the microwaves oscillated from the magnetron toward the cavity,
• wherein the magnetron is arranged in the third electrical chamber, and
• wherein the wave guide is arranged in the fourth electrical chamber such that the wave guide is open toward the inner side plate of the inner casing.