Patent ID: 8003925
Filing Date: 2011-08-23
Classification: H05B

Abstract:
1. An induction heating cooking apparatus comprising: a main body having a top surface; a top plate covering the top surface of the main body and forming a main body outer shell, the main body outer shell having a discharge port formed therein; at least one heating coil provided below the top plate; a centrifugal discharge fan having a discharge fan suction portion configured to suck air therethrough and operable to discharge air inside the main body to outside through the discharge port formed in the main body outer shell, the centrifugal discharge fan comprising a boss, a flange connected to the boss, and a row of vanes disposed in an outer peripheral portion of the flange, the flange having a flange opening proximal to the boss; a drive motor operable to drive the centrifugal discharge fan and having a shaft with which the boss of the centrifugal discharge fan engages; a heat collecting duct accommodated within the main body and having a heat collecting opening formed therein, the heat collecting duct being configured and arranged such that air heated as a result of passage through the heating coil is sucked into the heat collecting duct through the heat collecting opening formed in the heat collecting duct; a first air flow passage for communicating between the heat collecting duct and the discharge port and accommodating the centrifugal discharge fan therein; and a second air flow passage for communicating between a discharge fan suction port, into which air of a temperature lower than that of air sucked into the first air flow passage is sucked, and the discharge fan suction portion through the flange opening, the second air flow passage accommodating the drive motor therein on a side of the flange opposite to the row of vanes; wherein the centrifugal discharge fan, when driven by the drive motor, sucks through the discharge fan suction portion air introduced into the first air flow passage and air introduced into the second air flow passage and having passed through the flange opening from a side of the drive motor to a side of the row of vanes, and cools the drive motor with the air discharged from the first air flow passage through the discharge suction portion after having been introduced from the discharge fan suction port into the second air flow passage and then flown past the drive motor.