Abstract: A heating device comprises a housing, a driving member a fan, a heating member and a cover. The housing is formed with a cavity and a plurality of holes communicating with the cavity. The driving member is disposed in the cavity and has a driving shaft extending along a first direction. The fan is disposed on the driving shaft and faces the holes. The heating element is disposed between the fan and the plurality of holes. The cover has annular steps. The diameter of the outer surface of the annular steps of the cover is gradually reduced in the first direction. The annular steps can accommodate pots of different diameter openings. With only one heating device that can be used with several pots, the user can cook different sizes of food, and save storage space and cost.

Abstract: A lid comprises a cover body (10), a rotating member (20) and a sensor (30). The cover body has a cover end (12) in a closing direction. The rotating member comprises a rotating portion (21) and a connecting portion (22). The rotating portion is rotatably disposed at the cover end, and the rotational axis of the rotating portion is perpendicular to the closing direction. The connecting portion is disposed at the rotating portion and extends perpendicularly to the rotational axis of the rotating portion. The sensor is disposed at the connecting portion and can rotate between an inoperative position near the cover end (12) and the working position away from the cover end under the driving of the rotating portion. The lid is capable of accurately detecting and controlling the temperature inside a cooking device, and accommodating the sensor.