Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Hisahiro Nishitani

Kouji Kanzaki

Hirofumi Yoshimura

Masato Yamauchi

Toshiyuki Ishiguro

Fumihiko Migaki

Satoru Kodama

Kazunori Maeda

Kazuhiro Kawai

A microwave oven includes: heating chamber () for accommodating a heating object; magnetron () for heating the heating object accommodated in heating chamber (); blower () for cooling magnetron (); temperature detection device () for detecting a temperature of magnetron (); and a control device for controlling an output power of magnetron () on the basis of temperature information output from temperature detection device (), wherein temperature detection device () is disposed inside cooling fin () of magnetron (), and the control device controls magnetron () on the basis of the temperature information obtained before cooking is started, thereby reducing a temperature transfer loss of abnormal heat generated from magnetron () and efficiently transferring the heat.

Microwave oven

There is provided a high-frequency heating apparatus including a heating chamber that houses an object to be heated, a rotating turntable provided on a bottom surface of the heating chamber, on which the object to be heated is rotatably mounted; a high-frequency heating section () that heats the object to be heated which is housed in the heating chamber, a convection heater () for heating the heating chamber, a circulating fan () for supplying the heating chamber with heat of the convection heater () as hot air, and a grill heater () for heating the object to be heated, wherein the convection heater () and the grill heater () are separately disposed on an upper surface of the heating chamber, thereby allowing reduction in size of an external shape of the heating apparatus without sacrificing grill cooking performance and oven cooking performance.

High-frequency heating apparatus

The present invention provides a heating device including a heating compartment for holding an object-to-be-heated, an oven heater for heating the heating compartment, a circulation fan for supplying the heat of the oven heater to the heating compartment as hot air, a drive motor for driving the circulation fan, a grill heater in an upper part of the heating compartment, and a turntable on which the object-to-be-heated is mounted, the turntable being in the bottom of the heating compartment, in which the grill heater is disposed obliquely to a side surface of the heating compartment in a part of the upper part of the heating compartment.

Heating device

A high frequency heating apparatus is equipped with an oven hood fan, including a heating chamber for entering/deriving an article to be heated into/from the heating chamber, an electric power supplying apparatus for radiating electromagnetic waves into the heating chamber, a cooling fan for cooling the electric power supplying apparatus, another heat-cooking apparatus operated by gas or electric power, which is installed under an appliance main body, and a ventilation fan for sucking hot air from an air intake port, which is generated from the another heat-cooking apparatus, and for exhausting the sucked hot air. In the apparatus, wind which cools a heat generating unit of the electric power supplying apparatus by the cooling fan is joined onto an air intake path of the ventilation fan.

High frequency heating apparatus

A high frequency heating apparatus is equipped with an oven hood fan, including a heating chamber for entering/deriving an article to be heated into/from the heating chamber, an electric power supplying apparatus for radiating electromagnetic waves into the heating chamber, a cooling fan for cooling the electric power supplying apparatus, another heat-cooking apparatus operated by gas or electric power, which is installed under an appliance main body, and a ventilation means for sucking hot air from an air intake port, which is generated from the another heat-cooking apparatus, and for exhausting the sucked hot air. In the apparatus, wind which cools a heat generating unit of the electric power supplying apparatus by the cooling fan is joined onto an air intake path of the ventilation fan.

The present invention relates to heating cookers, particularly to a structure for ventilation and cooling of microwave ovens employing a range hood. The structure according to the present invention enhances the ventilation airflow and capacity of a heating chamber by enlarging diameter of a ventilating fan by forming a recess on an upper wall of the heating chamber and by disposing the ventilating fan in the recess. Also, an improvement in ventilation efficiency is achieved by disposing the ventilating fan of a larger diameter at either or both ends of a wave-guide, and dividing the airflow path into an evenly well balanced plurality of airflow paths. Moreover, an openable door is attached to either or both of an exhaust opening and an intake opening for the air to pass through an inner surface of the door, thereby keeping the soiled surface inconspicuous. Furthermore, a cooling fan for a machinery compartment is disposed on an upper part of the machinery compartment in order to widen the airflow path for further improvement of the cooling and ventilation efficiency.

Growing community of inventors

Nara, Japan

Hisahiro Nishitani