Mitsubishi Electric Corporation

Ryuji Momose

Yoshikazu Yaji

Koichi Arisawa

Keisuke Uemura

Takaaki Takahara

Shigetoshi Ipposhi

Masaru Shinozaki

Katsuhiko Saito

Katsuyuki Amano

Kentaro Yonehara

Keisuke Iwasawa

Naoki Suetomi

Hayato Kurino

This disclosure provides an outdoor unit for an air-conditioning apparatus with improved reliability. The outdoor unit () includes a housing whose inside is divided into a fan chamber () and a machine chamber (). A compressor and a reactor that are heat-generating components are provided in a lower area of the machine chamber (). An electric board () including a printed circuit board () and an electric component (), and an electric component box () constituted by an inner box () and an outer box () and accommodating the electric board are provided above the heat-generating components. A lower face of the inner box (first thermal insulation plate) and a lower face of the outer box (second thermal insulation plate) constitute a double thermal insulation plate ().

Outdoor unit for air-conditioning apparatus

A cooling structure includes: a heat sink to be mounted to a heat generator; and a duct, which is mounted to the heat sink, and is configured to guide an air flow flowing around the heat sink to the heat sink, wherein the heat sink has an air flow passage configured to allow the air flow to pass through the air flow passage, wherein one end side of the duct is to be mounted to an upstream side of the air flow passage, and wherein another end side of the duct is to be extended from an upstream end portion of the air flow passage to an upstream side of the air flow.

Cooling structure and outdoor unit including cooling structure

A cooling-abnormality detecting system in which a heat generating component and a cooling component contact each other via a contact section, and the cooling component cools the heat generating component. The cooling-abnormality detecting system includes: a heat-generating-component-temperature detecting sensor, a heat-generating-component-power-consumption detecting sensor, a cooling-component-temperature detecting sensor, and a processor that calculates a heat resistance value of the contact section between the heat generating component and the cooling component and determines the presence or absence of an abnormality in the contact section.

Cooling-abnormality detecting system

[Problem] To provide a power converter capable of suppressing voltage dropping of the smoothing capacitor and suppressing a rush current at the time of power recovery, [Means for Resolution] When it is determined that a bus voltage Vdc detected by a DC voltage detecting unitis equal to or less than a predetermined reference voltage, a control deviceallows a DC load control unitto stop an operation of a DC load

Power converter with a variable reference voltage and inrush current limiting

Growing community of inventors

Tokyo, Japan

Ryuji Momose