Fujitsu Semiconductor Limited

Mitsubishi Heavy Industries Thermal Systems, Ltd.

Takahiro Kono

Yasushi Hasegawa

Hirofumi Watatani

Tamotsu Owada

Shinichi Akiyama

Ryosuke Suemitsu

Akimasa Yokoyama

The present invention provides a control device for detecting an abnormal operation state of a compressor in a parallel refrigerator. The control device is a control device for a refrigerator that includes a plurality of compressors connected in parallel, and detects occurrence of surging and occurrence of droplet suction on the basis of a deviation between values of currents flowing through electric motors that is configured to drive each of the plurality of compressors, and an operation point indicated by the air volume and the compression ratio of the plurality of compressors.

Control device, refrigerator, control method, and abnormality detection method

A semiconductor device includes an insulation film formed above a semiconductor substrate, a conductor containing Cu formed in the insulation film, and a layer film formed between the insulation film and the conductor and formed of a first metal film containing Ti and a second metal film different from the first metal film, a layer containing Ti and Si is formed on the surface of the conductor.

Semiconductor device and method for manufacturing semiconductor device

Growing community of inventors

Tokyo, Japan

Takahiro Kono