Daikin Industries, Ltd.

Junpei Yamamoto

Takahiro Yokoyama

Tetsuo Nakata

Hitoshi Niinuma

Takayuki Miyajima

Takuya Mimura

A refrigeration apparatus includes a refrigerant circuit having a heat exchanger, a housing that houses at least the heat exchanger and is provided with a suction port on an upstream side of the heat exchanger, and a filter attached to the suction port of the housing. The filter is configured to be held not to come into contact with the heat exchanger. When air containing oil mist flows to the heat exchanger via the filter, at least a part of an oil component in the air containing oil mist is trapped by the filter.

Refrigeration device and oil cooling device

A motor drive apparatus includes a motor, a power converter, and a controller that controls the voltage supplied to the motor by the power converter. The power converter converts a voltage of a 400 V-class AC power supply to a voltage with an effective value lower than an effective value of the 400 V-class AC power supply. The power converter converts the voltage by a switching operation of a plurality of switching elements. The motor is configured so that a value of &#x3c6;&#xd7;Vx/Ld is greater than Pmax when an effective value voltage Vx=200 V. A d-axis inductance of the motor is Ld. A flux linkage of the motor is &#x3c6;. A maximum output of the motor in a device where the motor is mounted is Pmax. The controller has a control mode in which an effective value voltage higher than Vx is applied to the motor.

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Osaka, Japan

Junpei Yamamoto