Denso Corporation

Nippon Soken, Inc.

Takashi Kusada

Shigeki Iwanami

Tadashi Hotta

Yoichiro Kawamoto

Taijirou Momose

Tetsuya Hyakutake

A power converter includes a converter casing made of an assembly of a first case body and a second case body. The first case body has a bottom plate. The second case body has a top plate. Side plates are arranged between the top plate and the bottom plate. A capacitor is disposed in the converter casing and includes a capacitor casing and a capacitor device which is sealed with potting resin so as to have a potting surface through which the potting resin is exposed outside the capacitor casing. The capacitor is fixed on the bottom plate with the potting surface oriented perpendicular to a normal direction of the bottom plate. A connector is provided which mechanically connects the bottom plate and the top plate and is located away from the side plates, thereby enhancing the suppression of mechanical vibration of the capacitor on the bottom plate.

Power converter designed to minimize mechanical vibration of converter component

An oil separator includes a separation part and an oil storage part. The separation part includes a separation cylinder, an inner cylinder disposed in the separation cylinder and an inlet pipe connecting to the separation cylinder tangential to an inner surface of the separation cylinder. The separation part defines an inlet opening to introduce COrefrigerant containing oil in the separation cylinder. The separation cylinder separates the oil from the COrefrigerant by means of centrifugal force. A ratio of a flow rate (kg/h) of the COrefrigerant flowing in the separation cylinder to an area (mm) of the inlet opening is at least 4. Alternative to or in addition to the above, a ratio of a distance (mm) from an end of the inner cylinder to a bottom wall of the separation cylinder to an inner diameter (mm) of the separation cylinder is at least 2.5.

Oil separator and refrigerant compressor having the same

Growing community of inventors

Okazaki, Japan

Takashi Kusada