Kabushiki Kaisha Toyota Jidoshokki

Kazuhiro Onara

Tatsuya Koide

Hiroyuki Gennami

Yumin Hishinuma

Muneharu Murase

Shigehiro Kasho

Masato Tsukahara

An electrically-driven compressor is installed on an engine. Refrigerant is compressed with rotation of a rotating shaft in a compression unit. An electric motor is coupled to the rotating shaft and drives the compression unit through the rotating shaft. A housing accommodates the compression unit, the electric motor, and the motor drive circuit aligned in the listed order in the axial direction of the rotating shaft. The housing is internally provided with the discharge chamber through which the refrigerant compressed by the compression unit is discharged. A weight is attached to the housing and disposed in the discharge chamber in a manner that a resonance frequency of the electrically-driven compressor is shifted relative to a resonance frequency of the engine, the weight including a material having a specific gravity greater than a specific gravity of a constituent material of the housing.

Electrically driven compressor mounted on a vehicle engine having a weight inside to shift the resonance frequency of the compressor from that of the engine

An electric compressor includes a rotary shaft, an electric motor, a compression mechanism, and a housing. The electric motor has a stator including a cylindrical stator core and a coil that has a coil end. The housing has a suction port and a main passage through which a fluid is flowed. An introduction hole through which the fluid is introduced into the compression mechanism is disposed opposite from the main passage. The housing has a coil end area in which a coil end of is disposed. The suction port and the introduction hole are connected via the main passage and the coil end area. The housing further has a groove including a first groove portion and a second groove portion having a depth greater than the first groove portion. A cross sectional are of a first passage portion is smaller than a cross sectional area of the main passage.

Electric compressor

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Kariya, Japan

Kazuhiro Onara