Daikin Industries, Ltd.

Daiki Kikutake

Tatsuya Katayama

Keiji Komori

Yukihiro Inada

Chihiro Endou

Shota Kamei

Shogo Tsuchikawa

Yuuya Sunahara

Yuuya Sawada

A compressor unit includes a compressor and an accumulator. The compressor includes a vertically elongated first casing, an electric motor, a drive shaft, and a compression mechanism. The accumulator includes a vertically elongated second casing. In a frequency range between a value three times larger than a maximum compressor rotation speed and 1.25 times greater than the value when a first part is vibrated, an index showing a frequency response function of the second casing in a circumferential direction in a second part is 1.0 m/s/N or less. The first part is part of an upper part of a side surface of the first casing and is orthogonal to an alignment direction of the compressor and the accumulator, and the second part is part of an upper part of a side surface of the second casing and is opposed to a part facing the first casing.

Compressor unit

A compressor is mounted on a product. The compressor includes a drive shaft having an eccentric shaft portion, an electric motor with a rotor, a compression mechanism, a balancer forming a rotary system with the drive shaft and the rotor, a casing, a suction pipe, and a discharge pipe. The compression mechanism has a piston and cylinder to form a fluid chamber, and a blade dividing the fluid chamber into low and high pressure chambers. At a connection portion of the compressor with the product, a composite vibration is a first vibration or less, the composite vibration is a synthesis of the first vibration due to torque according to a pressure difference between the low and high pressure chambers, a second vibration due to an inertial force acting on the piston by the eccentric rotational movement, and a third vibration due to a centrifugal force acting on the rotary system.

Compressor and refrigeration device

A rotary compressor includes a drive mechanism, a compression mechanism, an introduction path to introduce a fluid into a compression chamber of the compression mechanism, and a backflow suppression mechanism. At least one of a first surface and a second surface of a valve body includes an annular first non-contact region that is formed in a predetermined range extending radially inward from an outer edge of the valve body and that does not come into contact with a corresponding valve seat, an annular second non-contact region that is formed in a predetermined range extending radially outward from the hole of the valve body and that does not come into contact with a corresponding valve seat, and a contact region that is formed between the first non-contact region and the second non-contact region and that comes into contact with a corresponding valve seat.

Rotary compressor with backflow suppresion mechanism for an introduction path

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Osaka, Japan

Daiki Kikutake