Daikin Industries, Ltd.

Tatsuya Katayama

Hiromichi Ueno

Takazo Sotojima

Yoshiyuki Uemura

Keiji Komori

Masaaki Adachi

Daiki Kikutake

Shota Kamei

Kanetaka Miyazawa

Shogo Tsuchikawa

Arisa Kira

Yuta Yamamoto

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 cylinder end plate of a rotary compressor has a discharge port communicating with a discharge-side space, and the discharge port is formed such that as viewed in the axial direction of a drive shaft, part of an opening of the discharge port overlaps with the inside of a cylinder chamber, and the opening end face of the discharge port is inclined radially outward of the cylinder end plate.

Rotary compressor and refrigeration device

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 cylindrical casing, an electric motor, and a compression mechanism. The cylindrical casing has first and second end plates ends in an axial direction. The electric motor is a variable-speed electric motor. The electric motor is disposed in the casing in which a first space is sandwiched between the electric motor and the first end plate. The compression mechanism is disposed in the casing in which a second space is sandwiched between the compression mechanism and the electric motor. The compression mechanism is coupled with the electric motor. The rotational compressor satisfies 0.8≤(A+B)*D/(Vcc*Nmax)≤1.0. An axial length of the first space is A, an axial length of the second space is B, an inner diameter of the casing is D, a suction volume per rotation of the compression mechanism is Vcc, and a maximum rotational speed of the compression mechanism is Nmax.

Rotary compressor and air conditioner

An oil separator includes a cover attached to an opening portion on a discharge side of a compressor, a discharge flow path formed in an inside of the cover, and an oil separation portion configured to separate an oil from a fluid that has flowed out from the discharge flow path. A dividing wall portion partitions an internal space facing the opening portion into a plurality of spaces. The dividing wall portion is provided in the inside of the cover. The internal space is a discharge space into which a high-pressure gas refrigerant discharged from the compressor flows. Each of the plurality of spaces faces a high-pressure chamber in the opening portion so as to be in direct communication with the high-pressure chamber.

Oil separator

A compressor includes a drive mechanism and a compression mechanism having a discharge passage and a plurality of members disposed to overlap. The discharge passage includes a muffling chamber, an inflow passage connected to an inflow end of the muffling chamber, and an outflow passage connected to an outflow end of the muffling chamber. The muffling chamber is formed across two or more of the plurality of members. The compression mechanism includes first and second cylinders, and a second closing member that covers an opening surface a of the first cylinder and an opening surface of the second cylinder. The muffling chamber includes an expansion chamber having a passage sectional area larger than the inflow and outflow passages. The expansion chamber is formed across the second closing member, and the first and second cylinders.

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Osaka, Japan

Tatsuya Katayama