US 2010/0135840 A1 · SCREW COMPRESSOR

Abstract

A screw compressor comprising: a pair of male and female screw rotors; and an air-cooled heat exchanger, wherein the air-cooled heat exchanger is provided above a motor for driving the compressor body; wherein, with respect to a cooling wind for the air-cooled heat exchanger, the air-cooled heat exchanger is inclined to the upstream side; wherein the uppermost portion of a unit suction port for the air-cooled heat exchanger cooling winds is positioned below the uppermost portion of the air-cooled heat exchanger positioned at the uppermost portion; wherein the lowermost portion of the unit suction port for the air-cooled heat exchanger cooling wind is positioned below the lowermost portion of the air-cooled heat exchanger positioned at the lowermost portion; and wherein the cooling wind for the air-cooled heat exchanger is exhausted from a ceiling portion of the compressor unit. With this structure, it becomes possible to provide a compact screw compressor with less noise whose installation area can be reduced.

Claims20

Dependent claims

A screw compressor comprising:

a compressor body having a pair of male and female screw rotors;
an air-cooled heat exchanger for cooling a lubricating oil of the compressor;
an air-cooled heat exchanger for cooling a compressed air discharged from the compressor;
and a case for receiving the components described above,
wherein the screw compressor further includes:
a motor for driving the compressor disposed at the bottom of the case;
and a duct which takes in air from a lower portion of the case and discharges it from a ceiling portion and whose central part extends above an upper portion of the motor;
wherein the air-cooled heat exchanger is disposed at the central part of the duct in an inclined manner;
and
wherein a suction duct for suppressing noise of the air-cooled heat exchanger is provided closer to a suction side than to the central part of the duct.

7 more elements

Dependencies are inferred from the claim text.

Screw compressor

Life of this patent

Screw compressor

Life of this patent

Abstract

Claims20