It carries out refrigerated structure to leak air to centrifugal compressor who adopts high speed motor

The utility model relates to an improvement structure of compressor or air -blower, it carries out refrigerated structure to leak air to centrifugal compressor who adopts high speed motor sets up the runner, or sets up the runner in impeller shaft sealed (6) in casing (5) at the centrifugal compressor that uses high speed motor and centrifugal blower impeller (2) back, let in the coolant liquid in the runner, cools off the air that is leaked out by impeller (2) the back. The refrigerated leaks air cooling air bearing (7) to and leak the clearance between air introduction electric motor rotor (9) and the motor stator with the refrigerated, cool off motor (8). The unneccessary reservation is sealed and bearing clearance within a definite time from this, and the length of compressor and blower rotor can shorten, can improve the rotational speed of rotor. Compressed air's the tolerance of using can be reduced by a wide margin, compressor complete machine work efficiency has been improved.