US 12,078,186 B2
Locking structure of compressor impeller and installation method, centrifugal compressor and refrigeration system
Huiliang Zhang, Shanghai (CN); and Kai Deng, Shanghai (CN)
Assigned to CARRIER CORPORATION, Palm Beach Gardens, FL (US)
Filed by Carrier Corporation, Palm Beach Gardens, FL (US)
Filed on Jan. 12, 2023, as Appl. No. 18/153,685.
Claims priority of application No. 202210043508.4 (CN), filed on Jan. 14, 2022.
Prior Publication US 2023/0228276 A1, Jul. 20, 2023
Int. Cl. F04D 29/26 (2006.01); F04D 29/28 (2006.01)
CPC F04D 29/266 (2013.01) [F04D 29/284 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A locking structure of a compressor impeller, comprising:
a rotary shaft;
a lock nut, arranged on an end of the rotary shaft by means of a threaded connection and provided with elongated holes extending along a circumferential direction thereof;
an impeller, sleeved on the end of the rotary shaft and located on an inner side of the lock nut, wherein the impeller is provided with threaded holes in communication with the elongated holes of the lock nut;
a nose piece, located on an outer side of the lock nut and provided with through holes in communication with the elongated holes of the lock nut; and
bolts, passing through the through holes and the elongated holes in turn into the threaded holes, thereby fixing the nose piece, the lock nut and the impeller together.