Screw compressors
US8241014B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2009 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Aug 26, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2240/52
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A screw compressor includes a housing, a motor stator, a motor rotor, a helical screw rotor, a motor rotor stop, a screw fastener, and a third bearing. The helical screw rotor includes an extension section, a motor coupling section, a first supporting section, a helical screw section, and a second supporting section. The motor rotor stop includes two flange portions, wherein one flange portion is sleeved with the extension section and abuts axially upon the effective sensing section of the motor rotor. The third bearing is interposed between the other flange portion and the housing cap. The screw fastener extends through the motor rotor stop and is threadedly engaged into a thread hole of the helical screw rotor and then biases axially upon the motor rotor stop. Therefore, the motor rotor is secured more firmly, and that a compressor shaft maintains a stable running.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.