Internal refrigerant gas circulation apparatus for a closed-type scroll compressor
US7393191B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2004 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Mar 12, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2240/807
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In the case where a radial fan is provided on the upper end side of a rotor to provide an air circulating flow containing refrigerant gas so as not to hinder the flow of lubricating oil in a motor chamber, by which a motor is cooled, in order to reduce the cost of the radial fan, the radial fan is constructed by combining a plurality of blades (fan blades) (242) formed radially in the range of approximately 180° opposed to an upper balancer (270) so as to have a height smaller than the height of the upper balancer (270), and a fan cap (260) including a fan cover portion (262) covering the top faces of the blades (242) and an engagement portion (263) fixed to the upper end side of the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.