Outdoor unit of air conditioner and refrigeration cycle device
US10495328B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2015 |
| Grant date | Dec 3, 2019 |
| Priority date | — |
| Expiry date | Nov 2, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F1/40
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A casing has a wall portion surrounding an impeller, as seen in an axial direction of a rotating shaft. The wall portion of the casing has a portion, and a portion located further away from a center of rotation of the rotating shaft than the portion, as seen in the axial direction. A curved portion has a curved surface portion located on a line connecting the center of rotation and the portion, and a curved surface portion located on a line connecting the center of rotation and the portion, as seen in the axial direction. A radius of curvature of the curved surface portion is greater than a radius of curvature of the curved surface portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.