Air curtain fan with heating elements
US5984649A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1996 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Sep 24, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F1/0057
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A fan comprises blowing units, each including a squarely hollow casing, an electric motor incorporated into the casing and an axial impeller coupled to the motor for generating an air flow from an inlet toward nozzles; the casing having one end opened to form the inlet and the opposite end opened to form the nozzles; and a guide which projects into the casing to arrange the nozzles in a parallel pattern, in a slit shape and in rows; wherein each blowing unit has opposite side walls of the casing formed with openings for mounting heaters at locations corresponding upstream portions of outlets of the parallel nozzles, and the blowing units are coupled together at adjacent sides thereof to be arranged in a row so that the units have corresponding openings located in alignment with one another throughout the entire coupled units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.