Ventilation system and method
US6634939B2 · kind B2 · utility
31Cited by
11References
12Claims
0Family size
Inventor
Key dates
| Filing date | Aug 31, 2001 |
| Grant date | Oct 21, 2003 |
| Priority date | — |
| Expiry date | Aug 31, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A ventilation system includes one or more exhaust fans and one or more make up air fans. Each fan has is driven by a motor operating at a constant speed. Each fan and motor are coupled by a torque converter, so that the torque applied to the fan is constant. Exhaust fan speed varies according to the ideal gas law, whereby the fan speed automatically varies in response to changes in system conditions, such as temperature and the associated changes in air density and resistance to the fan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.