System powered damper blade assembly for use in an air conditioning system
US4186876A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1977 |
| Grant date | Feb 5, 1980 |
| Priority date | — |
| Expiry date | Dec 7, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7784
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An air conditioning system having conditioned air supplied through at least one duct includes a damper blade assembly for varying the volume of conditioned air flow through said duct. A first inflatable bellows is connected to the damper blade assembly to vary the position thereof in said duct. The bellows is inflated in response to changes in the supply pressure of the conditioned air to maintain a substantially constant volume conditioned air flow downstream of said damper blade assembly. A second inflatable bellows is connected to the damper blade assembly for further varying the position thereof in the duct. The second inflatable bellows is inflated in response to the temperature of the air in the enclosure whereby the quantity of air discharged thereinto is reduced as the temperature of the enclosure approaches a predetermined level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.