Supply airflow control for dual-duct system
US4917174A · kind A · utility
11Cited by
9References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1988 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | Jul 25, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F3/052
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Two variable position supply air valves, one for modulating warm airflow to a comfort zone and the other for modulating cool airflow, each have a constant intermediate open position to provide at least a desired minimum airflow, and both can be controlled so that only one valve is open at any one time to minimize any mixing of the airstreams. Potentiometers are used to adjust the intermediate open position of each valve and to adjust at least one valve's relationship of valve opening to zone temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.