Remotely activated opposing/aiding air flow control register
US5533668A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 1, 1995 |
| Grant date | Jul 9, 1996 |
| Priority date | — |
| Expiry date | May 1, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/9682
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A bi-directional airflow controllable system for controlling flow of air through an air circulating system to at least one zone an air temperature of which is to be controlled is coupled to an airflow duct to aid or oppose airflow throughout the duct and the system to the zone. The bi-directional airflow controllable system includes a fan positioned to interact with air moving through the system and the duct. The fan is coupled to a motor to be energized to drive the fan in a forward or reverse direction. The fan when driven by the energized motor in a forward direction creates air pressure from the fan to oppose the flow of air from the airflow duct. The fan when driven by the energized motor in a reverse direction aids the flow of air from the airflow duct. A bi-directional airflow control unit is electrically coupled to the motor. The bi-directional airflow control unit is responsive to a desired temperature in the zone to cause the motor to be energized in a forward direction to oppose flow through the system until the desired zone temperature is attained. The control unit is additionally responsive to the desired temperature in the zone to cause the motor to be energized in a …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.