Electrostatic air cleaning system with air flow sensor
US5688308A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 30, 1995 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | May 30, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/34
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The electrostatic air cleaning system is mounted in a duct of a residential or commercial heating and cooling system to remove particles from the circulating air. The electrostatic air cleaning system includes an air flow sensor which turns the air cleaner off in response to the lack of air flow through the air duct. An air flow sensor circuit connected to the electrostatic air cleaner includes a thermistor which detects the lack of air flow in the duct and provides a signal in response to lack of airflow. The signal from the sensor causes the power supply to the electrostatic air cleaner to be disconnected when there is insufficient air flow through the air duct. The air flow sensor circuit is configured so that power will continue to be supplied to the electrostatic air cleaner from the power supply when the sensor is disabled for a variety of reasons. In this way, the electrostatic air cleaning system addresses the problems of the prior art by providing an air cleaning system with an air flow responsive sensor in which the disabling of the sensor does not deactivate the electrostatic air cleaner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.