Blower control system
US10711426B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 5, 2018 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Aug 23, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F11/0001
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A controller for controlling a system for mitigating the flow of vapors from contaminated soil into a building controls a blower pulling an exhaust from underneath the sub slab of the building and blowing the vapors away from the building. The blower is controlled by pressure sensors that measure the pressure drop across the sub slab. The sensors are monitored by the controller to make sure they all have a minimum pressure drop. If any of the sensors have an inadequate pressure drop, the blower speed is increased a small amount by the controller. If all of the sensors have adequate pressure drop, then the blower speed is decreased by a small amount. The controller then rechecks the pressure drops on a periodic basis and makes appropriate blower speed adjustments after each measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.