Fan-on detection and correction
US11175060B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 23, 2020 |
| Grant date | Nov 16, 2021 |
| Priority date | — |
| Expiry date | Jun 23, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A fan-on Fault Detection Diagnostic (FDD) and correction method comprising at least one method selected from the group consisting of: detecting a Heating, Ventilating, Air Conditioning (HVAC) fan is controlled by a fan-on duration setting or a continuous or intermittent fan-on duration setting or schedule, and performing at least one action selected from the group consisting of: providing at least one fan-on alarm message, overriding the fan-on duration setting or the fan-on duration schedule, and turning off the HVAC fan for a fraction of the fan-on duration setting or schedule. Turning off the HVAC fan is based on at least one method selected from the group consisting of: a variable duration, skipping a scheduled fan-on duration setting, based on a call for cooling/heating, based on a geofencing or occupancy sensor signal, and based on a user-selected fan-on duration setting or a user-selected fan-off duration schedule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.