Switchable filtration system
AssigneeTrane International Inc.
InventorsScott Wenger, Anthony W. Bruno
Life of this patent
Estimating the term…
Abstract
A switchable filtration system for a heating, ventilation, air conditioning, and refrigeration (HVACR) system is disclosed. The filtration system includes a first filter, a second filter, a switching apparatus, and a controller. The controller is configured to determine an air quality score. When the air quality score exceeds a predetermined threshold, the controller controls the switching apparatus to switch the first filter out of an active airflow path. When the air quality score is at or below the predetermined threshold, the controller controls the switching apparatus to switch the first filter into the active airflow path.
Claims20
A switchable filtration system for a heating, ventilation, air conditioning, and refrigeration (HVACR) system, the filtration system comprising:
- a first filter;
- a second filter;
- a switching apparatus;
- and
- a controller,
- wherein the controller is configured to determine an air quality score,
- wherein when the air quality score exceeds a first predetermined threshold, the controller controls the switching apparatus to switch the first filter out of an active airflow path,
- wherein when the air quality score is at or below a second predetermined threshold, the controller controls the switching apparatus to switch the first filter into the active airflow path.
A switchable filtration system for a heating, ventilation, air conditioning, and refrigeration (HVACR) system, the filtration system comprising:
- a first filter;
- a second filter;
- a switching apparatus;
- and
- a controller,
- wherein the controller is configured to determine whether a space is ready for a pre-occupancy purge or a post-occupancy purge based on a first predetermined schedule,
- wherein during the pre-occupancy purge or the post-occupancy purge, when a first measured condition exceeds a first predetermined threshold, the controller controls the switching apparatus to switch the first filter into an active airflow path;
- and when the first measured condition is at or below the first predetermined threshold, the controller controls the switching apparatus to switch the first filter out of the active airflow path.
Dependencies are inferred from the claim text.