US 12,005,388 B2
Apparatus and methods for air filtration of HVAC systems
Olivier Centner, Toronto (CA); Gregor Luthe, Gronau (DE); Sean Casey, Toronto (CA); and Thomas Arthur Brooks, Ontario (CA)
Assigned to Smart Material Printing B.V., Enschede (NL)
Filed by Smart Material Printing B.V., Enschede (NL)
Filed on Jul. 25, 2023, as Appl. No. 18/225,928.
Claims priority of provisional application 63/392,219, filed on Jul. 26, 2022.
Prior Publication US 2024/0123390 A1, Apr. 18, 2024
Int. Cl. B01D 53/02 (2006.01); B01D 46/00 (2022.01); B01D 51/08 (2006.01); F24F 8/108 (2021.01); F24F 110/64 (2018.01)
CPC B01D 51/08 (2013.01) [B01D 46/0027 (2013.01); F24F 8/108 (2021.01); B01D 2273/24 (2013.01); B01D 2279/50 (2013.01); F24F 2110/64 (2018.01)] 18 Claims
OG exemplary drawing
 
1. A particle agglomeration system for agglomerating a fluid in a heating, ventilation and air conditioning (“HVAC”) system, the HVAC system comprising a duct, the duct having a rectangular shape, the duct having at least one dimension transverse to a direction of fluid flow through the duct of not less than 18 centimeters (“cm”), the particle agglomeration system comprising:
a first printed circuit board (PCB), the first PCB comprising a first array of piezoelectric sound generators;
a second PCB, the second PCB comprising a second array of piezoelectric sound generators;
a first channel between the first and second PCBs;
a third PCB, the third PCB comprising a third array of piezoelectric sound generators;
a fourth PCB, the fourth PCB comprising a fourth array of piezoelectric sound generators;
a second channel between the third and fourth PCBs;
a target-sized frame that:
positions the first PCB facing the second PCB at a first fixed distance therebetween, the first fixed distance being between 4 cm and 6 cm, the first fixed distance being oriented along the at least one dimension of the duct;
positions the third PCB facing the fourth PCB at a second fixed distance therebetween, the second fixed distance being between 4 cm and 6 cm, the second fixed distance being oriented along the at least one dimension of the duct; and
defines an unimpeded space, the unimpeded space having a third fixed distance therebetween, the third fixed distance being between 3 cm and 5 cm, the third fixed distance being oriented along the at least one dimension of the duct.