US 11,754,429 B2
Multifunctional dust trap
Norbert Flerlage, Loeningen (DE); Christian Lampe-Juergens, Spelle (DE); Tobias Meimberg, Osnabrueck (DE); Andreas Wuchrer, Georgsmarienhütte (DE); and Ralf Schroeder Genannt Berghegger, Glandorf (DE)
Assigned to Honeywell International Inc., Charlotte, NC (US)
Filed by Honeywell International Inc., Morris Plains, NJ (US)
Filed on Nov. 11, 2020, as Appl. No. 16/949,697.
Prior Publication US 2022/0146297 A1, May 12, 2022
Int. Cl. G01F 15/12 (2006.01); B01D 45/16 (2006.01); B01D 46/00 (2022.01); B01D 46/42 (2006.01)
CPC G01F 15/125 (2013.01) [B01D 45/16 (2013.01); B01D 46/0032 (2013.01); B01D 46/4236 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A multifunctional dust trap for reducing an acoustic noise and dust filtering, the multifunctional dust trap comprising:
an inlet connected to a gas inlet of a gas meter;
a chamber, connected to the inlet, to receive a flow of a gas and to reduce an acoustic noise by a reflection at one or more inner surfaces of the chamber, wherein the chamber comprises:
a first wall to deflect the flow of the gas in a first direction, wherein the first wall directs the flow of the gas into a cross sectional area of the chamber, which reduces a velocity of the deflected gas such that a centrifugal force guides a plurality of dust particles carried by the gas towards a base of the chamber; and
a second wall to deflect the flow of the gas in a second direction, wherein the flow of the gas is deflected from the first direction to the second direction; and
an outlet, attached to the chamber, to enable an exit of a clean flow of the gas from the multifunctional dust trap such that the clean flow of the gas is directed away from one or more flow inlets of a flow tube installed within the gas meter resulting in a smooth flow of the gas in the flow tube, and
a plurality of ribs extending vertically in an upward direction from the base and transverse a direction of the flow of the gas, and wherein each of the plurality of ribs and/or one or more inner surfaces of the multifunctional dust trap comprises a coating of a sticky material.