US 12,265,009 B2
Test chamber apparatus for assessing filter media
Julia Hoeng, Corcelles (CH); Arkadiusz Kuczaj, Courtaman (CH); Antonin Sandoz, Neuchâtel (CH); and Sandro Steiner, Arch (CH)
Assigned to Philip Morris Products S.A., Neuchâtel (CH)
Appl. No. 18/001,971
Filed by PHILIP MORRIS PRODUCTS S.A., Neuchâtel (CH)
PCT Filed Jun. 25, 2021, PCT No. PCT/IB2021/055693
§ 371(c)(1), (2) Date Dec. 15, 2022,
PCT Pub. No. WO2022/003517, PCT Pub. Date Jan. 6, 2022.
Claims priority of application No. 20183697 (EP), filed on Jul. 2, 2020.
Prior Publication US 2023/0228665 A1, Jul. 20, 2023
Int. Cl. G01N 1/22 (2006.01); G01N 15/08 (2006.01)
CPC G01N 15/0806 (2013.01) [G01N 1/22 (2013.01); G01N 2001/2282 (2013.01); G01N 2015/084 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An apparatus for assessing a filter medium of a test article, comprising:
a test chamber comprising an introduction opening on a surface of the test chamber, an inlet, and an outlet;
an introduction system configured to introduce a test pollutant through the introduction opening into the test chamber such that the test pollutant is entrained in air flowing from the inlet to the outlet;
a support configured to retain the test article, wherein the support defines a passageway downstream of a location of the test article such that air flowing from the inlet to the outlet passes through the filter medium prior to entering the passageway;
an air flow apparatus configured to draw air from within the test chamber through the passageway and the outlet, and also configured to introduce air through the outlet and the passageway into the test chamber
a test pollutant collector positioned in an airflow path within the passageway such that air drawn from the test chamber through the passageway contacts the test pollutant collector and
a respiratory conditions simulation system configured to simulate an aspect of respiration, or an external environment simulation system configured to simulate an aspect of an external environment, or both the respiratory conditions simulation system and the external environment simulation system.