Aircraft air contaminant collector device and method of use

Patent metadata

Field	Value
Publication number	US-11307119-B2
Application number	US-201916392187-A
Country	US
Kind code	B2
Filing date	Apr 23, 2019
Priority date	Apr 23, 2019
Publication date	Apr 19, 2022
Grant date	Apr 19, 2022

Abstract

An air contaminant collector device for use in an aircraft air contaminant analyzer, and a method for its use, are disclosed.

First claim

The invention claimed is:

1. An air contaminant collector device for use in an aircraft air contaminant analyzer comprising:
(A) an air contaminant collector comprising:
(a) a porous member having a thickness in a range of 50 micrometers to 200 micrometers, the porous member comprising metal electrical traces and microporous flow-through channels and a chemoselective zeolite coating, the porous member having a top surface and a bottom surface, wherein the porous member desorbs captured air contaminants while being uniformly heated to at least 400° C. for a controlled time period;
(b) a thin film resistive heater, capable of heating to a temperature that vaporizes captured air contaminants, wherein the heater is covered by the chemoselective zeolite coating and the heater is in contact with the top surface of the porous member and the heater receives current through metal electrical traces on the porous member and metal electrical traces on one or more tethers; and;

(B) an air contaminant collector base comprising:
(c) a first substrate, wherein the porous member and the thin film resistive heater are associated with the first substrate, wherein the bottom surface of the porous member contacts a top layer of the first substrate, the porous member and the heater being thermally insulated from the base, wherein the first substrate has channels providing one or more tethers connecting the porous member to the first substrate, the one or more tethers having metal electrical traces.

2. The device of claim 1 , wherein the top surface of the porous member comprises an insulating layer.

3. The device of claim 1 , wherein the chemoselective zeolite coating comprises a chemoselective hydrophobic zeolite coating.

4. The device of claim 1 , wherein the chemoselective zeolite coating comprises a chemoselective hydrophilic zeolite coating.

5. The device of claim 1 , wherein the porous member desorbs captured air contaminants while being uniformly heated to 550° C. for a controlled time period.

6. A method for capturing and desorbing captured air contaminants in aircraft air, the method comprising:
(A) passing aircraft air through an air contaminant collector comprising:
(a) a porous member having a thickness in a range of 50 micrometers to 200 micrometers, the porous member comprising metal electrical traces and microporous flow-through channels and a chemoselective zeolite coating, the porous member having a top surface and a bottom surface, wherein the porous member desorbs captured air contaminants while being uniformly heated to at least 400° C. for a controlled time period;
(b) a thin film resistive heater, capable of heating to a temperature that vaporizes captured air contaminants, wherein the heater is covered by the chemoselective zeolite coating and the heater is in contact with the top surface of the porous member and the heater receives current through metal electrical traces on the porous member and metal electrical traces on one or more tethers; and;
an air contaminant collector base comprising:
(c) a first substrate, wherein the porous member and the thin film resistive heater are associated with the first substrate, wherein the bottom surface of the porous member contacts a top layer of the first substrate, the porous member and the heater being thermally insulated from the base, wherein the first substrate has channels providing one or more tethers connecting the porous member to the first substrate, the one or more tethers having metal electrical traces;

(B) capturing air contaminants by the porous member; and
(C) uniformly heating the porous member to a temperature of at least 400° C. sufficient to vaporize the captured air contaminants and desorb the captured air contaminants.

7. The method of claim 6 , wherein the air contaminants comprise aerosols.

8. The method of claim 6 , wherein the air contaminants comprise particulates.

9. The method of claim 6 , wherein the air contaminants comprise gases.

10. The method of claim 7 , wherein the air contaminants comprise particulates.

11. The method of claim 7 , wherein the air contaminants comprise gases.

12. The method of claim 8 , wherein the air contaminants comprise gases.

13. The method of claim 10 , wherein the air contaminants comprise gases.

14. The method of claim 6 , wherein passing aircraft air through the porous member comprising a chemoselective zeolite coating comprises passing aircraft air through the porous member comprising a chemoselective hydrophobic zeolite coating.

15. The method of claim 6 , wherein passing aircraft air through the porous member comprising a chemoselective zeolite coating comprises passing aircraft air through the porous member comprising a chemoselective hydrophilic zeolite coating.

16. The method of claim 6 , comprising uniformly heating the porous member to 550° C. to vaporize the captured air contaminants and desorb the captured air contaminants.

Assignees

• Pall Corp

Inventors

• Mlcak Richard

Classifications

• B01D53/228

  characterised by specific membranes · CPC title

• G01N29/022 Primary

  Fluid sensors based on microsensors, e.g. quartz crystal-microbalance [QCM], surface acoustic wave [SAW] devices, tuning forks, cantilevers, flexural plate wave [FPW] devices (microdevices per se B81B) · CPC title

• G01N2291/0427

  Flexural waves, plate waves, e.g. Lamb waves, tuning fork, cantilever · CPC title

• G01N29/036

  by measuring frequency or resonance of acoustic waves · CPC title

• G01N2291/0422

  Shear waves, transverse waves, horizontally polarised waves · CPC title