Method and system for reduction of unwanted gases in indoor air

Patent metadata

Field	Value
Publication number	US-11890571-B2
Application number	US-202017107430-A
Country	US
Kind code	B2
Filing date	Nov 30, 2020
Priority date	Nov 15, 2012
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

An air treatment system for at least partially removing at least one gaseous contaminant contained in indoor air of a room structured for human occupants. The system may comprise an air treatment assembly having an indoor air inlet configured to receive indoor airflow directly from a room, a regenerable adsorbent material configured to adsorb at least one gaseous contaminant contained in the indoor airflow, at least one airflow element for directing the indoor airflow to flow through the air treatment assembly, an indoor air outlet for expelling the indoor air, from the air treatment assembly back into the room, a purge air inlet configured to receive and direct purge air over and/or through the adsorbent material for removal of at least a portion of the at least one gaseous contaminant, and a purge air outlet for expelling the purge air out of the air treatment assembly.

First claim

What is claimed is:

1. An indoor space gaseous contaminant removal unit comprising:
a housing configured for placement within an indoor space, or, within or on an interior wall, window or interior ceiling of the indoor space, the housing including;
an indoor air inlet arranged on the housing so as to be directly exposed to the indoor space and configured to receive an indoor airflow directly from the indoor space without aid from a duct or conduit;
a regenerable adsorbent material configured during an adsorption cycle to adsorb at least one gaseous contaminant contained in the indoor airflow;
an indoor air outlet configured to expel the indoor airflow treated by the adsorbent material back into the indoor space without aid from a duct or conduit;
a purge air outlet configured to expel a purge air after removing at least a portion of the at least one gaseous contaminant adsorbed by the adsorbent material,

and
a controller configured to adjust at least one of the indoor air inlet and the indoor air outlet so as to reduce a concentration of the gaseous contaminant in the indoor air of the indoor space.

2. The unit of claim 1 , wherein the unit is used in conjunction with an independent air conditioning system and including components for circulating the indoor air, the air conditioning system configured to condition the indoor air including changing temperature and/or humidity of the indoor air.

3. The unit of claim 1 , wherein the gaseous contaminant is carbon dioxide.

4. The unit of claim 1 , further comprising one or more sensors for measuring or detecting a level of at least one gaseous contaminant and/or detecting a presence of the at least one gaseous contaminant, wherein the one or more sensors are configured to generate data for transmission to the controller.

5. The unit of claim 1 , further comprising an air flow element.

6. The unit of claim 5 , wherein the airflow element comprises at least one of a fan, a blower, a damper, and a shutter.

7. The unit of claim 1 , wherein the at least one gaseous contaminant is selected from the group consisting of: carbon dioxide, volatile organic compounds, sulfur oxides, radon, nitrous oxides and carbon monoxide.

8. The unit of claim 1 , wherein the adsorbent material comprises at least one of: activated carbon, carbon particles, solid supported amine, molecular sieves, porous silica, porous alumina, carbon fibers, metal organic frameworks, porous polymers and polymer fibers.

9. The unit of claim 1 , further comprising at least one cartridge wherein the adsorbent material is arranged therein.

10. The unit of claim 1 , wherein after the removal of the at least one gaseous contaminant adsorbed by the adsorbent material, the adsorbent material is regenerated.

11. An indoor space gaseous contaminant removal unit comprising:
a housing configured for placement within an indoor space, or, within or on an interior wall, window or interior ceiling, of the indoor space, the housing including:
an indoor air inlet configured to receive an indoor airflow directly from the indoor space without aid from a duct or conduit;
a regenerable adsorbent material configured during an adsorption cycle to adsorb at least one gaseous contaminant contained in the indoor airflow;
an indoor air outlet configured to expel the indoor airflow treated by the adsorbent material back into the indoor space without aid from a duct or conduit;
a purge air outlet configured to expel a purge air after removing at least a portion of the at least one gaseous contaminant adsorbed by the adsorbent material,

and
a controller.

Assignees

• Enverid Systems Inc

Inventors

• Meirav Udi
• Biran Israel
• Bechar Abraham

Classifications

• B01D53/04 Primary

  with stationary adsorbents {(B01D53/025 takes precedence)} · CPC title

• B01D53/0454 Primary

  Controlling adsorption (controlling temperature swing adsorption B01D53/0462, controlling pressure swing adsorption B01D53/047) · CPC title

• B01D2253/102

  Carbon · CPC title

• B01D2253/104

  Alumina · CPC title

• B01D2253/106

  Silica or silicates · CPC title