# US 10,864,480 B2 · Portable carbon dioxide absorption system

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- Number: US 10,864,480 B2
- Document ID: US10864480B2
- Status: Granted
- Kind: B2
- Application number: 16/449,821
- Filed: 2019-06-24
- Published: 2019-10-10
- Granted: 2020-12-15
- Earliest claimed: 2017-06-22
- Assignees: Allied Healthcare Products, Inc.
- Applicants: Allied Healthcare Products, Inc.
- Inventors: Andrew D. Riley
- Web page: https://patentgrep.com/patent/US10864480B2

## CPC

- B01D 53/62: Carbon oxides
- B01D 53/0415: {Beds in cartridges}
- B01D 53/0454: {Controlling adsorption (controlling temperature swing adsorption B01D53/0462, controlling pressure swing adsorption B01D53/047)}
- B01D 53/1412: {Controlling the absorption process}
- B01D 53/1475: {Removing carbon dioxide}
- B01D 53/1493: {Selection of liquid materials for use as absorbents}
- B01D 53/185: {Liquid distributors}
- B01D 53/30: Controlling by gas-analysis apparatus (regulating non electrical variables in general G05D)
- B01D 53/346: {Controlling the process}
- B01D 53/78: with gas-liquid contact
- B01D 53/81: Solid phase processes
- B01D 53/82: with stationary reactants
- B01D 2252/20405: Monoamines
- B01D 2252/20421: Primary amines
- B01D 2252/20484: with one hydroxyl group
- B01D 2253/1124: Metal oxides
- B01D 2257/504: Carbon dioxide
- B01D 2258/06: Polluted air
- B01D 2259/4508: for cleaning air in buildings
- B01D 2259/4541: for portable use, e.g. gas masks
- B01D 2259/4575: in aeroplanes or space ships
- Y02A 50/20: Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02C 20/40: of CO2
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02C: CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]

## Abstract

Various embodiments of a portable carbon dioxide (CO2) absorption device that may remove excess CO2 from a closed environment are disclosed herein. The absorption device is reusable and configured for many environments.

## Claims

### Claim 1

A portable carbon dioxide absorption machine comprising:
a housing defining an inlet and an outlet;
a blower in fluid communication with the outlet and with a manifold system the blower being disposed within the housing, wherein the blower pulls air from the manifold system into the housing, and pushes the air from the housing through the outlet;
the manifold system comprising a manifold housing defining an expansion chamber; the expansion chamber disposed within the housing, wherein the expansion chamber filters and reduces a velocity of air pulled by the blower;
a carbon dioxide absorbing device disposed within the housing, the carbon dioxide absorbing device in fluid communication with the inlet and the manifold system, wherein the carbon dioxide absorbing device absorbs carbon dioxide from the air entering the inlet; and
a power supply disposed within the housing, wherein the power supply is in electrical communication with the blower.

### Claim 2 (depends on 1)

The portable carbon dioxide absorption machine of claim 1, wherein the blower generates a negative pressure to draw air external to the housing through the carbon dioxide absorbing machine and the manifold system.

### Claim 3 (depends on 1)

The portable carbon dioxide absorption machine of claim 1, wherein the inlet of the housing has an inlet width greater than an outlet width of the outlet of the housing.

### Claim 4 (depends on 1)

The portable carbon dioxide absorption machine of claim 1, wherein an exterior opening of the outlet comprises at least one of a screen coupled to an inner diameter of the exterior opening of the outlet, a mesh coupled to the inner diameter of the exterior opening of the outlet, or a plurality of holes defined by the housing.

### Claim 5 (depends on 1)

The portable carbon dioxide absorption machine of claim 1, wherein the carbon dioxide absorbing device comprises a carbon dioxide absorbing material that absorbs the carbon dioxide from the air entering the inlet.

### Claim 6 (depends on 1)

The portable carbon dioxide absorption machine of claim 1, wherein the carbon dioxide absorbing device is configured to be removed and replaced from the housing.

### Claim 7 (depends on 1)

The portable carbon dioxide absorption machine of claim 1, wherein the carbon dioxide absorbing device houses a carbon dioxide absorbent in a removable canister cartridge.

### Claim 8 (depends on 1)

The portable carbon dioxide absorption machine of claim 1, wherein the carbon dioxide absorbing device houses a carbon dioxide absorbent in a refillable canister.

### Claim 9 (depends on 1)

The portable carbon dioxide absorption machine of claim 1, wherein the manifold system is configured to include a plurality of baffles.

### Claim 10 (depends on 1)

The portable carbon dioxide absorption machine of claim 1, wherein the manifold system is configured to include cyclonic separation.

### Claim 11 (depends on 1)

The portable carbon dioxide absorption machine of claim 1, further comprising:
a sensor disposed within or proximal to at least one of the inlet, the outlet, the housing, the blower, the manifold system, or the carbon dioxide absorbing device, where the sensor monitors an environmental concentration of CO2 proximal to the sensor.

### Claim 12 (depends on 1)

The portable carbon dioxide absorption machine of claim 1, wherein the portable carbon dioxide absorption machine is operable to be operated remotely.

### Claim 13 (depends on 1)

The portable carbon dioxide absorption machine of claim 1, further comprising a vented covering engaged to an exterior opening of the outlet and the inlet.

### Claim 14

A method for automatically reducing a concentration of carbon dioxide (CO2) in an enclosed environment using a portable carbon dioxide absorption machine, the method comprising:
providing a portable carbon dioxide absorption machine in an enclosed environment, the portable carbon dioxide absorption machine comprising:
an housing defining an inlet and an outlet,
a blower in fluid communication with the outlet and with a manifold system, the blower being disposed within the housing, wherein the blower pulls air from the manifold system, and pushes air from the housing through the outlet,
the manifold system comprising a manifold housing defining an expansion chamber, the expansion chamber, disposed within the housing, wherein the expansion chamber filters and reduces a velocity of air pulled by the blower, and
a carbon dioxide absorbing device disposed within the housing, the carbon dioxide absorbing device in fluid communication with the inlet and the manifold system, wherein the carbon dioxide absorbing device absorbs carbon dioxide from the air entering the inlet;
continuously measuring an environmental concentration level of CO2 in the enclosed environment using a sensor in communication with a control system of the portable carbon dioxide absorption machine;
determining, at the control system if the environmental concentration level of CO2exceeds a predetermined threshold;
continuously or intermittently operating the blower of the portable carbon dioxide absorption machine to draw the air into the portable carbon dioxide absorption machine such that the concentration of CO2 emitted from the portable carbon dioxide absorption machine is less than the environmental concentration level of CO2; and
ceasing operation of the blower when the environmental concentration level of CO2 falls below the predetermined threshold.

### Claim 15 (depends on 14)

The method of claim 14, further comprising:
filtering the air entering the portable carbon dioxide absorption machine to capture and remove dust or other particulates from the enclosed environment.

### Claim 16 (depends on 14)

The method of claim 14, further comprising:
setting the predetermined threshold based upon a measurement of a volume of the enclosed environment and an anticipated increase in concentration levels of CO2 within the enclosed environment.

### Claim 17 (depends on 14)

The method of claim 14, wherein operation of the blower is ceased automatically.

### Claim 18

A method of manufacturing a portable carbon dioxide absorption machine comprising:
providing a housing including an inlet and an outlet;
disposing a blower within the housing such that the blower is in fluid communication with the outlet and with a manifold system, wherein the blower pulls air from the manifold system and pushes air from the housing through the outlet;
configuring the manifold system to comprise a manifold housing defining an expansion chamber, wherein the expansion chamber is disposed within the housing and filters the air and reduces a velocity of the air pulled in by the blower;
disposing a carbon dioxide absorbing device within the housing, the carbon dioxide absorbing device in fluid communication with the inlet and the manifold system, wherein the carbon dioxide absorbing device absorbs carbon dioxide from the air entering the inlet; and
disposing a power supply within the housing, wherein the power supply is in electrical communication with the blower.

### Claim 19 (depends on 18)

The method of claim 18, further comprising configuring an exterior opening of the outlet to comprise at least one of a screen coupled to an inner diameter of the exterior opening of the outlet, a mesh coupled to the inner diameter of the exterior opening of the outlet, or a plurality of holes defined by the housing.

### Claim 20 (depends on 18)

The method of claim 18, further comprising disposing within the carbon dioxide absorbing device a carbon dioxide absorbing material that absorbs the carbon dioxide from the air entering the inlet.