Maskless respiratory, skin, and eye protection device for aerosols and vapors including chemical, biological, radiological, nuclear, and explosive (cbrne) contaminants

A personal protection device comprising:

• a frame for accommodating a user of the personal protection device;
• an air processing assembly comprising:
• an inlet for receiving ambient air;
• an outlet;
• at least one filter, wherein when the at least one filter is stacked together with at least one fan and positioned between the inlet and the outlet in a stacking direction, wherein the at least one fan is configured to generate an airflow in an inhalation zone, wherein the inhalation zone is about a 10-inch radius around the nose and mouth of the user, wherein the air processing assembly is disposed upstream from the inhalation zone with respect to a direction of the airflow configured to be generated by the at least one fan in the inhalation zone, wherein the air processing assembly is in-line with the inhalation zone,
• wherein the at least one filter reduces contaminated air in the inhalation zone and comprises an aerosolized particle contamination filter configured to achieve an aerosolized particle contamination filtration efficiency of 75% or greater for particles having a size of about 1.0 μm,
• wherein the at least one fan is configured to generate the airflow having an airflow speed of about 50 feet per minute (fpm) to about 500 fpm, as measured in an inhalation zone at a nose level,
• wherein the airflow is configured to be directed towards the face of the user in the inhalation zone by about 10 degrees or more with respect to a direction parallel to the height of the user when standing;
• wherein substantially all air released from the outlet in the inhalation zone has been filtered by the at least one filter, and
• wherein the air processing assembly is coupled to the frame and processes substantially all ambient air in a direction of the airflow before entering the inhalation zone.

A personal protection device comprising:

• a frame for accommodating a user of the personal protection device;
• an air processing assembly comprising:
• an inlet for receiving ambient air;
• an outlet;
• at least one filter, wherein when the at least one filter is stacked together with at least one fan and positioned between the inlet and the outlet in a stacking direction, the at least one fan is configured to generate an airflow in an inhalation zone, wherein the inhalation zone is about a 10-inch radius around the nose and mouth of the user, wherein the air processing assembly is disposed upstream from the inhalation zone with respect to a direction of the airflow configured to be generated by the at least one fan in the inhalation zone, wherein the air processing assembly is in-line with the inhalation zone;
• wherein the at least one filter reduces contaminated air in the inhalation zone and comprises an aerosolized particle contamination filter comprising pleated media selected from the group consisting of a high-efficiency particulate air (HEPA) filter, a minimum efficiency reporting value (MERV) filter with a rating of 13 or above, and combinations of two or more of the foregoing;
• wherein the at least one fan is configured to generate the airflow having an airflow speed of about 50 feet per minute (fpm) to about 500 fpm, as measured in an inhalation zone at a nose level;
• wherein substantially all air released from the outlet in the inhalation zone has been filtered by the at least one filter;
• and
• wherein the air processing assembly is coupled to the frame and processes substantially all ambient air in a direction of airflow by the at least one fan before entering the inhalation zone.

A personal protection device comprising:

• a frame for accommodating a user of the personal protection device;
• an air processing assembly comprising:
• an inlet for receiving ambient air;
• an outlet;
• at least one filter, wherein when the at least one filter is stacked together with at least one fan and positioned between the inlet and the outlet in a stacking direction, wherein the at least one fan is configured to generate an airflow in an inhalation zone, wherein the inhalation zone is about a 10-inch radius around the nose and mouth of the user, wherein the air processing assembly is disposed upstream from the inhalation zone with respect to a direction of the airflow configured to be generated by the at least one fan in the inhalation zone, wherein the air processing assembly is in-line with the inhalation zone;
• wherein the at least one filter comprises a vapor contamination filter comprising activated carbon configured to achieve a vapor contamination filtration efficiency of 95% or greater one or more of Novichok nerve agent (A232), thickened venomous nerve agent (TVX), sulfur mustard agent (HD), thickened sulfur mustard agent (THD), soman nerve agent (GD), and sarin serve agent (GB), as measured in the inhalation zone at a nose level, wherein the aerosolized particle contamination filtration efficiency is calculated using an input from outside the inhalation zone and an output from within the inhalation zone;
• wherein the at least one fan is configured to generate the airflow having an airflow speed of about 50 feet per minute (fpm) to about 500 fpm, as measured in an inhalation zone at the nose level;
• wherein substantially all air released from the outlet in the inhalation zone has been filtered by the at least one filter;
• wherein the air processing assembly is coupled to the frame and processes substantially all ambient air in the direction of the airflow before entering the inhalation zone.