A mask apparatus includes a mask body including a body front surface and a body rear surface configured to cover at least a portion of a user's face, a fan module disposed at the body front surface, a mask body cover that is coupled to the mask body and defines an inner space accommodating the fan module, a seal coupled to the body rear surface and configured to define a breathing space between the mask body and the user's face. The mask body defines an opening that passes through the mask body and that connects the inner space of the mask body cover to the breathing space. A pressure sensor is disposed in the opening and configured to sense air pressure in the breathing space.

A mask apparatus includes a mask body including a body front surface and a body rear surface configured to cover at least a portion of a user's face, a fan module disposed at the body front surface, a mask body cover that is coupled to the mask body and defines an inner space accommodating the fan module, a seal coupled to the body rear surface and configured to define a breathing space between the mask body and the user's face. The mask body defines an opening that passes through the mask body and that connects the inner space of the mask body cover to the breathing space. A pressure sensor is disposed in the opening and configured to sense air pressure in the breathing space.

A mask apparatus includes a mask body, a seal disposed at a rear surface of the mask body, a fan module disposed at a front surface of the mask body, and a mask body cover that covers the fan module and is coupled to the front surface of the mask body. The mask body includes an air duct configured to guide external air from the fan module to a breathing space inside the seal, and an air exhaust hole configured to discharge air exhaled into the breathing space to an outside of the mask body. An area of a duct outlet of the air duct is greater than an area of a duct inlet of the air duct.

A mask apparatus includes a mask body, a seal disposed at a rear surface of the mask body, a fan module disposed at a front surface of the mask body, and a mask body cover that covers the fan module and is coupled to the front surface of the mask body. The mask body includes an air duct configured to guide external air from the fan module to a breathing space inside the seal, and an air exhaust hole configured to discharge air exhaled into the breathing space to an outside of the mask body. An area of a duct outlet of the air duct is greater than an area of a duct inlet of the air duct.

The present invention is a compact and portable personal ultraviolet air irradiation system having an ultraviolet air irradiation unit, a breathing tube, and a face mask. Unfiltered air passes through the ultraviolet air irradiation unit and is purified to ensure biological material has been neutralized by utilizing UV LEDs in the germicidal wavelengths of 100-280 nm. The ultraviolet air irradiation unit may further purify air of air particulates, gases, vapors, and biological material by utilizing a HEPA filter. The ultraviolet air irradiation unit may provide variable pressure to the mask to meet the breathing demands of the user. Flow through the ultraviolet irradiation unit may be reversible to irradiate the exhalations of a user who may be infected with a virus or other disease spread through exhalations.

The present invention is a compact and portable personal ultraviolet air irradiation system having an ultraviolet air irradiation unit, a breathing tube, and a face mask. Unfiltered air passes through the ultraviolet air irradiation unit and is purified to ensure biological material has been neutralized by utilizing UV LEDs in the germicidal wavelengths of 100-280 nm. The ultraviolet air irradiation unit may further purify air of air particulates, gases, vapors, and biological material by utilizing a HEPA filter. The ultraviolet air irradiation unit may provide variable pressure to the mask to meet the breathing demands of the user. Flow through the ultraviolet irradiation unit may be reversible to irradiate the exhalations of a user who may be infected with a virus or other disease spread through exhalations.

A mask seal test method, device, and system of using the same are described herein. One method for testing a mask seal can include blocking a respirator cartridge to create pressure within a mask, wherein the mask includes a pressure sensor, measuring pressure values within the mask using the pressure sensor, and notifying a user in response to an increased pressure decay value among the pressure values received by the mask identification reader.

Breathing apparatus (100) for aircraft including:

a breathing mask (10) comprising an oronasal face cover (14) and a support (17), the oronasal face cover (14) having a cavity (13, 15) and the support (17) supporting a transparent lens (18) and comprising an upper edge portion (19a),

an inflatable harness (20) configured for extending around the user's head opposite the shell, the harness (20) comprising at least one rear portion,

a guiding link (110) having an upper end (110a) and a lower end (110b), the upper end (110a) being linked to the upper edge portion (19a), the lower end (110b) being linked to the rear portion of the harness (20), and

a plate (120) linked to the lower end (110b) of the guiding link (110) and having an abutment face configured for contacting the oronasal face cover (14), facing the cavity (13).

An air treatment system includes a cyclone filter and an electrostatic filtration system. The cyclone filter may include a cyclone chamber, a cyclone chamber inlet configured to receive air including suspended particulates, and a cyclone chamber outlet configured to output treated air toward a respiratory interface, e.g., a mask or face shield. The cyclone filter produces a rotational airflow that removes at least some particulates from the air in the cyclone filter. The electrostatic filtration system is configured to charge the particulates in the cyclone chamber with a first polarity to produce an electrostatic attraction of the particulates to a particulate removal system charged with an opposite second polarity, to remove additional particulates from the cyclone filter. The air treatment system may also include an ultraviolet purification system to deliver ultraviolet radiation (e.g., UVC radiation) to kill, destroy or otherwise affect organic particulates in the air being treated.

An air treatment system includes a cyclone filter and an electrostatic filtration system. The cyclone filter may include a cyclone chamber, a cyclone chamber inlet configured to receive air including suspended particulates, and a cyclone chamber outlet configured to output treated air toward a respiratory interface, e.g., a mask or face shield. The cyclone filter produces a rotational airflow that removes at least some particulates from the air in the cyclone filter. The electrostatic filtration system is configured to charge the particulates in the cyclone chamber with a first polarity to produce an electrostatic attraction of the particulates to a particulate removal system charged with an opposite second polarity, to remove additional particulates from the cyclone filter. The air treatment system may also include an ultraviolet purification system to deliver ultraviolet radiation (e.g., UVC radiation) to kill, destroy or otherwise affect organic particulates in the air being treated.