A full-face diving mask includes a mask and a breathing tube. The mask includes an outer frame, a lens housing and a fitting mask. The fitting mask includes a partition plate. The partition plate and the inner surface of the lens housing define an observation chamber on the top and a breathing chamber below. The partition plate includes at least one air intake port to allow inhaled air to be guided and circulated through at least one air intake passageway from the observation chamber toward the breathing chamber. The breathing chamber is further provided with an air compartment partition plate connected to the partition plate to define an air discharge compartment. The air compartment partition plate is provided with at least one air discharge port to allow exhaled air to be guided through at least one air discharge passageway from the air discharge compartment and discharged along the breathing tube.

An exhaust apparatus for connection to a personal protection respiratory device that defines a filtered air volume adjacent to the face of a wearer and comprises at least one exhalation, the apparatus comprising a blower in fluid connection with the at least one exhalation valve, the blower being responsive to the wearer's respiratory cycle to draw a substantial portion of the wearer's exhaled breath through the at least one exhalation valve wherein, in response to the wearer's respiratory cycle, the blower operates throughout the wearer's exhale breath, or a substantial period thereof, and does not operate throughout the wearer's inhale breath, or a substantial period thereof

An exhaust apparatus for connection to a personal protection respiratory device that defines a filtered air volume adjacent to the face of a wearer and comprises at least one exhalation, the apparatus comprising a blower in fluid connection with the at least one exhalation valve, the blower being responsive to the wearer's respiratory cycle to draw a substantial portion of the wearer's exhaled breath through the at least one exhalation valve wherein, in response to the wearer's respiratory cycle, the blower operates throughout the wearer's exhale breath, or a substantial period thereof, and does not operate throughout the wearer's inhale breath, or a substantial period thereof

A partition plate device of a respirator mask includes a partition plate having an upside surface and a downside surface each cooperating with a mask body and a user's face to define an upper chamber and a lower chamber, respectively, a mask connecting rims for connecting against an inner surface of the mask body a user connecting rim for contacting the user's face, and at least one valve hole extending through the upside and downside surfaces and communicating with the upper and lower chambers. A valve unit includes at least one valve flap covering the valve hole and being movable away from the same to permit air in the lower chamber to flow in a single direction to the upper chamber.

A partition plate device of a respirator mask includes a partition plate having an upside surface and a downside surface each cooperating with a mask body and a user's face to define an upper chamber and a lower chamber, respectively, a mask connecting rims for connecting against an inner surface of the mask body a user connecting rim for contacting the user's face, and at least one valve hole extending through the upside and downside surfaces and communicating with the upper and lower chambers. A valve unit includes at least one valve flap covering the valve hole and being movable away from the same to permit air in the lower chamber to flow in a single direction to the upper chamber.

A respirator mask wearable by a wearer for protecting the wearer against inhalation of noxious agents (e.g., chemical agents, biological agents, radiological agents, and/or other poisonous or otherwise harmful agents that can cause disease, injury or death), such as a CBRN mask, may be configured to enhance protection of the wearer (e.g., by providing ballistic protection in addition to protecting against noxious agent inhalation) while reducing a burden on the wearer, such as by reducing respiratory resistance, improving visibility, and/or facilitating use of the mask (e.g., connection or disconnection of a filter, conduit, or other air-providing device to or from a breathing interface of the mask).

A respirator mask wearable by a wearer for protecting the wearer against inhalation of noxious agents (e.g., chemical agents, biological agents, radiological agents, and/or other poisonous or otherwise harmful agents that can cause disease, injury or death), such as a CBRN mask, may be configured to enhance protection of the wearer (e.g., by providing ballistic protection in addition to protecting against noxious agent inhalation) while reducing a burden on the wearer, such as by reducing respiratory resistance, improving visibility, and/or facilitating use of the mask (e.g., connection or disconnection of a filter, conduit, or other air-providing device to or from a breathing interface of the mask).

The present invention relates to a portable personal air purifier in which there are mounted a purifier body configured to have a shape that can be carried by a user and to purify air by means of a filter, a ventilation body connected to the purifier body and configured to communicate air, and a respiration mechanism connected to the ventilation body, and configured to suck purified air; wherein the purifier body is configured such that a filter accommodating space is formed in a casing so that a filter is inserted thereinto, and the filter accommodating space has a structure in which the filter can be withdrawn in one direction; and wherein the respiration mechanism separates a ventilation line for air flowing from the purifier body and a ventilation line for air exhaled from the user.

A protective respirator, including an inhalation reactor chamber that treats and provides intake air to a user and an exhaust reactor chamber that treats exhaust air exhaled by the user. The respirator uses ultraviolet C radiation to deactivate potentially harmful particles without exposing the user to the radiation. In embodiments, the respirator includes a number of features that increase efficiency and prolong battery life. For instance, the protective respirator may use approximately half the power by alternating between the inhalation and exhalation reactor chambers. Additionally, the respirator may adjust the intensity of the UVC radiation based on the intensity of the user's respiration. Additionally, the reactor chamber cavities may be lined with a reflective material that exponentially increases the irradiance inside each chamber cavity. Additionally, each reactor chamber cavity may include fluid-permeable photon barriers that reflect UVC photons back into the reactor chamber cavity while allowing airflow to pass.

A protective respirator, including an inhalation reactor chamber that treats and provides intake air to a user and an exhaust reactor chamber that treats exhaust air exhaled by the user. The respirator uses ultraviolet C radiation to deactivate potentially harmful particles without exposing the user to the radiation. In embodiments, the respirator includes a number of features that increase efficiency and prolong battery life. For instance, the protective respirator may use approximately half the power by alternating between the inhalation and exhalation reactor chambers. Additionally, the respirator may adjust the intensity of the UVC radiation based on the intensity of the user's respiration. Additionally, the reactor chamber cavities may be lined with a reflective material that exponentially increases the irradiance inside each chamber cavity. Additionally, each reactor chamber cavity may include fluid-permeable photon barriers that reflect UVC photons back into the reactor chamber cavity while allowing airflow to pass.