A face mask includes a space formed therein by a peripheral wall extending from the periphery of the space. At least one first path and at least one second path are respectively formed in the space so that outside air enters into the space via the at least one first pat, and air in the space is released from the space via the at least one second path. The face mask covers a large area of the wearer's face to reduce foreign objects from entering into the wear's body so as to reduce the chance of being infected.

A face mask includes a space formed therein by a peripheral wall extending from the periphery of the space. At least one first path and at least one second path are respectively formed in the space so that outside air enters into the space via the at least one first pat, and air in the space is released from the space via the at least one second path. The face mask covers a large area of the wearer's face to reduce foreign objects from entering into the wear's body so as to reduce the chance of being infected.

A bayonet connector (112, 128) suitable for connecting a filter cartridge (72) or an air supply tube to a respirator (10, 14). The bayonet connector (112) has a tubular male part (112) and a female part. The male part has a tube (114) with two or more lugs (130, 132) formed on it, which engage with engaging ribs (136, 138) located on an interior sidewall of the female part (128), or vice versa. The lugs (130, 132) and their corresponding engaging ribs (136, 138) are located at different axial positions.

A bayonet connector (112, 128) suitable for connecting a filter cartridge (72) or an air supply tube to a respirator (10, 14). The bayonet connector (112) has a tubular male part (112) and a female part. The male part has a tube (114) with two or more lugs (130, 132) formed on it, which engage with engaging ribs (136, 138) located on an interior sidewall of the female part (128), or vice versa. The lugs (130, 132) and their corresponding engaging ribs (136, 138) are located at different axial positions.

A blower device for a respiratory protection system comprises a fan for generating an airflow, further comprises at least one filter element which is configured to be flown through by the airflow, comprises a housing unit accommodating the fan and the at least one filter element and comprises an air conveying channel, which accommodates the filter element and is configured for guiding an airflow between the filter element and the fan, wherein the air conveying channel is configured for a deflection of an airflow between the fan and the filter element,

wherein the air conveying channel is embodied separately from the housing unit and the at least one filter element is fixedly integrated in the air conveying channel.

A blower device for a respiratory protection system comprises a fan for generating an airflow, further comprises at least one filter element which is configured to be flown through by the airflow, comprises a housing unit accommodating the fan and the at least one filter element and comprises an air conveying channel, which accommodates the filter element and is configured for guiding an airflow between the filter element and the fan, wherein the air conveying channel is configured for a deflection of an airflow between the fan and the filter element,

wherein the air conveying channel is embodied separately from the housing unit and the at least one filter element is fixedly integrated in the air conveying channel.

The present invention relates to a method for preparing size-modulated UiO-66, which is achieved by modulating the concentrations of reactants, and a catalyst with improved activity of hydrolyzing chemical warfare agents prepared by the method.

The present invention relates to a method for preparing size-modulated UiO-66, which is achieved by modulating the concentrations of reactants, and a catalyst with improved activity of hydrolyzing chemical warfare agents prepared by the method.

An air purifying mask having a face mask along with components some of which are arranged inside a casing. The casing may contain an air filtering system, along with other associated components for the mask including blower, appropriate pressure, flow control and filtration settings, and heating control. A flexible attachable/detachable connecting coaxial duct for inhale and exhale, may connect the mask and the air filtration system. The system may have a heating element for self-cleaning and temperature control. The heating element may also help for disinfection of air path within the system and air mask.

An air purifying mask having a face mask along with components some of which are arranged inside a casing. The casing may contain an air filtering system, along with other associated components for the mask including blower, appropriate pressure, flow control and filtration settings, and heating control. A flexible attachable/detachable connecting coaxial duct for inhale and exhale, may connect the mask and the air filtration system. The system may have a heating element for self-cleaning and temperature control. The heating element may also help for disinfection of air path within the system and air mask.