Wearable air purifier

A head wearable air purifier comprising:

• a first speaker assembly arranged to be worn over a first ear of a user and a second speaker assembly arranged to be worn over a second ear of the user, wherein the first speaker assembly comprises a speaker housing, the speaker housing encompassing a speaker, a filter assembly, a motor-driven impeller for creating an airflow through the filter assembly, and an air outlet downstream from the filter assembly for emitting a filtered airflow from the first speaker assembly;
• a nozzle arranged to receive the filtered airflow from the first speaker assembly, the nozzle comprising an air outlet arranged to emit the received filtered airflow from the head wearable air purifier;
• an outlet duct configured to connect the nozzle to the air outlet of the first speaker assembly, wherein the outlet duct is configured to revolve relative to the speaker housing of the first speaker assembly between a first position and a second position, wherein the outlet duct is aligned with and connected to the air outlet of the first speaker assembly when in the first position, and wherein the outlet duct is connected to the first speaker assembly and is offset and disconnected from the air outlet of the first speaker assembly when in the second position;
• and
• a control circuit arranged to control a rotational speed of the motor-driven impeller of the first speaker assembly such that a maximum rotational speed of the motor-driven impeller is from 9,000 to 18,000 RPM.

A head wearable air purifier comprising:

• a first speaker assembly arranged to be worn over a first ear of a user and comprising a first speaker housing, the first speaker housing encompassing a first speaker, a first filter assembly, a first motor-driven impeller for creating an airflow through the first filter assembly, and a first air outlet downstream from the first filter assembly for emitting a first filtered airflow from the first speaker assembly;
• a second speaker assembly arranged to be worn over a second ear of the user and comprising a second speaker housing, the second speaker housing encompassing a second speaker, a second filter assembly, a second motor-driven impeller for creating an airflow through the second filter assembly, and a second air outlet downstream from the second filter assembly for emitting a second filtered airflow from the second speaker assembly;
• a nozzle extending between the first speaker assembly and the second speaker assembly, the nozzle arranged to receive the first filtered airflow and the second filtered airflow, wherein the nozzle comprises an air outlet arranged to emit both of the received filtered airflows towards a face of the user;
• and
• an outlet duct configured to connect the nozzle to the air outlet of the first speaker assembly, wherein the outlet duct is configured to revolve relative to the first speaker housing of the first speaker assembly between a first position and a second position, wherein the outlet duct is aligned with and connected to the air outlet of the first speaker assembly when in the first position, and wherein the outlet duct is connected to the first speaker assembly and is offset and disconnected from the air outlet of the first speaker assembly when in the second position, and
• wherein the first speaker assembly and the second speaker assembly are symmetrical with respect to an axis that bisects the nozzle into two symmetrical portions.