An electro-ionic device configured for being worn on the face of a person is disclosed. The electro-ionic device includes at least two electrical conductors spaced apart from each other defining at least a portion of a respiratory pathway therebetween and a circuit configured to apply a first voltage between the two conductors during inspiration and a second voltage greater than the first voltage during expiration.

A bipolar ionizer comprising an electronic circuit, microprocessor, and step-up transformer providing high-voltage signals to carbon-fiber electrodes producing bipolar ion concentrations greater than +/−200 million ions per cubic centimeter. The bipolar ionizer monitors, reduces, and converts high-voltage signals to feedback signals used by the microprocessor to vary a frequency and a duty cycle of a digital signal to control an excitation signal for a step-up transformer output voltage to consistently maintain an unbalanced high-voltage output ratio less than 80 percent, balanced bipolar ion concentration ratio greater than 80 percent, and zero ozone concentration over a range of electrical signal inputs. The microprocessor calculates and reports bipolar ionizer concentrations based on feedback signals. The microprocessor monitors concentrations of Volatile Organic Compounds (VOCs) in an airflow serving the bipolar ionizer and adjusts the positive/negative DC high-voltage signals and bipolar ion concentration when VOC concentrations are above a threshold.

The field of this invention is technology that supports and enhances natural face-to-face communication. Throughout the recent Pandemic, people have been adversely affected by the loss of real face-to-face human contact. The invention provides one or more safe ‘meeting spaces’ through which persons can talk to each other normally, without the risk of airborne pathogens passing between them. The meeting space of the invention offers no physical barrier such as glass, which would reduce the quality of communication and diminish the user experience. Persons may see and hear each other through the meeting space but pathogens cannot substantially pass through it. Various ways are provided that substantially destroy/inactivate/remove pathogens from the meeting space(s). Some embodiments are sustainable, carbon neutral and solar powered. Others are highly energy efficient. Further refinements create a pleasant environment for conversation and enhance the user experience.

The present inventive concept relates to an air treatment device adapted to treat air in a confined space. The air treatment device comprises a device body having a central axis, the device body comprising a supporting structure being substantially transverse to the central axis and a side section being substantially parallel to the central axis. The air treatment device further comprises an air treatment section arranged in the device, an ionizing arrangement, a fan arrangement, and a filter extending in a first direction being parallel to the central axis, wherein the filter comprises an upper end and a lower end in the first direction, wherein the ionizing arrangement and the fan arrangement are arranged between the upper and lower end.

The present inventive concept relates to an air treatment device adapted to treat air in a confined space. The air treatment device comprises a device body having a central axis, the device body comprising a supporting structure being substantially transverse to the central axis and a side section being substantially parallel to the central axis. The air treatment device further comprises an air treatment section arranged in the device, an ionizing arrangement, a fan arrangement, and a filter extending in a first direction being parallel to the central axis, wherein the filter comprises an upper end and a lower end in the first direction, wherein the ionizing arrangement and the fan arrangement are arranged between the upper and lower end.

Embodiments of the present disclosure include methods and systems of circulating air in an enclosed environment. In such embodiments, the system may comprise an air handling unit (AHU), the AHU including an indoor air inlet to receive an indoor airflow from the enclosed environment and an indoor air outlet to expel the indoor airflow, a conditioning element arranged between the inlet and the outlet configured to at least heat or cool the indoor airflow as it flows thereover, one or more fan units arranged between the inlet and the outlet configured to provide velocity to the indoor airflow, and an air treatment assembly (ATA) arranged within or proximate the AHU, the ATA including an air inlet configured to receive a portion of the indoor airflow received by the AHU indoor air inlet.

Embodiments of the present disclosure include methods and systems of circulating air in an enclosed environment. In such embodiments, the system may comprise an air handling unit (AHU), the AHU including an indoor air inlet to receive an indoor airflow from the enclosed environment and an indoor air outlet to expel the indoor airflow, a conditioning element arranged between the inlet and the outlet configured to at least heat or cool the indoor airflow as it flows thereover, one or more fan units arranged between the inlet and the outlet configured to provide velocity to the indoor airflow, and an air treatment assembly (ATA) arranged within or proximate the AHU, the ATA including an air inlet configured to receive a portion of the indoor airflow received by the AHU indoor air inlet.

An air purification device (100) comprising a housing (102) defining an air inlet (110), an air outlet (112), and an airflow pathway (114) extending from the air inlet (110) to the air outlet (112); a liquid reservoir (130) disposed across the airflow pathway (114) between the air inlet (110) and the air outlet (112); an ultraviolet (UV) light source (210) disposed in the housing (102), wherein the UV light source (210) is positioned to emit UV light into the airflow pathway (114); and an electrostatic precipitator (310) disposed across the airflow pathway (114).

An air purifier comprising a removable particulate or gas filter, an air flow generator, a means for controlling said air flow generator, a first air flow setting with an air filtration air flow speed and a second air flow setting which correlates with sterilisation of an internal surface of the air purifier and/or removable particulate or gas filter. A method for sterilising an internal surface of an air purifier according to any preceding claim by generating an air flow correlating with said second air flow setting. A method for sterilising an internal surface of an air purifier according to any preceding claim by generating an air flow correlating with said second air flow setting. A method for sterilising a removable filter in an air purifier according to any preceding claim by generating an air flow correlating with said second air flow setting. A method for preventing microbial growth on an internal surface of or a removable filter rom an air purifier by activating the air flow generator.

An air purifier comprising a removable particulate or gas filter, an air flow generator, a means for controlling said air flow generator, a first air flow setting with an air filtration air flow speed and a second air flow setting which correlates with sterilisation of an internal surface of the air purifier and/or removable particulate or gas filter. A method for sterilising an internal surface of an air purifier according to any preceding claim by generating an air flow correlating with said second air flow setting. A method for sterilising an internal surface of an air purifier according to any preceding claim by generating an air flow correlating with said second air flow setting. A method for sterilising a removable filter in an air purifier according to any preceding claim by generating an air flow correlating with said second air flow setting. A method for preventing microbial growth on an internal surface of or a removable filter rom an air purifier by activating the air flow generator.