This application relates to a modular electrostatic precipitator. In one aspect, the modular electrostatic precipitator includes a housing providing a flow path through which air is moved and a charging module configured to emit electromagnetic waves to the air. The precipitator may also include a first attaching/detaching unit configured to attach and detach the charging module to and from the housing and a particle collecting module configured to collect particles in the air by applying an electrostatic force to the air. The precipitator may further include a second attaching and detaching unit configured to attach and detach the particle collecting module to and from the housing.

A DC power source operating portable human body carrying potential feedback electronic human breath filtration device is an electronic nose mask with directional ionic air filtration control and is the most ideal alternative to conventional filter paper type nose mask. It utilizes potential feedback electronic ionization technique and electrostatic field to remove air borne matters from human inhalation and exhalation breath. It has UV germicidal function and a micro electric fan to provide positive air pressure. It utilizes electromechanical potential feedback technology to improve the rate of ionization at lower voltage level to minimize the generation of Ozone; a moisture collection feature to absorb the condensation from the user's breath. It is light weight and connected to a pocket size control system via a connection cable and has an ionization flux sensing device for user to verify the present of the ionization.

An electrostatic precipitator including an outer electrode of a tubular shape whose internal space is passed through by gas to be processed, and an inner electrode arranged in the internal space so as to be coaxial with the outer electrode, is provided. A ratio Ra/Rb being a ratio of an outer radius Ra of the inner electrode to an inner radius Rb of the outer electrode is smaller than 1/e (where e is a base of a natural logarithm). The ratio Ra/Rb may be smaller than ½e. The outer radius Ra of the inner electrode may be from 1 mm to 10 mm, and the inner radius Rb of the outer electrode may be from 10 mm to 100 mm.

A gas cleaning system includes an inlet receiving a gas, an outlet spaced apart from the inlet, a gas channel defined between the inlet and the outlet to direct the gas from the inlet to the outlet, a photoionizer disposed to emit radiation towards a portion of the gas channel, and a first electrode module. The first electrode module includes a first discharge electrode assembly that generates a corona discharge within the gas channel and a first collection electrode assembly that collects ionized particles from the gas in the gas channel.

A personal air treatment device is used to treat air with UV irradiation and with scents. The scents may be used as an attractant or masking for hunting. Multiple devices may be controlled by a smartphone application to strategically alter scent dispersion according to local wind patterns, user location, and relative device location. Similar air treatment devices may be integrated with a particulate mask or used to otherwise treat the air around a user.

The present invention includes a device, a system, and a method for enhancing a particle separation efficiency, including a particle charging device adapted to impart predominately unipolar charging on a plurality of particles in a fluid stream, e.g. a gas stream; wherein the particle charging device is positioned upstream from and adapted to provide the plurality of particles charged by the particle charging device to a particle deflection device capable of separating the particles charged by the particle charging device from a core fluid flow that is substantially free of dust particles.

An air purifier having an electret module for capturing airborne particles, the electret module includes an electret element which generates a static field for capturing airborne particles. The electret module is positioned incorporated into the air purifier such that the static field helps prevent the inhalation of the airborne particles.

An electric discharge plasma device for treating waste fluid comprises: (a) at least one optical arrangement further comprising a laser source generating a laser radiation beam propagatable into a flow of the waste fluid and a laser beam distributor which spatiotemporally distributes the laser radiation beam within the flow such that a cloud of ionized gases containing electrically charged particles is created; and (b) an energizing arrangement transferring energy to the ionized gases containing electrically charged particles such that at least one of the following products an ionized gas, an oxidized contaminant, an ozone gas is generated.

Particle measurement apparatus comprises an inlet for receiving a gas sample for analysis, a photoionisation chamber, at least one light source arranged to illuminate an interior of the photoionisation chamber, first and second electrodes coupled to a power source and configured to provide a DC potential difference across at least a portion of the photoionisation chamber, and an outlet, together defining a gas flow path from the inlet, through the photoionisation chamber, and towards the outlet.

A gas cleaning system includes an inlet receiving a gas, an outlet spaced apart from the inlet, a gas channel defined between the inlet and the outlet to direct the gas from the inlet to the outlet, a photoionizer disposed to emit radiation towards a portion of the gas channel, and a first electrode module. The first electrode module includes a first discharge electrode assembly that generates a corona discharge within the gas channel and a first collection electrode assembly that collects ionized particles from the gas in the gas channel.