An electrostatic-precipitator air cleaner includes a base, a shell, a fan, a barrel, a high-voltage discharge module, a distribution module and a precipitation module. The shell is connected to the base. The fan is connected to an upper portion of the shell. The barrel is connected to the shell above the base. The high-voltage discharge module is connected to the base and inserted in the barrel. The distribution module is connected to the high-voltage discharge module. The precipitation module is inserted in the barrel.

An air filtration system having a housing. The housing has an inlet, a frame unit, a filter unit, and an outlet. A fan is positioned in the air filtration system or not, and pulls or pushes air into the inlet, and through the outlet, and has the air pass through the filter unit. The filter unit has a first and a second expanded metal metallic plate. The first plate has a first plurality of apertures, and the second plate a second plurality of apertures. Each plate has a coated layer of a dielectric conducting and antimicrobial agent polymer material. The frame unit secures the first expanded metal metallic plate at a first position in the housing, the second expanded metal metallic plate at a second position in the housing, and ensures, when the first and second expanded metal metallic plates are securely positioned in the housing, that the first expanded metal metallic plate is adjacent to the second expanded metal metallic plate and wherein a portion of the first expanded metal metallic plate contacts or is within 20 millimeters from the second expanded metal metallic plate and each aperture of the second plurality of apertures misaligns with an aperture of the first plurality of apertures.

An imaging system includes a fixing device, a collection device, and a controller. The collection device collects ultrafine particles (UFP) emitted by the fixing device. The collection device includes an ionizer. The controller turn on the ionizer.

A plume cleaning system for a toilet is integrated with a toilet. In one example, a plume cleaner assembly adjacent to a toilet seat is independently removable with respect to the toilet seat. The plume cleaner assembly may include a plume cleaner, apertures, and a fan positioned to draw plume air through the plurality of apertures for treatment by the plume cleaner and expel the treated plume air out of the plume cleaner assembly in a direction at an angle to the apertures. In another example, a plume cleaner assembly with the toilet seat may include at least a fan, an electrostatic collector, and a mist generator. In another example, a plume cleaner assembly is integrated in a tank of the toilet to generate a sanitization fluid that is channeled into the toilet bowl through an overflow tube and/or rim channels.

An air filtration system has a housing. The housing has an inlet, a filter unit, an outlet, and a fan that pulls air into the inlet, pushes the air through the outlet, and has the air pass through the filter unit. The filter unit has a first metallic plate, a second metallic plate and a frame unit. The first and second metallic plate (a) is coated with a dielectric conducting and antimicrobial agent polymer layer, and (b) respectively has a first and second plurality of apertures. The second apertures do not align with the first apertures when the first and second plates are properly positioned in the housing. The frame unit ensures plates are properly positioned in the housing.

An ionization chamber is provided with a series of parallel plates spaced from each other and with holes passing therethrough. Alternating plates have either a highest high voltage or a lower high voltage provided thereto, such as through a DC transformer coupled to an electric power source. Holes in alternating plates are preferably offset so that airflow through the plates occurs along curving pathways. The plates are sufficiently highly charged to cause carbon dioxide to be ionized and for carbon ions to become trapped within wells defining lowest regions of electric charge within an electric field inside the ionization chamber. Fans control airflow through the ionization chamber. A dehumidifier is provided upstream of the ionization chamber to reduce moisture content within the incoming gas. After the carbon has collected within the wells, harvesting of the carbon ions as carbon nano particle powder can occur within a carbon cache.

A refrigerant regenerating apparatus is disclosed. A refrigerant regenerating apparatus of the present disclosure includes: a regenerator into which a refrigerant flows and from which the refrigerant is discharged, the regenerator configured to separate and discharge oil contained in a refrigerant flowing in the regenerator; and a recoverer into which the refrigerant discharged from the regenerator flows, the recoverer including a compressor configured to compress a refrigerant flowing in the recoverer and a heat exchanger configured to condense a refrigerant discharged from the compressor, in which the regenerator includes: a charger configured to charge oil contained in the refrigerant flowing in the regenerator with positive ions or negative ions using corona discharge; and a collector configured to electrically collect the oil charged through the charger.

Examples are disclosed that relate to cooking systems with internal ventilation systems. One example provides a cooking system comprising a ventilation duct comprising an inlet aperture configured to receive cooking exhaust, a fan disposed within the ventilation duct, the fan being configured to pull the cooking exhaust through the inlet aperture and the ventilation duct, and a particulate removal system positioned within the ventilation duct between the inlet aperture and the fan. In an example, the particulate removal system includes a cyclonic filtration system.

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.

A portable air purifier device includes a fan, air purification system, air quality sensor module, air crossflow limiter and a head mount. The air purifier is mounted in the forehead/head area without blocking the user's nose, mouth or face area, making it easy to breathe. The air purification system consists of one or more Electrostatic Precipitators connected together, in series to achieve higher level of air purification efficiency or in parallel to achieve higher output air flow rate. The crossflow limiter blocks dirty air from the outside from displacing the cleansed air supplied by the device. The air quality sensor module automatically throttles the air purification up/down based on the air pollution level surrounding the user. The head mount is used to easily mount the air purifier device either directly onto the user's head or on top of any head-wear such as a helmet or a hat.