Daikin Industries, Ltd.

Shunji Haruna

Toshio Tanaka

Kanji Motegi

Tetsuya Yamashita

Ryuji Akiyama

Kei Suzumura

Tatsumi Enokida

Tsunahiro Odo

Kenkichi Kagawa

Ryuuji Akiyama

Kiyoshi Kuroi

Shin Koizumi

Yuta Sasai

A ventilation system includes an inside air passage having inflow and outflow ends communicating with an indoor space to be ventilated, at least one permeable film unit including a permeable film, and an air supply passage having an inflow end communicating with an outdoor space and an outflow end connected to a downstream side of the permeable film in the inside air passage. The permeable film allows a target gas to pass and allows the target gas that has passed through the permeable film to be discharged into outdoor air. The target gas contains at least one of carbon dioxide and a volatile organic compound in indoor air that flows in the inside air passage. Alternatively or in addition, the ventilation system can include an outside air passage and a discharge passage in place of or in addition to the inside air passage and the air supply passage, respectively.

Ventilation system

A discharge unit includes a discharge electrode, a counter electrode opposed to the discharge electrode, and an insulation member having a surface. The surface is continuous from the discharge electrode to the counter electrode. A wall portion is provided on one side with respect to a discharge region formed by the discharge electrode. The wall portion is configured to suppress a contaminant from adhering to the surface of the insulation member.

Discharge unit

An air purification device includes a controller configured to perform a normal discharge operation in which a discharger generates streamer discharge to purify air, and an emergency discharge operation in which, in order to remove substances, which are components contained in air, adhering to electrodes of the discharger due to the normal discharge operation, a higher voltage than that in the normal discharge operation is applied to the electrodes to cause the discharger to generate spark discharge. The controller adjusts an application voltage such that a current value between the electrodes is maintained constant, and the upper limit V of the application voltage is set at a value greater than an inter-electrode distance of d&#xd7;1.2 (V&#x2267;d&#xd7;1.2).

Air purification device

Each protrusion () of a first electrode () is formed to have a long plate-like shape extending across a plurality of grid holes () of the first electrode (). Each grid hole () of a second electrode () is formed to have an elongate shape extending to conform to each corresponding one of the protrusions () of the first electrode (). Protrusions () of the second electrode () are arranged in the longitudinal direction at end portions () on the long sides of the respective grid holes () of the second electrode (), so as to conform to the grid holes () of the first electrode ().

Dust collector

An air handling device () includes an air flow path () in which a charge section () for charging dust in an air to be handled, and a precipitator () for collecting the charged dust are placed. The charge section () includes a discharge electrode () and a counter electrode () to perform diffusion charging. A diffusion space () is provided at a location between the charge section () and the precipitator ().

Air handling device

The present invention relates to a charging device having a charge section () for charging a floating particle in an air to be handled, and an air handling device (an air cleaning device) having the charging device. The charge section () is constituted by a first charge section () adopting an impact charging technique and a second charge section () adopting a diffusion charging technique. With this structure, charging and collection of dust can be accomplished only in the casing of the device, and therefore, an increase in size of the device can be avoided.

Charging device, air handling device, method for charging, and method for handling air

A dust collector includes a charging part () for charging dust with electricity and a dust collecting part (). Each of a dust collecting electrode () and a high-voltage electrode () that constitute the dust collecting part () includes: a base () with a rectangular grid structure having a large number of vent holes () formed therein; and projections () extending into the vent holes () of the opposed electrode (). The dust collector collects dust by generating an electric field between the dust collecting electrode () and the high-voltage electrode ().

Growing community of inventors

Osaka, Japan

Shunji Haruna