Abstract: A personal tabletop-type air cleaner is provided which is user-friendly and can improve smoke sucking efficiency in a simple configuration. The disclosed personal tabletop-type air cleaner has a front opening portion to suck air containing smoke of a cigarette, a blower to forcedly feed air having been sucked into the front opening portions in a centrifugal manner, a pair of right and left peripheral opening portions each being placed in a fringe portion on the right and the left at a front of the air cleaner and forming an air curtain by emitting air fed forcedly from the blower ahead of the front of the air cleaner, a dust collecting filter being placed between the front opening portion and the blower to remove cigarette odor, and a deodorizing filter being placed between the blower and each peripheral opening portion making up the pair of right and left peripheral opening portions to remove cigarette odor.

Abstract: To provide a mist removing apparatus capable of improving mist-removing efficiency and to contribute to size reduction, weight reduction, and cost reduction in spite of a simple configuration. Air drawn in from an inlet and including oil mist is centrifugally accelerated by an air blower, passes toward a mist capture chamber at high speed. In the mist capture chamber, while the air passes through a bag-shaped non-woven fabric, the oil mist moves along an axis direction of the bag-shaped non-woven fabric toward a bottom by the inertial force and the gravity thereof. Therefore, oil mist results in being further removed from air blown on a filter wall portion on its way in an air passage along the axis direction of the bag-shaped non-woven fabric. Oil mist still remaining in the air blown on the filter wall portion is filtered by the filter wall portion as well. Therefore, the cleaned air is discharged from the filter wall portion.

Abstract: A diesel particulate removing apparatus of a two-vessel three-layer catching structure has two main bodies. Respective main bodies have cylindrical vessels provided with inlet ports and outlet ports for a diesel exhaust gas. In the cylindrical vessel, rolled catalyst mounting heaters, heat-resisting filters, and catalyst mounting spherical filters are arranged in the order above at an inlet port of a diesel exhaust gas. These catalyst mounting heaters are alternatively turned ON or OFF.

Abstract: A diesel particulate removing apparatus is provided which is capable of regenerating, with ease and at low costs, a function of a clogged filter. The diesel particulate removing apparatus is made up of an outer cylinder being attached, in an embedded manner, to an exhaust gas path of a diesel engine and having apertures on sides of flow-in and flow-out of diesel exhaust gas and two or more filter units being housed in the outer cylinder to collect or to collect and burn particulates contained in the diesel exhaust gas to remove them. The filter units are connected to each other along a flow of the diesel exhaust gas and combined with flow-out and flow-in cylinders for the diesel exhaust gas to make up an inner cylinder of a sealed structure, with portions on sides of the flow-in and flow-out of the exhaust gas being not included in the sealed structure.

Abstract: A metal filter is provided which is capable of enhancing efficiency of seizing and removing black smoke minute particles by simplified and low-cost configuration. The metal filter is made up of a corrugated roll-shaped metal porous body fabricated by winding up, in a multi-layer manner and in a vortex form, a metal plate in which many through holes having surface-protrusions at edge portions and which repeatedly forms a sine-wave shaped rising and falling structure. Exhaust gas from a diesel engine passes through clearances among layers of the metal porous body and black smoke minute particles contained in the exhaust gas are seized and removed. The through holes are formed in crest portions and trough portions making up the rising and falling portions. Approximately all or a greater part of surface-protrusions are formed on column-like concave portions corresponding to lower parts of the crest portions and to upper parts of the trough portions.

Abstract: A personal tabletop-type air cleaner is provided which is user-friendly and can improve smoke sucking efficiency in a simple configuration. The disclosed personal tabletop-type air cleaner has a front opening portion to suck air containing smoke of a cigarette, a blower to forcedly feed air having been sucked into the front opening portions in a centrifugal manner, a pair of right and left peripheral opening portions each being placed in a fringe portion on the right and the left at a front of the air cleaner and forming an air curtain by emitting air fed forcedly from the blower ahead of the front of the air cleaner, a dust collecting filter being placed between the front opening portion and the blower to remove cigarette odor, and a deodorizing filter being placed between the blower and each peripheral opening portion making up the pair of right and left peripheral opening portions to remove cigarette odor.

Abstract: An electric dust collecting unit disclosed herein includes a corona discharging portion for giving rise to corona discharge to electrically charge cigarette smoke particulates, toner, and other floating particulates in air, an electric collecting portion disposed on a leeward side of this corona discharging portion, for electrically collecting the floating particulates charged at the corona discharging portion, and a box-type frame with its opposite surfaces opened, in such a configuration that the corona discharging portion has a plurality of needle electrodes which is disposed in such a way that their respective needle tips may be directed toward the leeward side (that is, with their backs directed toward a front face opening in the box-type frame).

Abstract: A diesel particulate removing apparatus of a two-vessel three-layer catching structure has two main bodies. Respective main bodies have cylindrical vessels provided with inlet ports and outlet ports for a diesel exhaust gas. In the cylindrical vessel, rolled catalyst mounting heaters, heat-resisting filters, and catalyst mounting spherical filters are arranged in the order above at an inlet port of a diesel exhaust gas. These catalyst mounting heaters are alternatively turned ON or OFF.

Abstract: In a disclosed electric dust-collecting unit, needle electrodes face laterally against openings, so that a person in charge of replacement or maintenance/inspection of the electric dust-collecting unit can be prevented in safety from being injured on his fingers or body by needles. Therefore, this type of the electric dust-collecting unit can be applied in an air cleaner not only in offices but also in homes. In addition, this type of the electric dust-collecting unit does not employ a conventional box-pillar type needle support, so that its air flow path is not suppressed with a resultant remarkable decrease in a pressure loss, thus contributing to compacting of the electric dust-collecting unit and hence the air cleaner.

Abstract: An air flow generating apparatus relating to an apparatus for generating air stream by corona discharge without a mechanically operating section and is used for an air cleaning apparatus or an air conditioner. This apparatus has a plurality of electrode plates arranged at a predetermined interval to form an air flow passage, a number of ionizing wires arranged at predetermined intervals at a position from the ends of the electrode plates, and rod-shaped magnets attached to the ends of the respective electrode plates. Since ions produced by corona discharge are accelerated magnetically by the magnets, ion flowing velocity is accelerated, thereby remarkably increasing the velocity and air pressure of the air stream generated.