In an air conditioner, an upper heat exchanger and a lower heat exchanger exchange heat between air and a refrigerant. An air cleaner includes a charging unit for charging particles in the air and a dust collecting unit for collecting the particles charged by the charging unit by an electrostatic force. An indoor unit body houses the upper heat exchanger and the lower heat exchanger and houses the air cleaner of which the center position in the height direction is positioned lower than a connection part between the upper heat exchanger and the lower heat exchanger.

A braking system for safely collecting brake dust produced by operation of a braking mechanism. The braking system comprises a collector apparatus coupled with a braking mechanism. The collector apparatus is able to include a shroud that surrounds the braking mechanism and a catch element coupled with the shroud for collecting brake dust exiting the shroud. As a result, when coupled with the braking mechanism, the collector apparatus is able to ensure that most or all brake dust, such as copper or other particles from the braking mechanism that break off from the breaking mechanism during operation of the braking mechanism, are removed from the braking mechanism and collected by the filter/catch of the collector mechanism.

An air cleaner includes a rear filter receiving air from the outer environment, an ionizer grid connected to a high voltage power supply and having wires extending between opposite sides of a frame such to emit positively charged ions and apply an electrostatic charge on the air received from the rear filter; a collector grid connected to ground and having wires extending between opposite sides of a frame, the combination of the ionizer and collector grids causing the air to move toward the collector grid; a front filter collecting contaminants suspended in the air received from the collector grid; and an apparatus frame housing the rear filter, the ionizer and collector grids, and the front filter, wherein the frames of the ionizer and collector grids are suspended within the apparatus frame with isolating members made of a non-arc tracking material, such to minimize coronal discharge and reduce audible noise.

Air filtration systems and methods for HVAC units in transport compartments are provided. The air filtration systems and methods described herein use electrostatic forces to capture airborne particles and include a modular design so as to be configured to the space requirements of the transport compartment and reduce air flow resistance. The air filtration system includes one or more modular filtration units. Each of the modular filtration units includes a pre-filter section, an ionizing section and a collecting section.

An electronic air filter containing a tubular collecting electrode and an ion emitting electrode located concentrically inside of the tube-like collecting electrode, the collecting electrode consists of outer electrically conductive shell and inner layer made of open cell porous material.

An electronic air filter containing two separate parts: an inlet part and an outlet part; an ionizer located in the inlet part; a collector located in the outlet part; the inlet part is detachable from the outlet part. The inlet part is a door. The outlet part contains detachable set of collecting electrodes.

An air cleaning apparatus includes ion generation electrode, a collecting electrode, and a support portion. The ion generation electrode is configured to apply a high-voltage to thereby form a high-voltage electric field between the collecting electrode and the ion generation electrode. A passage is formed between the ion generation electrode and the collecting electrode along the high-voltage electric field direction. The support portion is configured to provide electrical isolation and mechanical support for the ion generation electrode and the collecting electrode. A surface of the support portion between the ion generation electrode and the collecting electrode comprises a surface coating layer configured to resist ion bombardment and the accidental arcing. A transformer frequency adjusting system includes a frequency storage cell, a control module, and a drive module, and can work with the air cleaning apparatus, alone, or with other apparatuses.

An electrostatic dust collector-purifier is provided, which includes a top cover, a base, two side baffles, a front grille, and a rear grille, characterized by: a power generation mechanism, the power generation mechanism being located inside the base and including a high-voltage generator, a low-voltage terminal fixedly connected to one side of the high-voltage generator, and a ground terminal fixedly connected to one side of the high-voltage generator; a dust collection mechanism, the dust collection mechanism being located between the base and the top cover, the dust collection mechanism including a metal dust collection support and a metal electrode sheet fixedly connected to the interior of the metal dust collection support, the metal dust collection support being washable and reusable; and a filtering mechanism, the filtering mechanism being located between the base and the top cover.

Presented are a method and apparatus for evacuation. An exemplary fluid evacuation system includes a surgical apparatus having a fluid conduit therethrough. The system further includes a vacuum tube fluidly coupled with the fluid conduit, and an electrostatic precipitator fluidly coupled with the fluid conduit. Additionally, the system includes a vacuum source fluidly coupled with the vacuum tube, wherein the vacuum source is operable to create a flow of fluid through the fluid conduit, the vacuum tube and the electrostatic precipitator.

An electro-ionic device that includes an outer frame, a first conductor, an insulating frame, and a second conductor. The outer frame defines a passageway there through. The first conductor is positioned within the outer frame and includes at least one wire configured to be supplied with a voltage. The insulating frame is positioned within outer frame and forms a non-conductive barrier between the first conductor and the outer frame. The second conductor is positioned within and contacts the outer frame.