Systems, methods, and apparatus are contemplated in which a tube cell that produces a dielectric barrier discharge (DBD) is individually configured to minimize the mixing of unwanted byproducts of the generated plasma with an exhaust air stream. The tube cell generates a DBD within a tube cell, such that oxidants or radicals are generated in an environment substantially separated from the exhaust stream. The generated oxidants are directed to intersect with the exhaust stream to minimize the generation of unwanted byproducts. The tube cells are further shaped and arranged in tube cell arrays to alter the flow dynamics of the exhaust stream and the oxidant or radical streams, including mixing of the streams.

The present disclosure is drawn to printing systems. In one example, a printing system can include a pretreatment head and an inkjet print head. The pretreatment head can include a surface barrier discharge plasma generator to apply a plasma treatment to a media substrate. The inkjet print head can be positioned with respect to the pretreatment head to form a printed image on the media substrate after the plasma treatment.

A wing comprising a leading edge forming a caisson delimited by a wall and an electrically conductive skin forming a lower surface and an upper surface and pierced with holes. A pump is provided to suck the air present in the caisson and/or to inject air into the caisson. The wing includes a voltage generator. Each hole is equipped with an anti-clogging system which comprises an electrically conductive electrode, an electrically insulating body having a stem which lodges in the hole and which has a central orifice in which the electrode lodges. The outer face of the stem has at least one tooth, where each tooth protrudes from the outer face of the stem and extends over the height of the stem. The at least one tooth is distributed around the stem so as to create at least one channel.

A system for controlling temperature of a body (6) comprising a DBD actuator (9) connectable to a power source to produce an ionic wind on the body; a control unit (8) to select an initial configuration and to control the power source (5) depending on a temperature difference (?T) between an input temperature (T.sub.i) and a target temperature (T.sub.ta) on the body (6), wherein the initial configuration comprises the following constructive parameters of the DBD actuator: number, shape, geometry, relative position of electrodes (d), dielectric material, dielectric thickness (e), wherein the initial configuration further comprises the following setting parameters to be set in the power source (5): a frequency value (f), an amplitude value (V), a waveform signal and a duty cycle, wherein the control unit (8) adjusts the initial configuration by modifying any of the setting parameters to control the heat transferred to the surface of the body.

A system for preventing icing on an aircraft surface includes a plasma actuator which is applied onto an aircraft surface operationally exposed to air and which is arranged for generating at least one plasma discharge (D) for inducing a flow (F) of ionized hot-air particles towards the surface.

A wing comprising a leading edge composed of a skin transparent to microwaves, magnetrons implanted under the skin and arranged in rows and in columns alongside one another, between two successive rows of magnetrons, a discharge row successively comprising an electrode and a ground electrode, where each electrode passes through the skin and where each ground electrode is under the skin.

A cooling device cools an electronic component using a plasma actuator provided with a dielectric, a first electrode arranged on one surface of the dielectric to generate an induced flow, and a second electrode arranged on the other surface of the dielectric, in which the electronic component and a third electrode are arranged in a flow direction of the induced flow, and a voltage applied to the third electrode is a voltage that generates a potential difference, which is capable of attracting the induced flow, between the first electrode and the third electrode.

A method of plasma treatment of an internal and/or external surface of a hollow electrically non-conductive body. The internal surface of the body and/or its external surface acts a layer of electrical plasma of a surface dielectric barrier discharge generated in a volume of gas by alternating or pulse voltage with an amplitude higher than 100 V from a pair of liquid electrodes formed by an internal electrically conductive liquid situated inside the body and by an external electrically conductive liquid situated outside the body. The electrical plasma is generated above the surface of the electrically conductive liquid, where in the volume of the gas forms a layer of electrical plasma forming a ring copying the shape of the surface of the body wherein the electrical resistance between the liquid electrodes is greater than 10 k. The invention also is a device for carrying out the aforementioned method.

A blower having high efficiency and low noise by actively controlling airflow in the blower, and an air conditioner having the blower is provided. The air conditioner has a blower. The blower includes a fan having a hub and at least one blade provided on an outer circumferential surface of the hub, a motor to rotatably drive the hub, a shroud configured to surround the periphery of the fan and at least one actuator installed in the shroud and configured to form an airflow along an inner circumferential surface of the shroud.

Disclosed is a method of manufacturing an airfoil structure. The airfoil structure includes a plurality of airfoils, a support for supporting the airfoils, and a case for covering the airfoils. Each airfoil includes an airfoil body, and an airflow generator for producing induced airflow by generating plasma. The method includes a process of forming the airflow generator that includes a first electrode forming step of forming a first electrode on the airfoil body, a dielectric layer forming step of forming a dielectric layer on the airfoil body by forming ceramic powder into a film to cover the first electrode through room temperature impact consolidation, and a second electrode forming step of forming a second electrode on a surface of the dielectric layer, such that the second electrode is electrically connected to the first electrode, and an alternating-current voltage is applied to the second electrode.