A membrane vacuum pump has at least one working space which is bounded by a membrane deformable to change the size of the working space and by a wall in which at least one inlet and at least one outlet are formed for a medium which is sucked into the working space which increases in size in so doing in a suction phase and is expelled via the outlet from the working space which decreases in size in so doing in a compression phase. The membrane vacuum pump furthermore has a controllable actuator unit for deforming the membrane by a contactless action on the membrane by means of electrical and/or magnetic fields.

Provided is a multi-pulsed jets generating apparatus including: at least one actuator that generates pulsed jets in a plurality of orifices according to a volume change of a plurality of cavities caused by vibration of at least one diaphragm; and a manifold connected to the at least one actuator so as to generate multi-pulsed jets by receiving the pulsed jets occurring in the plurality of orifices. The velocity and uniformity of the pulsed jets occurring in the plurality of injection ports can be controlled according to vibration phases of a plurality of diaphragms.

A double acting pump mechanism is described for mounting on a wheel for inflating a pneumatic tire. The double acting pump mechanism includes a housing having a first pump chamber and a second pump chamber; wherein a diaphragm separates the first pump chamber from the second pump chamber; the housing further including an inlet port in fluid communication with the first pump chamber, and an outlet port in fluid communication with the second pump chamber, and wherein the outlet of the first pump chamber is in fluid communication with the inlet of the second pump chamber; a striker plate is positioned for reciprocation in the housing; the striker plate being connected to a diaphragm holder, wherein the diaphragm holder engages the diaphragm and actuates the diaphragm in the first and second pump chamber. Preferably the striker plate is actuated by a permanent or electro magnet mounted on a stationary part, or the striker plate is actuated by an electrically driven magnet.

Provided is a high frequency oscillating ventilator comprising a housing assembly, a linear actuator, a linear coil, a piston mounted on a pushrod, a diaphragm dividing a housing into a first and second side and having an opening formed on the second side that is fluidly connected to the patient's airway for delivering gas thereto. The linear actuator is fixedly mounted to the housing assembly and has a linear coil coaxially disposed therewithin. A pushrod supports the linear coil on the linear actuator to allow relative axially sliding therebetween. The piston is directly mounted to the diaphragm such that reciprocation thereof as effectuated by the linear coil cooperating with the linear actuator alternately produces positive and negative pressure waves in the gas in the patient's airway.

Disclosed is a valve-less micro pump configuration that includes plural micro pump elements, each including a pump body having a compartmentalized pump chamber, with plural unobstructed inlet ports and outlet ports and a plurality of membranes disposed in the pump chamber to provide compartments. The membranes are anchored between opposing walls of the pump body and carry electrodes disposed on opposing surfaces of the membranes and walls of the pump body.

A fluid control device (1) includes a case (21) including a case top plate, a case side plate, and a case bottom plate and having an internal space (59) and a cavity, a pump (11) provided at a position at which the pump (11) divides the internal space (59) into a bottom-plate-side region and a top-plate-side region, the pump (11) being configured to generate a flow of a fluid between the bottom-plate-side region and the top-plate-side region and control the flow direction of the fluid, and a fixing member (31) that fixes the case (21) in place. The case (21) is mounted on the fixing member (31) by using the case top plate or the case bottom plate as a mounting surface (B).

The present disclosure relates to an electrostatically actuated device comprising at least one electrode chamber extending along a direction of extension between a first electrode chamber end including at least one first fluid channel, and a second electrode chamber end including at least one second fluid channel. The at least one electrode chamber includes at least one lateral electrode extending laterally along the direction of extension, and is adapted to receive a deformable electrode configured to cooperate with the at least one lateral electrode such as to be actuated between at least a first position and a second position, to push reversely a volume of fluid through at least one channel chosen between the at least one first fluid channel, and the at least one second fluid channel. The invention present disclosure also relates to spectacles comprising such electrostatically actuated device

A device for detecting a content of critical gas in a mining chamber of a tunnel boring machine includes a separation module by which a fluid fed in via an extraction line connection is cleaned of solid and liquid components. A gas line arrangement arranged downstream of the separation module in the flow direction of the fluid carries the fluid, including substantially only gaseous components, through a pressure reducer and through a flow control valve of a metering module by which the gas to be analyzed can be delivered in a controlled manner assisted by a double diaphragm pump and a pressure stabilizer to a gas analysis unit even at high pressures in the cavity.

The disclosure describes a fluid plate assembly that includes a plurality of fluid plates and one or more seals between the plurality of fluid plates. The plurality of fluid plates are coupled together to form a fluid passage. At least one fluid plate of the plurality of fluid plates includes a plurality of holes and one or more fluid channels. The plurality of holes are configured to spray pressurized fluid on at least a portion of one or more components of a rotary machine. The one or more fluid channels that form the fluid passage are configured to direct the pressurized fluid to the plurality of holes.

A synthetic jet includes a casing, a vibrating membrane and a guiding channel. The casing has a chamber. The casing has an inlet and an outlet opposite to each other. The inlet and the outlet communicate with the chamber. The chamber is configured to accommodate gas. The outlet corresponds to a heat source. The vibrating membrane isolates and divides the chamber into a first subsidiary chamber and a second subsidiary chamber. The inlet communicates with the first subsidiary chamber. The second subsidiary chamber has a second subsidiary chamber opening communicating with the outlet. The guiding channel communicates with the first subsidiary chamber and the outlet. When being driven, the vibrating membrane reciprocally deforms towards the first subsidiary chamber and the second subsidiary chamber.