A vertical lighting vaneless inverter fan comprises a body, a blast system, an air supply column, a lighting device and a sound-reducing structure. The blast system is mounted in the inner chamber of body. The air supply column is installed on the top of body. The blast system supplies air to the air supply column, the airflow is jetted from the air supply column. The impeller is located above the motor. When the blast system is installed in the inner chamber of body case, the impeller corresponds to the bottom of air outlet, so that the wind can be delivered through the air outlet directly.

A conveying unit (1) for a fuel cell system (31) for conveying and/or recirculating a gaseous medium, in particular hydrogen, comprising a jet pump (4) driven by a driving jet of a pressurized gaseous medium, and comprising a metering valve (6) with a nozzle (12), wherein: the conveying unit (1) is designed as a combined valve jet pump assembly (2); the gaseous medium is fed to the jet pump (4) by means of the metering valve (6); the jet pump (4) has a main body (8); and the jet pump (4) is connected to an anode inlet (3) of a fuel cell (29). According to the invention, a deflection and/or change of direction of the gaseous medium which flows in a flow direction VII from the jet pump (4) to the anode input (3) of the fuel cell (29) occurs exclusively in the deflection region (22), said the jet pump (4) having a separate closure cover (5) connected to the main body (8), and the deflection region (22) and/or the deflection- or guiding geometry of the deflection region for the gaseous medium (22) is formed exclusively in the component of the closing cover (5).

In a vacuum ejector provided with a seal valve mechanism between a vacuum generation mechanism and a break flow path, the seal valve mechanism includes a valve plug that is biased toward a sealing opening from the break flow path side to block the seal opening, and is configured to open the seal opening by moving the valve plug away from the seal opening using a piston portion that operates according to supply air supplied from the vacuum generation mechanism.

A jet and venturi tube arrangement is provided for a fuel delivery module. The arrangement includes a venturi tube 14 having an opening 15, an internal wall 24 and a central axis C. A jet 10′ is provided that has an exit 22. The jet 10′ is constructed and arranged to spray a stream 12 of fuel from the exit 22 into the opening 15 of the venturi tube 14 substantially along the central axis C. The jet 10′ has surface features 20, near the exit, constructed and arranged to divert a portion 12′ of the stream 12 of fuel so that the portion 12′ contacts the internal wall 24 of the venturi tube 14 thereby limiting back flow of fuel through the opening of the venturi tube.

A jet and venturi tube arrangement is provided for a fuel delivery module. The arrangement includes a venturi tube 14 having an opening 15, an internal wall 24 and a central axis C. A jet 10′ is provided that has an exit 22. The jet 10′ is constructed and arranged to spray a stream 12 of fuel from the exit 22 into the opening 15 of the venturi tube 14 substantially along the central axis C. The jet 10′ has surface features 20, near the exit, constructed and arranged to divert a portion 12′ of the stream 12 of fuel so that the portion 12′ contacts the internal wall 24 of the venturi tube 14 thereby limiting back flow of fuel through the opening of the venturi tube.

An air outlet cylinder of a bladeless fan is provided, having an air cylinder and a nozzle; the air cylinder is provided with an air inlet for receiving airflows, and an internal channel; the front-end sidewall of the air cylinder is provided with an opening extending longitudinally therethrough; the inner wall surface at each of two sides of the opening in the air cylinder is separately provided with a limiting groove extending longitudinally therethrough; the nozzle has a mouth part embedded in the opening, and two airflow guiding parts respectively embedded in the corresponding limiting grooves; multiple air outlet slits are longitudinally spaced on the mouth part; airflows received in the internal channel are sprayed from the air outlet slits. A bladeless fan having the air outlet cylinder is also provided.

The invention relates to a jet pump collector comprising a convergent duct extending along the longitudinal axis (AX) and comprising an intake opening for a fluid to be withdrawn, this convergent duct having a restriction shape terminated by a reduced end having a smaller cross-section than its intake opening. This convergent duct is equipped with a tube (17) orientated perpendicular to the longitudinal axis longitudinal (AX), this tube (17) comprising an outer portion extending outside of the convergent duct and being terminated by an intake opening (31) for a propulsion fluid, and an inner portion extending in the convergent duct and comprising a plurality of distribution openings (18, 19) for the propulsion fluid which are orientated towards the reduced end.

A blower includes a first extension having a first discharge port formed in a first wall, a second extension having a second discharge port formed in a second wall facing and spaced apart from the first wall, a fan provided below the first and second extensions to guide air toward each of the first tower and the second tower, a first gate provided inside the first tower or protruding from the first wall, a second gate provided inside the second tower or protruding from the second wall, a first guide motor to change a position of the first gate, and a second guide motor to change a position of the second gate.

A blower may include a first case and a second case provided above the first case and having a first tower and a second tower that have a passage therebetween. A display assembly is received in the second case at a position that does not interfere with air flowing in the passage. An inner surface of the second tower and an outer surface of a diffuser define a space in which the display assembly is received.

Embodiments disclosed herein may provide an air conditioner having a case and a cover coupled to the case. A cover separation unit may separate the cover from the case at upper and lower sides. The cover separation unit may include a lever that slides along an outer surface of the case and a pusher rotatably coupled to the lever to rotate to push the cover. A guide may guide the pusher to rotate as the pusher is moved along an outer surface of the case.