An elongate air delivery assembly having a housing extending between two end caps. The housing includes a plurality of exit vents from which airflow is provided in a consistent sheet at a uniform velocity, and the housing is rotatable about a central longitudinal axis to change a direction of the airflow. A method of improving plant cultivation includes positioning one or more elongate air delivery systems adjacent rows of plants such that the sheet of air generated by the elongate air delivery system is directed horizontally across the plants underneath their plant canopy.

This invention relates to a cross-flow wave making pump comprising an impeller shell forming a water intake and a water outlet, an impeller assembly pivotally connected to two ends of the impeller shell, and a motor used for driving the impeller assembly; wherein, the impeller assembly comprises an impeller used for driving a liquid flow, a first turntable and a second turntable respectively fixed at two ends of the impeller, wherein the first turntable is provided with a shaft rotatably mounted in the impeller shell, the second turntable is provided with a cavity used for receiving a rotor shaft of the motor. The embodiments of the present invention can provide a sufficient liquid-circulation in a container, and significantly reduce the dead zone where the liquid flows extremely slowly. Other embodiments are disclosed.

This invention relates to a cross-flow wave making pump comprising an impeller shell forming a water intake and a water outlet, an impeller assembly pivotally connected to two ends of the impeller shell, and a motor used for driving the impeller assembly; wherein, the impeller assembly comprises an impeller used for driving a liquid flow, a first turntable and a second turntable respectively fixed at two ends of the impeller, wherein the first turntable is provided with a shaft rotatably mounted in the impeller shell, the second turntable is provided with a cavity used for receiving a rotor shaft of the motor. The embodiments of the present invention can provide a sufficient liquid-circulation in a container, and significantly reduce the dead zone where the liquid flows extremely slowly. Other embodiments are disclosed.

An air-guiding device which is arranged in a top rear region of a vehicle and includes an air-guiding element which is shiftable from a retracted inoperative position to an extended operating position, wherein, in both positions, the air-guiding element serves for guiding air in the rear region of the motor vehicle. At least one propeller of the air-guiding device which, together with the air-guiding element, is shiftable between the retracted and extended positions, wherein the propeller, in the extended operating position, is fixable in a first operating state, wherein the at least one propeller, in the extended operating position, is operable in a second operating state in order to produce a throughflow in the direction of travel, and wherein the at least one propeller, in the extended operating position, is operable in a third operating state in order to produce a throughflow opposed to the direction of travel.

An air-guiding device which is arranged in a top rear region of a vehicle and includes an air-guiding element which is shiftable from a retracted inoperative position to an extended operating position, wherein, in both positions, the air-guiding element serves for guiding air in the rear region of the motor vehicle. At least one propeller of the air-guiding device which, together with the air-guiding element, is shiftable between the retracted and extended positions, wherein the propeller, in the extended operating position, is fixable in a first operating state, wherein the at least one propeller, in the extended operating position, is operable in a second operating state in order to produce a throughflow in the direction of travel, and wherein the at least one propeller, in the extended operating position, is operable in a third operating state in order to produce a throughflow opposed to the direction of travel.

The invention relates to a heat exchange module (402) for a motor vehicle, comprising: a first heat exchanger (404) comprising at least a first stage (404a) and a second stage (404b), said first heat exchanger being configured such that the first and the second stages are in fluid connection within the same cooling circuit (600) of the motor vehicle; a ventilation device (408) comprising at least one tangential fan (410) for setting in motion an air flow (F) intended to pass through the first heat exchanger (404), and wherein the first (404a) and second (404b) stages of the first heat exchanger (404) are arranged opposite each other, one behind the other with respect to the direction of flow of the air flow (F), so that the air set in motion by the tangential fan (410) successively passes through the first stage (404a) and then through the second stage (404b).

The invention relates to a heat exchange module (402) for a motor vehicle, comprising: a first heat exchanger (404) comprising at least a first stage (404a) and a second stage (404b), said first heat exchanger being configured such that the first and the second stages are in fluid connection within the same cooling circuit (600) of the motor vehicle; a ventilation device (408) comprising at least one tangential fan (410) for setting in motion an air flow (F) intended to pass through the first heat exchanger (404), and wherein the first (404a) and second (404b) stages of the first heat exchanger (404) are arranged opposite each other, one behind the other with respect to the direction of flow of the air flow (F), so that the air set in motion by the tangential fan (410) successively passes through the first stage (404a) and then through the second stage (404b).

An air conditioner includes an air conditioner body including a cross-flow air duct and an air outlet in communication with the cross-flow air duct, a cross-flow impeller arranged at the cross-flow air duct and located upstream of the air outlet, and an air guide assembly including an air guide member rotatable around a pivot axis at the air outlet. The air conditioner body includes a first volute and a second volute arranged opposite to each other in a cross section perpendicular to a rotation axis of the cross-flow impeller. The cross-flow air duct is located between the first volute and the second volute. A set air duct is formed between the air guide member and the first volute when an air output volume of the air conditioner is maximum. A width of the set air duct in the cross section first increases and then decreases along an air output direction.

A cross-flow fan includes a plurality of fan blades provided to be circumferentially spaced apart from each other. The fan blade has an inner edge portion arranged on the radially inner side to/from which air flows in/out, and an outer edge portion arranged on the radially outer side to/from which air flows in/out. Fan blade has a blade surface extending between the inner edge portion and the outer edge portion. The blade surface includes a pressure surface arranged on the rotation direction side of the cross-flow fan and a suction surface arranged on the back side of the pressure surface. When cut along a plane orthogonal to the rotation axis of the cross-flow fan, the fan blade has a blade cross-sectional shape in which a concave portion concave from the pressure surface is formed.

A cross-flow fan includes a plurality of fan blades provided to be circumferentially spaced apart from each other. The fan blade has an inner edge portion arranged on the radially inner side to/from which air flows in/out, and an outer edge portion arranged on the radially outer side to/from which air flows in/out. Fan blade has a blade surface extending between the inner edge portion and the outer edge portion. The blade surface includes a pressure surface arranged on the rotation direction side of the cross-flow fan and a suction surface arranged on the back side of the pressure surface. When cut along a plane orthogonal to the rotation axis of the cross-flow fan, the fan blade has a blade cross-sectional shape in which a concave portion concave from the pressure surface is formed.