Abstract: A low-head and high flow water turbine machine comprises a water-guiding base having a top plate, a bottom plate, an accommodating space defined therein, an inlet and an outlet respectively arranged at upstream side and downstream side, and a first and a second lateral plates respectively having a first and a second water-guiding walls that are respectively extending inward toward circumference of the accommodating space, a water turbine arranged in the accommodating space and having multiple blades, and a cylindrical-shaped gate shell passing through the top plate and slidably coupled to circumference of water turbine around upstream side wherein an opening degree is adjusted through sliding the gate shell for adjusting cross-sectional area of stream thereby controlling stream discharge entering to the water turbine, switching off rotation of the water turbine, and adjusting water level at high water level state at upstream side according to the stream discharge requirement.

Abstract: Example implementations relate to a fan module. The fan module may include an outer impeller having a first plurality of radial blades arranged between an inner circumference of the outer impeller and an outer circumference of the outer impeller. The outer impeller may be rotatable about a first axis of rotation. The fan module may include an inner impeller having a second plurality of radial blades, the inner impeller disposed within the inner circumference of the outer impeller and rotatable about a second axis of rotation.

Abstract: A centrifugal fan includes a casing side plate with a casing inlet, a spiral scroll, a tongue, a casing outlet, a main plate, a retaining ring, multiple blades arranged between the main plate and the retaining ring, and an air-intake space surrounded by the blades. The centrifugal fan further includes an airflow accelerator in the air-intake space for increasing an airflow speed of a gas toward the blades.

Abstract: A directed force turbine device utilizing forces of wind or water current flow featuring a wheel-style rotor assembly having side panels connected via a plurality of curved vanes, the rotor assembly rotates on bearings about a fixed axle shaft, the curved vanes harness the incoming current flow, which drives rotation of the rotor assembly, the vanes surround the fixed axle shaft and form an inner cavity; a stator assembly disposed in the inner cavity of the rotor assembly, the stator assembly does not rotate with the rotor assembly, the stator assembly comprises flow directors wherein entering current flow is directed in between the flow directors which functions to apply a positive force against forward moving vanes of the rotor assembly; a funnel assembly and external flow director for controlling intake of the current flow; and an exhaust port.

Abstract: A wind turbine for capturing energy from a fluid flow comprises a rotor having a rotational axis and a plurality of rotor blades (104) arranged for rotation about the rotational axis. The rotor blades extend longitudinally in a direction substantially parallel to the rotational axis. A shield member V3 is arranged to shield some of the rotor blades from an oncoming wind where incidence of the wind on those rotor blades would act against rotation of the rotor in the direction of rotation. The rotor blades (104) are distributed about the circumference of the rotor and are spaced from the rotational axis, defining a substantially cylindrical space within the rotor through which the wind passes. The shield member V3 is defined by a radially inward surface and a radially outward surface. The radially inward surface follows substantially a portion of the circumference of the rotor. The radially outward surface of the shield member V3 comprises a first portion which meets the radially inward surface.

Abstract: A vertical-axis eolic generator is described. The vertical-axis eolic generator may comprise a plurality of vanes and a driving shaft connected to a load bearing structure. The driving shaft may be coupled to the plurality of vanes.

Abstract: A cross-flow fan includes a plurality of fan blades circumferentially spaced from each other. The fan blade has an inner edge portion on the radially inner side, and an outer edge portion on the radially outer side. A blade surface extends between the inner edge portion and the outer edge portion. The blade surface includes a pressure surface on the rotation direction side of the fan and a suction surface on the opposite side. In cross-section orthogonal to the rotation axis of the fan, the fan blade has a concave portions formed at the pressure surface and the suction surface. A plurality of concave portions are formed at pressure surface. Side fan provides excellent blowing capacity. Also disclosed are a molding die for use in production of the cross-flow fan, and a fluid feeder provided with the cross-flow fan.

Abstract: A cross-flow fan that variably maintains a distance between a blade and a fluid flow guide by varying a height of an outer edge and an air conditioner having the cross-flow fan are provided. Therefore, a noise and a peak value of a spectrum between the blade and the outer edge can be reduced.

Abstract: A transverse fan assembly that includes a fan rotatably disposed in an air plenum for drawing air through an inlet opening and drivingly forcing air from an outlet opening defined by the air plenum, the inlet opening having an elongate, bladed, inlet rotor oriented on a rotational axis parallel to the fan, extending the length of the fan, and positioned proximate to the fan periphery to increase air flow from the outlet of the air plenum along the length of the fan while generating less noise.

Abstract: A cooling fan is provided that does not place limitations on the installation conditions for the fan, is capable of cooling a backlight unit of a display panel with high efficiency, and produces less noise during operation. Also provided is an image display apparatus equipped with the cooling fan. The cooling fan includes a fan rotator composed of a rotational shaft that is rotationally driven by a driving motor and two vanes that have parallel revolution shafts that rotate together with the rotational shaft, are freely rotatable on the shafts, face one another, and revolve around the rotational shafts and a vane angle control unit that implements control so that each vane has a maximum rotation angle when a revolution angle of the vanes is in a vicinity of a first revolution angle and each vane has a rotation angle of 0° when a revolution angle of the vane is in a vicinity of a second revolution angle that is perpendicular to the first revolution angle.

Abstract: In an air conditioner, reverse inhalation is prevented while broad band noise and wind sound are reduced. There are provided a projection 12b arranged at the leading end of a stabilizer 12 on the downstream side of an air stream F flowing along a surface 12a of the stabilizer opposing an impeller so as to protrude toward the impeller to define the shortest distance to the impeller, and a plurality of grooves 12e or projections provided on the opposing surface on the upstream side of the projection 12b so as to disturb the air stream flowing along the opposing surface 12a. The positions of the grooves 12e or the projections are arranged apart in a rotational axis direction E. A plurality of convex portions are provided so as to disturb an air stream flowing along a surface of a casing opposing the impeller, and the positions of the convex portions are arranged apart in the rotational axis direction of the impeller.

Abstract: An apparatus for cooling of electronic components of the present invention are provided with a heatsink and a blower with an electric drive. The heatsink comprises a base and heat exchanging means. The electric drive comprises a stator and a rotor with an axle; the stator is rigidly built-in to the heatsink. The blower comprises a radial type magnetized impeller as the rotor. The base provides thermal contact with the electronic component and the heat exchanging means. The base is comprised of at least two layers composite material thereof including at least one layer of electrically insulating material and at least one layer of thermally and electrically conductive material that including the stator.

Abstract: A coaxial wind turbine apparatus which includes a pair of rearward-mounted, spring-loaded fins to orient the air inlet opening to face the direction of the oncoming wind and close a damper panel or shutter array at the air inlet opening during very high wind conditions. Thereby, the pair of rearward-mounted, spring-loaded fins stabilizes the apparatus during strong ambient wind conditions and minimizes damage to the rotating turbine wheel in the presence of a strong wind.