Apparatus for generating energy from flowing water, which comprises a paddle wheel rotatable around a horizontally disposed shaft, with a plurality of paddles arranged along an outer circumference of the paddle wheel. The apparatus further comprises channeling means for channeling a water stream in a range of the paddle wheel that is located under the horizontally disposed shaft, and a generator for generating electric energy, driven by the paddle wheel. Automatically, setting means optimally set a position taken up by the paddle wheel relative to a water surface of the water stream. With this apparatus, an interaction taking place between the water stream and individual paddles of the paddle wheel is optimized.

A centrifugal fan includes an impeller, a motor and a fan frame. The motor is connected with the impeller and configured to drive the impeller. The fan frame includes a base plate, a top plate, a sidewall and air deflectors. The impeller is disposed between the base plate and the top plate. The sidewall is disposed on the base plate between the base plate and the top plate. A flow channel is between the impeller and the sidewall. The air deflectors are directly connected to the base plate and the top plate, and disposed toward an air outlet and sequentially at different radial positions outwardly from the sidewall along a forward circumferential direction toward an air outlet with respect to the impeller to sequentially expand the flow channel outwardly in a radial direction at different circumferential positions along the forward circumferential direction with respect to the impeller. The airflow entry tunnels are formed by the air deflectors between the base plate and the top plate.

A vibration-proofed fan frame includes a housing and a base surrounded by the housing. A hollow tube is arranged on the base and has the rotary connection with an impeller of the heat dissipation fan. The base includes a disc and a plurality of ribs extending outwards from periphery of the disc. The fan frame further includes a buffer member within the structural interconnections between the disc and the housing. The buffer member includes first elements. The first elements are embedded in the disc. A heat dissipation fan having the fan frame described is also presented.

A rotary cylinder type compressor includes: a cylinder that is rotatably placed in an inside of a housing; a rotor that is placed in an inside of the cylinder and is rotatable about an eccentric axis that is eccentric to a rotational central axis of the cylinder; and a partition member that partitions a working chamber formed between an outer peripheral surface of the rotor and an inner peripheral surface of the cylinder into a suction space and a compression space. When a pressure of fluid in the compression space is equal to or larger than a reference pressure, a contact stress, which is exerted at an adjoining portion between the outer peripheral surface of the rotor and the inner peripheral surface of the cylinder, is increased in comparison to a case where the pressure of the fluid in the compression space is smaller than the reference pressure.

A generator device for generating an induced electrical power from the movement of a fluid stream. The generator device can include a circumferential casing that houses a stator, a power storage system and a power management system that receives the induced electrical power, and a propeller-rotor assembly located in the central opening of the casing and rotatably coupled to the casing. The propeller-rotor assembly has two or more propeller blades with distal ends opposite the axis of the propeller-rotor assembly to which magnets are attached. The device can also have a tether assembly for anchoring the generator device in a moving fluid stream and positioning the generator device so that the movement of fluid stream through the generator device causes the propeller-rotor assembly to rotate and, thereby, through interaction with the stator, to generate the induced electrical power. The generator device can be portable and easily deployed by a single user.

An apparatus comprising a meter device with a rotating component configured to rotate in response to a flowing fluid, an indexing unit coupled with the meter device and configured to process signals from the meter device resulting in values for measured parameters of a flowing fluid, and an energy harvester coupled to the pair of impellers, the energy harvester comprising a first harvesting unit and a second harvesting unit that co-operate to generate an electrical signal, the first harvesting unit configured to co-rotate with the pair of impellers, the second harvesting unit comprising a hollow, magnetic core disposed proximate the first harvesting unit.

A wave power plant (1) comprising: a frame construction (2, 2), a plurality of rocking rotors (2) arranged on the frame construction (2, 2) on at least on rotor axis (4), a drive axis (30) connected to a generator and journaled in said frame construction (2, 2); and at least one belt drive connection (40) arranged between the rotor axis (4) and the drive axis (30) for each rocking rotor (3).

A rotor which comprises at least one blade and at least one fluid routing device that is mechanically connected to one of the blades so that a fluid inlet thereof is placed in a lateral edge of the blade. The fluid routing device has a continuous channel with an inlet facing the opposite direction of rotation of the blades and an outlet. The continuous channel is sized and shaped to conduct fluid passing via the inlet. The fluid routing device includes a flow directing element that is mechanically connected to the outlet so as to direct the conducted fluid to adjust fluid flow in or on the mechanically connected blade.

A fluid pump for conveying a fluid may include an internal rotor rotatable about an axis of rotation relative to an external stator and an impeller connected to the internal rotor in a rotationally fixed manner configured to convey a fluid. The internal rotor may include a rotor receiving sleeve having a base body. The base body may include a receiving chamber configured to receive an anchor unit. The internal rotor may further include a bearing bushing penetrating the rotor receiving sleeve coaxially to the axis of rotation. The bearing bushing may be configured to receive a rotor shaft. The impeller may be directly connected to the rotor receiving sleeve in a rotationally fixed manner.

An apparatus comprising a meter device with a rotating component configured to rotate in response to a flowing fluid, an indexing unit coupled with the meter device and configured to process signals from the meter device resulting in values for measured parameters of a flowing fluid, and an energy harvester coupled to the pair of impellers, the energy harvester comprising a first harvesting unit and a second harvesting unit that co-operate to generate an electrical signal, the first harvesting unit configured to co-rotate with the pair of impellers, the second harvesting unit comprising a hollow, magnetic core disposed proximate the first harvesting unit.