An impeller fan assembly that includes a housing, a stator, a rotor having a hub and an annular array of non-stationary blades extending from the hub, at least two spaced apart bearings mounted to the stator, and a pump in fluid communication with the bearings to provide fluid to the bearings. A screw pump is provided within the hollow portion of the shaft. Inlet of the screw pump is fluidly coupled to the sump and outlet is in fluid communication with the bearings. Rotation of the screw pump pumps fluid from the sump to the bearings. A de-swirler is provided within the sump to reduce rotational movement of the fluid within the sump. The de-swirler has a hub with fixed curved vanes extending from the centerline of the hub. The curved vanes have curvature in a direction opposite from a rotational direction of the screw pump.

A vane pump includes a rotor that is rotationally driven; vanes inserted into the rotor in a freely slidable manner; pump chambers that are defined between the vanes at adjacent positions; suction ports that guide working oil to the pump chambers; suction pressure chamber that is communicated with the suction ports and that stores the working oil; and a suction passage that is connected to the suction pressure chamber and that has an suction opening end that opens at an outer surface of a pump body. In a state in which the vane pump is mounted, the suction pressure chamber is mounted below the suction opening end of the suction passage.

The invention relates to a continuous-flow energy installation, in particular a wind power installation, having an at least approximately drop-shaped housing, from the inlet opening of which to the outlet opening the flow channel delimited by the channel wall extends. The propeller is mounted rotatably about the longitudinal axis and fluid flowing through the flow channel, flows axially onto the propeller. The axial position of the propeller can be varied by means of the spacing adjustment drive. Alternatively or additionally the channel wall is variable. The length of the flow channel is, for example, adjustable by means of the length adjustment drive. These variation possibilities make it possible to adapt the energy generation by means of the generator to changed conditions of the fluid stream, in particular the wind.

The wind turbine generator includes a rotating disk and a wind turbine generator including a wind turbine, a generator, and a wind collection body, and supports the wind turbine generator at a point away from a center of the rotating disk with a wind flow inlet of the wind collection body facing the center of the rotating disk.

A wind turbine includes a tower, the tower having an upper part, a middle part and a lower part. The lower and the middle part of the tower form the base of the tower, waste heat generating equipment located in the middle part of the tower, and a cooling device with at least one cooling device inlet formed in the tower for introducing outside air surrounding the tower into the tower. The cooling device is adapted to guide the outside air from each cooling device inlet into the lower part of the tower such that the outside air can ascend towards the middle part and upper part of the tower while cooling the waste heat generating equipment. each cooling device inlet is located in the upper part of the tower.

A compressor (2) characterized by being equipped with: a rotary shaft (12); multiple impellers attached to the rotary shaft; a main flow path that guides a fluid from the prior-stage impeller to the latter-stage impeller; a chamber (31) that forms a circle centered around the axial line and connects to the main flow path; a suction nozzle (32) that guides the fluid from the outer circumferential side toward the inner circumferential side in the chamber; multiple movable vanes provided in the main flow path at intervals in the circumferential direction of the axial line and capable of moving and thereby adjusting the flow volume of the fluid passing through the main flow path; and a drive mechanism (42) that is provided at one side in the circumferential direction of the suction nozzle (32) within the chamber (31), and that changes the angle of the multiple movable vanes. In addition, of the one side and the other side in the circumferential direction within the chamber (31), the suction nozzle (32) is inclined toward the other side so as to increase the flow volume of the fluid toward the other side.

An air moving device has a housing with a primary flow path and a secondary flow path that extends from a secondary inlet of the housing and empties into an inner outlet adjacent the primary flow path. An impeller assembly rotates a blade to cause air to enter the housing and flow along the primary flow path. The flow of air through the primary flow path creates a low pressure region at the inner outlet of the secondary flow path, causing air to flow through the secondary flow path and mix with the air in the primary flow path. The mixture of air flows through a downstream portion of the primary flow path having an expanded width compared to an upstream portion of the primary flow path and exits the housing. Stator vanes may extend longitudinally within the housing to cause columnar air flow. The device may be used for destratification of thermal gradients of air within an enclosure, such as a home or warehouse.

In accordance with one aspect the present invention may comprise a regenerative blower comprising: a housing, a first port and second port in the housing, an airflow channel extending between the first and second ports for airflow between the ports, an impeller rotatable in an impeller channel to promote airflow in the airflow channel from the first port to the second port, a motor to drive the impeller, and an interrupter between the first and second ports to limit airflow from the second port to the first port.

In accordance with one aspect the present invention may comprise a regenerative blower comprising: a housing, a first port and second port in the housing, an airflow channel extending between the first and second ports for airflow between the ports, an impeller rotatable in an impeller channel to promote airflow in the airflow channel from the first port to the second port, a motor to drive the impeller, and an interrupter between the first and second ports to limit airflow from the second port to the first port.

An air moving device has a housing with a primary flow path and a secondary flow path that extends from a secondary inlet of the housing and empties into an inner outlet adjacent the primary flow path. An impeller assembly rotates a blade to cause air to enter the housing and flow along the primary flow path. The flow of air through the primary flow path creates a low pressure region at the inner outlet of the secondary flow path, causing air to flow through the secondary flow path and mix with the air in the primary flow path. The mixture of air flows through a downstream portion of the primary flow path having an expanded width compared to an upstream portion of the primary flow path and exits the housing. Stator vanes may extend longitudinally within the housing to cause columnar air flow. The device may be used for destratification of thermal gradients of air within an enclosure, such as a home or warehouse.