Abstract: A fan assembly includes an internal housing having an outer internal housing, and an inner internal housing partially disposed within the outer internal housing. The inner internal housing defines an internal cavity, and has a curved exterior surface. Stator blades extend between the inner internal housing and the outer internal housing.

Abstract: A pump side part for use with a centrifugal slurry pump for pumping a fluid mixture containing particulate matter, the pump side part comprising a main body having a main axis, the main body including a side wall section which extends laterally with respect to the main axis and has opposite facing first and second sides, a plurality of formations on a surface of the second side including an inner formation and an outer formation in spaced relation to the inner formation, the formations being configured so that in use the formations generate a flow of the fluid mixture across the surface which detaches from the surface the particulate matter adjacent thereto.

Abstract: A dynamically controlled cooling device includes a stand having deployable legs for positioning the stand on a floor in a selectable position. A fan is coupled to the stand. A fan direction motor is coupled to the stand for selectively rotating the fan relative to the stand. A camera having a targeting function for identifying a person within a field of vision of the camera is coupled to the fan. A processor is operationally coupled to the camera and the fan direction motor to rotate the fan to point at the person.

Abstract: An operation panel for a machine tool includes: a blower device that includes a plurality of blade sections and a center axis section, the plurality of blade sections rotating around a center axis, the center axis section having a circular columnar shape around the center axis and being disposed on a radial-directional inside about the center axis relative to the plurality of blade sections the blower device sucking air in an axial direction about the center axis and blowing out the air in the axial direction about the center axis an opposed wall that is disposed on an air suction side of the blower device and that is disposed so as to face the blower device in the axial direction about the center axis; and an intermediate member that is provided between the opposed wall and the center axis section in the axial direction about the center axis.

Abstract: A marine pump may have a nozzle interface and a detachable strainer base. The nozzle interface may have an aperture for removably receiving a nozzle, and a detent channel defined therein. The detent channel may be configured to receive portion of a detent, which may be configured to contact the nozzle and hold the nozzle in place when inserted into the nozzle interface. The detachable strainer base may have a plurality of slots and a plurality of holes configured to interact with and stop particulates in a fluid passing through the strainer base.

Abstract: A blower vacuum, the blower vacuum including a nozzle forming a first opening, a fan housing in fluid communication with the nozzle, an inlet exhaust housing rotatably coupled to the fan housing, and a debris housing. The fan housing forms a second opening. A fan assembly is positioned at the fan housing. The inlet exhaust housing includes an inlet portion and an exhaust portion. The inlet exhaust housing is rotatable to a first position forming a blower operation and a second position forming a vacuum operation. The debris housing is coupled to the exhaust portion of the inlet exhaust housing.

Abstract: A centrifugal compressor includes: a housing including an intake flow path; a compressor impeller arranged in the intake flow path; a movable portion arranged upstream of the compressor impeller in a flow of an intake air; and a groove formed in an area other than a surface located on a downstream side in the flow of the intake air in the movable portion.

Abstract: A rotary pump includes a balance drum connected to a pump shaft between a hydraulic unit and the pump shaft, an axial relief passage between a balance drum and a stationary part stationary relative to a pump housing, and a balancing device arranged between the balance drum and the hydraulic unit, the balancing device including a ring-shaped rotary part connected to the pump shaft, and a ring-shaped non-rotary part movable only in the axial direction, the rotary part having an axial face facing the hydraulic unit, the rotary part and the non-rotary part overlap in a radial direction, which is perpendicular to the axial direction, and the non-rotary part movable in the axial direction such that a radial relief passage is open during operation of the pump, with the radial relief passage extending in the radial direction between the rotary part and the non-rotary part.

Abstract: A fan brake structure includes a fan and a brake device. The fan has a frame body, a fan impeller and a stator. The brake device is disposed under a bottom of a bearing cup. The brake device has a driving member, a brake member and an elastic member. The elastic member abuts against one end of the brake member. The other end of the brake member has a boss body. The driving member has a spiral rail. When the driving member rotates, the boss body moves along the spiral rail, whereby the brake member linearly reciprocally moves upward to brake the fan impeller or linearly reciprocally moves downward to release the fan impeller from the braking.

Abstract: A vertical axis windmill turbine comprises a support structure for supporting the vertical axis windmill turbine above ground level. At least one rotor rotates upon the support structure and has a horizontal structure having a rotational axis perpendicular to the ground level. A plurality of blades are positioned within each of the at least one rotor for causing the at least one rotor to rotate on the support structure responsive to wind force. A plurality of vanes are located on each of the plurality of blades and rotate between an open position to limit drag on the at least one rotor and a closed position that provides a rotational force to the at least one rotor. The plurality of vanes rotate between the open position and the closed position of approximately 180°. A plurality of hinges each connect a vane of the plurality of vanes to a blade of the plurality of blades.

Abstract: A system includes a balance drum shaft, a rotating balance drum, a stationary balance drum, an adjustable radial clearance, and a gear wheel. The balance drum shaft has a rotational ability. The rotating balance drum is connected to and disposed circumferentially around the balance drum shaft. The stationary balance drum has an outer circumferential surface, an inner circumferential surface, and drum teeth machined into the outer circumferential surface of the stationary balance drum. The stationary balance drum is disposed circumferentially around the rotating balance drum. The adjustable radial clearance is delineated by an outside of the rotating balance drum and the inner circumferential surface of the stationary balance drum. The gear wheel includes gear teeth. The gear teeth and the drum teeth are configured to interact to rotate the stationary balance drum upon rotation of the gear wheel.

Abstract: Apparatus, systems, and articles of manufacture are disclosed to dynamically support axial thrust in pumps. Examples disclosed herein include a thrust bearing system including a thrust disc coupled to an impeller shaft; a first thrust pad coupled to a body of the pump, the first thrust pad positioned on a forward side of the thrust disc; a second thrust pad coupled to the body of the pump, the second thrust pad positioned on an aft side of the thrust disc; and a spring-loaded assembly integrated into the first and second thrust pads, the spring-loaded assembly connected to a pump outlet via a first flowline, the first flowline to transmit a working fluid from the pump outlet to the forward side of the thrust disc or the aft side of the thrust disc based on a position of the spring-loaded assembly.

Abstract: A guide vane in a gas turbine engine includes an inner platform, an outer platform, and an airfoil extending therebetween. Side surfaces of the inner platform and outer platform between an adjacent guide vane define a first seal slot, a second seal slot, and a third seal slot forming a closed loop having three corners. At least one of the corners is rounded. The guide vane includes tubulator ribs and pin fins disposed in an airfoil interior. The pin fins are disposed in a region of the trailing edge. The inner platform defines film cooling holes disposed at an outer surface facing the airfoil. The film cooling holes are arranged in a fan shape. An inner surface of the inner platform and an outer surface of the outer platform include impingement cooling ribs. The inner platform protrudes further towards upstream in a flow direction than the outer platform.

Abstract: A method and system of controlling operation of wind turbines is provided, the method including (a) receiving a parameter value which is based on at least one sensor signal, (b) determining a difference between the received parameter value and a predetermined value, (c) comparing the difference with a threshold value, and (d) if the difference is below the threshold value, operating the wind turbines in a first mode of operation, (e) if the difference is not below the threshold value, incrementing an alert counter, comparing the alert counter with an alert threshold value, operating the wind turbines in a second mode of operation if the alert counter is smaller than the alert threshold value or if the alert counter exceeds the second threshold value and the difference is decreasing, triggering an alarm if the alert counter exceeds the alert threshold value and the difference is not decreasing.

Abstract: Provided is a wind turbine blade, with a generally hollow blade body including half shells and webs the webs including flanges connecting the respective web to the respective half shell, and with webs being supported via reinforcement structures relative to the respective half shell, which reinforcement structures are arranged between an outer and an inner layer of each half shell and extend in the lengthwise direction of the blade, whereby the reinforcement structures each include at least one stack composed of several glass fiber layers infused with resin, and that at least one stiffening element extending parallel to the first and second reinforcement structures over at least a part of their length including at least one stack composed of several pultruded composite strips including carbon fibers with the strips being fixed in the resin is arranged between the first and second reinforcement structures.

Abstract: A centrifugal heat dissipation fan including a housing and an impeller disposed in the housing on an axis is provided. The housing has at least one inlet on the axis and has a plurality of outlets in different radial directions. A heat dissipation system of an electronic device is also provided.

Abstract: A valve device includes: a valve box in which an inlet flow passage into which steam flows and an outlet flow passage through which the steam flows are formed, and in which a valve chamber that connects the inlet flow passage and the outlet flow passage is formed; and a plurality of valve bodies configured to regulate a flow rate of the steam flowing through the outlet flow passage by relative movement to the outlet flow passage. The valve box includes a valve box main body in which the inlet flow passage, the outlet flow passage, and an opening portion are formed, a lid portion that is attachable to and detachable from the valve box main body and closes the opening portion, and a cleaning nozzle that is disposed to penetrate through the lid portion and is configured to supply a cleaning liquid into the valve chamber from the outside.

Abstract: The present disclosure relates to air assemblies having an inflation, a deflation, and a closed state for use with inflatable products, such as air mattresses. Specifically, the present disclosure relates to air assemblies where the configuration of the air assembly can be changed manually by a user by operating a directional control valve to inflate, deflate, or close the inflatable product. The directional control valve may also activate a pump in the inflation and deflation states and deactivate the pump in the closed state.

Abstract: A rotor blade for a wind turbine has a rotor blade root defining a reference plane for attachment to a hub. Adjacent to the rotor blade root is a profile region extending to the rotor blade tip. In the profile region, the rotor blade has a blade profile defining a chord. The chord angle between the reference plane and the chord increases over the entire profile region, from the rotor blade root towards the rotor blade tip.

Abstract: A scroll structure of a centrifugal compressor according to an embodiment is a scroll structure of a centrifugal compressor having a scroll passage formed in spiral shape, comprising: a tongue portion separating the scroll passage from an outlet passage connected to the downstream side of the scroll passage at the most downstream position of the scroll passage in a passage connecting portion where a winding start portion and a winding end portion of the scroll passage intersect; and a ridge portion protruding from an inner peripheral surface of the scroll passage on the axially downstream side of the centrifugal compressor toward the axially upstream side of the centrifugal compressor, with a protruding height toward the axially upstream side gradually increasing toward the tongue portion from a starting position that is located upstream from the tongue portion in the scroll passage.