Abstract: A fan assembly for a refrigerator interior includes a lower housing where a fan that rotates around a rotation axis as a center is installed, the rotation axis extending in an up-down direction; an upper housing that includes an inlet that sucks air from the refrigerator interior; and a side housing that covers a surrounding portion of the fan, wherein any one of the upper housing, the lower housing, and the side housing includes a flow straightening member that straightens a flow of air that is discharged from the fan, and wherein any one of the upper housing, the lower housing, and the side housing includes a discharge port.

Abstract: A blower includes a rotor, a stator, an impeller, and a housing. The stator includes a stator core including an umbrella portion radially outward of the magnet, a first core portion radially outward of the umbrella portion and extending in a first direction orthogonal or substantially orthogonal to the radial direction, and a second core portion connecting the umbrella portion to the first core portion, an insulator at least partly covering the first core portion, and a coil defined by a conductive wire wound around the first core portion with the insulator interposed between the conductive wire and the first core portion. The housing includes a first region radially outward of the coil. The first region includes a radially inner surface that is radially opposed to a radially outer surface of the coil.

Abstract: An impeller is rotatable about a vertically extending central axis and includes a base portion extending radially outward as it extends downward, first blades circumferentially arrayed on the upper surface of the base portion and extending on one side in the circumferential direction as it extends upward, and second blades between the circumferential direction of the circumferentially adjacent first blades and extending on one side in the circumferential direction as it extends upward. The radial outer end of the second blade is on one side in the circumferential direction relative to the middle in the circumferential direction of the radial outer end of the circumferentially adjacent first blade.

Abstract: A fan device includes an impeller rotating around a central axis and a motor disposed farther downward than the impeller. The impeller includes a base unit enlarged downward and plural blades disposed on a peripheral surface of the base unit. Upper portions of the blades are positioned at a leading end of a rotating direction with respect to lower portions. In an outer end portion on a front surface of each blade at the leading end of the rotating direction, a radial-direction component of a normal unit vector of an upper end portion of the blade is smaller than that of a lower end portion, assuming that an outer peripheral side of the blade is a positive direction. A thickness of a root of the lower end portion is larger than that of the upper end portion.

Abstract: An air blowing device includes a motor, a ring-shaped cover, an impeller, and an impeller housing. The impeller includes a base portion and moving blades. The impeller housing includes an exhaust air guide portion. The ring-shaped cover includes a ring-shaped cover upper face portion and a ring-shaped cover outer edge portion having faces disposed across a gap that configures a flow path through which a fluid is guided. The gap has a first width where a distance between the faces is shortest, and which is smaller than a flow-in opening width where the fluid flows into the gap and a flow-out opening width where the fluid flows out.

Abstract: An impeller includes a disk-shaped portion and rotor blades. The rotor blades include first rotor blades which includes a first curvature portion and second curvature portions. A center of a radius of curvature of the first curvature portion is on a first side. A center of a radius of curvature of each second curvature portion is on a second side. The radius of curvature of the second curvature portion radially outward is greater than the radius of curvature of the second curvature portion radially inward. The rotor blades include second rotor blades each of which is circumferentially between adjacent ones of the first rotor blades. Each second rotor blade includes third curvature portions. A center of a radius of curvature is on the second side. The radius of curvature of the third curvature portion radially outward is greater than the radius of curvature of the third curvature portion radially inward.

Abstract: A blower apparatus according to an exemplary embodiment of the present invention includes a motor including a shaft arranged to extend along a central axis extending in a vertical direction, and a bearing arranged to rotatably support the shaft; an impeller coupled to the shaft on an upper end side of the shaft; an impeller housing arranged to house the impeller, and including an air inlet on an upper side; a plurality of stationary vanes arranged on a lower side of the impeller housing; a cylindrical first ring arranged radially inside of the stationary vanes; and a cylindrical second ring arranged radially outside of the stationary vanes, and fixed to the impeller housing. The stationary vanes, the first ring, and the second ring are defined by a single monolithic member, and together define at least a portion of a stationary vane support portion.

Abstract: A blower includes an impeller rotatable about a central axis extending in a vertical direction, a motor on a lower side of the impeller that rotates the impeller about the central axis, and a duct including an airflow passage in an inner space, a suction port through which a fluid flows in the inner space, and an air outlet through which the fluid is discharged from the inner space, the impeller being accommodated in the duct. The impeller includes blades arranged in a circumferential direction, an annular shroud that connects upper portions of the blades and includes an opening opposing the suction port in an axial direction, and a base plate that connects lower portions of the blades and extends in a radial direction. The duct includes a cover covering at least a portion of the blade and an upper portion of the shroud. An inner diameter of the shroud is equal to or larger than an outer diameter of the base plate.

Abstract: An air blower includes a motor including a shaft, an impeller fixed to the shaft, and a motor housing disposed radially outwardly of the motor. The impeller includes an impeller base that extends radially outwardly at an axially lower position. The impeller base includes a boss section fixed to the shaft. The motor housing includes an upper surface cylindrical section that extends axially upward from a radially inner end of the motor housing upper surface. At least a portion of a radially inner surface of the upper surface cylindrical section is radially opposed to a radially outer surface of the shaft or the boss section, and an axially upper end of the upper surface cylindrical section is disposed over an axially lower end of the impeller base and over an upper end of a bearing.

Abstract: A blowing device includes a motor including a rotor rotatable about a central axis extending in an up-down direction, an impeller fixed to the rotor and rotatable together with the rotor, a motor housing on a radial direction outer side with respect to the motor and housing at least a portion of the motor, a blower case on the radial direction outer side with respect to the motor housing, and connection portions that connect the motor housing and the blower case to each other in the radial direction. The connection portions include a first connection portion with a communication hole that communicates an inner portion of the motor housing and an outer portion of the blower case to each other.

Abstract: A blowing device includes a motor including a rotor rotatable, an impeller, a motor housing, a blower case, and stator blades including at least a first stator blade provided with a stator blade recess portion. A communication hole in the motor housing is provided in the first stator blade and is in communication with the stator blade recess portion. The first stator blade includes front and rear wall portions. Axial directions of the front and rear wall portions are longitudinal directions thereof. The communication hole is provided in the circumferential direction and between the front wall portion and the rear wall portion. The first stator blade includes a connection wall portion. An upper surface of the connection wall portion extends towards an axial direction lower side as the upper surface extends towards a radial direction inner side.

Abstract: A blower includes a motor including a shaft that is disposed along a vertically extending central axis, an impeller fixed to the shaft and rotating around the central axis, a motor housing at least a portion of which is disposed on an outside of the motor in a radial direction, a blower case at least a portion of which is disposed on the outside of the motor in the radial direction from an outer surface of the motor housing in the radial direction, and a circuit board below the motor housing and circuit elements disposed therein. A lower end portion of the motor housing includes a housing contraction portion, in which a length of the motor housing in the radial direction decreases as it extends downwardly.

Abstract: A cyclone type dust collecting apparatus according to an exemplary embodiment of the claimed disclosure includes a collection container having a tubular shape extending in a front-rear direction, the collection container including a front end surface and a rear end surface, an inflow portion into which air flows, the inflow portion being connected to a peripheral surface of the collection container, and an inner cylinder that penetrates the rear end surface, a portion of the inner cylinder being disposed inside the collection container. In the cyclone type dust collecting apparatus, the inner cylinder includes, at a peripheral surface in a portion positioned inside the collection container, an outlet through which the air flows out, the rear end surface has a width that is larger than that of the front end surface, and the inflow portion is disposed unevenly on a front side.

Abstract: A blower apparatus includes a motor portion having a central axis extending in a vertical direction; an impeller arranged above the motor portion, joined to a rotating portion of the motor portion, and arranged to rotate to send a gas from above radially outward; an impeller cover portion including an inner surface arranged to cover an outer circumference of the impeller and an upper side of an outer edge portion of the impeller, and further including an air inlet defined in a center thereof; a body cover portion joined to the impeller cover portion, arranged to cover an outer circumference of the motor portion, and arranged to define a tubular space between the body cover portion and a housing tubular portion defining an outer surface of the motor portion and extending in the vertical direction to assume a tubular shape; and a plurality of guide vanes arranged in a circumferential direction in the tubular space, and each of which is arranged to extend in a radial direction between an inner surface of the bod

Abstract: A blowing device includes an impeller that rotates about a central axis, a motor disposed below the impeller in a central axis direction that drives the impeller to rotate, and a motor housing surrounding the motor. The motor housing includes a motor housing top plate extending in a direction orthogonal to the central axis and facing a lower surface of the impeller, and a motor housing cylindrical portion extending downwardly in the axial direction from an outer edge of the motor housing top plate in a radial direction. A top plate recess portion extending from the outer edge of the motor housing top plate in the radial direction to an inside in the radial direction and recessed downwardly is defined on an upper surface of the motor housing top plate.

Abstract: A blower apparatus includes a motor portion having a central axis extending in a vertical direction; an impeller arranged above the motor portion, joined to a rotating portion of the motor portion, and arranged to rotate to send a gas from above radially outward; an impeller cover portion including an inner surface arranged to cover an outer circumference of the impeller and an upper side of an outer edge portion of the impeller, and further including an air inlet defined in a center thereof; and a body cover portion joined to the impeller cover portion, arranged to cover an outer circumferential surface of the motor portion, and arranged to define a tubular space between the motor portion and the body cover portion. The tubular space includes an upper region and a lower region arranged below the upper region.

Abstract: An impeller includes a main plate spreading radially with respect to the center axis, a plurality of blades provided on an upper surface of the main plate and arranged side by side in a circumferential direction, a shroud connected to tops of the plurality of blades and having an intake port that is an opening extending upward, and a mount portion provided on the upper surface of the main plate and positioned on an inner side with respect to a radially outer end of the main plate. The mount portion has a plurality of recesses each being depressed downward from an upper surface of the mount portion and extending in a direction away from the center axis.

Abstract: A fan includes an impeller rotated about the vertically extending central axis, a motor rotating the impeller, a motor housing housing the motor, and a fan casing disposed radially outside the motor housing to form a flow passage in a gap therebetween. A plurality of first stationary blades that axially extend and a second stationary blade that axially extends are disposed radially outside the motor housing. The first stationary blades are arranged in a circumferential direction. The second stationary blade is disposed between the first stationary blades adjacent to each other in the circumferential direction. An upper end of the second stationary blade is disposed further to a lower side than upper ends of the first stationary blades and further to an upper side than lower ends of the first stationary blades.

Abstract: A blower includes a motor that includes a shaft; an impeller; a motor housing; a blower housing that is disposed on an outer side of the impeller in a radial direction, and that opposes an outer surface of the motor housing in the radial direction with a gap therebetween; a circuit board that is disposed below the motor in an axial direction; and a circuit-board case that is disposed below the motor in the axial direction and that surrounds the circuit board. The circuit-board case includes a circuit-board-case inlet that communicate between an outer side and an inner side of the circuit-board case at an upper end portion of a circuit-board-case cylindrical portion that extends in a direction of a central axis.

Abstract: A blower includes an impeller, a motor that rotates the impeller, an electronic component that is disposed below a stator in an axial direction, and a circuit board that is disposed below a motor housing in the axial direction. The motor housing includes a motor housing inlet that has a cylindrical shape extending in the axial direction, that extends below a lower end of a blower housing in the axial direction and surrounds an outer side of the electronic component in a radial direction, that is formed below the lower end of the blower housing in the axial direction, and that allows an inner side and an outer side of the motor housing in the radial direction to communicate with each other.