A blower includes: a base; a case disposed above the base and provided with an inlet and an outlet; a fan disposed inside the case and forming a flow of air from the inlet to the outlet; a rotating plate disposed below the case and rotatably disposed on the base, in which the base includes a rotating shaft housing that is a cylindrical shape and protrudes toward the rotating plate, and the rotating plate includes a shaft body that protrudes downward from the center and is inserted into a shaft insertion groove of the rotation shaft housing and at least one bearing that is disposed on a lower surface of the rotating plate, is radially spaced from the shaft body, and is in contact with an upper surface of the base.

A blower includes: a base; a case disposed above the base and provided with an inlet and an outlet; a rotating plate disposed below the case and rotatably disposed on the base; an electric wire whose part is exposed to an outside of the base and the other part extends upwards of the rotating plate through the base; and an electric wire holder including an electric wire holder that is fixedly disposed on the rotating plate and fixes one side of the electric wire extending towards of the rotating plate from an inside of the base, in which the base includes an electric wire fixing protrusion that fixes the other side of the electric wire extending from an outside to an inner space of the base and an electric wire guide rib that fixes a partial arrangement of the electric wires whose arrangement is changed in an inner space of the base according to a movement of the rotating plate.

A motor including a rotating portion that is rotatable about a center axis that extends vertically and a stationary portion that rotatably supports the rotating portion. The stationary portion includes a stator facing at least a portion of the rotating portion in a radial direction, a base disposed axially below the stator, and a resin portion covering at least a portion of the stator, connecting the stator and the base. The base includes a recessed portion that is recessed downward in an axial direction and that accommodates at least a portion of the resin portion. The recessed portion includes an inner peripheral surface provided with an upper wall portion disposed axially above a portion of the resin portion.

A fan engagement structure for the fan to quickly and securely plug into or extract out of another structure. The fan engagement structure includes a frame main body. The frame main body has a first end and a second end. The frame main body has an internal hollow passage. The first end is mated with a fan. The frame main body has a first side and a second side. An engagement elastic plate extends from the first side. The surface of the engagement elastic plate has a latch section. The second side has a finger latch section, whereby the fan can be quickly and securely plugged into or extracted out of the other structure.

The present invention provides support frames for positive pressure blowers having one or more wheels mounted at a lower corner of the frame, wherein the wheels are mounted to roll in a direction that is perpendicular to the flow of air through the blower. This sideways orientation of the wheels allows a frame carrying a blower to be easily moved from side to side, such as when placed into or removed from a side compartment on an emergency vehicle, and allows such a frame carrying a blower to be easily tilted, turned and rolled around at the scene of a fire in much the same manner as a wheelbarrow. Embodiments of the invention may include an upper handle or grip which allows a user to control the frames by tilting and rolling them around on the wheels. Embodiments of the invention may include a support bracket for holding a battery or other power supply.

Blowers with variable nozzles are provided. A blower includes a fan, and a main body housing the fan, the main body defining an airflow path extending between an inlet end and an outlet end. A blower further includes a variable nozzle disposed at the outlet end. The variable nozzle includes an attachment collar, the attachment collar comprising a body defining an exterior surface and an interior surface and extending along a longitudinal axis. The variable nozzle further includes a plurality of air control bodies, each of the plurality of air control bodies movably connected to the attachment collar and comprising an air control surface and an extension rod. The variable nozzle further includes an adjustment collar, the adjustment collar disposed around the attachment collar and defining a plurality of adjustment channels, wherein each of the plurality of extension rods is disposed in one of the plurality of adjustment channels.

A method, system and apparatus for a vibration-masking device for use in the bed emits sufficient vibration to mask ambient vibrations and aid in sleep and relaxation. Low frequency vibrations also help reduce the risk of deep vein thrombosis, also referred to as DVT. The apparatus is designed to be cooled so as to avoid overheating when used in the bed or in upholstered furniture.

The invention relates to a side-channel compressor (1) for a fuel cell system (37) for conveying and/or compressing a gas, particularly hydrogen, comprising a housing (3), the housing (3) comprising a housing upper part (7) and a housing lower part (8), a compressor chamber (30) located in the housing (3), comprising at least one peripheral side channel (19), a compressor wheel (2) arranged in the housing (3), which is rotatably arranged about an axis of rotation (4), the compressor wheel (2) comprising blades (5) arranged on the periphery thereof in the region of the compressor chamber (30), and respectively a gas inlet (14) embodied in the housing and a gas outlet (16) which are fluidically interconnected by means of the compressor chamber (30), particularly the at least one side channel (19). According to the invention, the compressor wheel (2) comprises a peripheral stop ring (11) on the periphery thereof, which extends around the compressor wheel (2) in a rotationally symmetric manner in relation to the axis of rotation (4).

End element for the stator of an electric motor of a hermetically sealed refrigerant compressor including at least one isolating element, having a ring-like core, to cover an axial end portion of the stator and to isolate a stator core and stator windings. The end element includes several spring holders extending radially outside the isolating element, each spring holder being adapted to hold a spring for supporting the electric motor in a housing of the hermetically sealed refrigerant compressor. The spring holders are oriented parallel to the axis of the isolating element and an insertion part of each spring holder extends in a first axial direction beyond the neighboring area of the isolating element. The spring holders and the isolating element are integral parts of the end element. The spring holders are tiltable so that an extended part of a spring holder tilts radially inwards.

A fan includes an annular frame, a rail assembly, a driving member and blades. The blades are connected to the driving member. The driving member is electromagnetically movable along the maglev assembly that extends along an edge of the annular frame. The driving member does not contact the annular frame or the maglev assembly so that when the fan is used, the maglev assembly is energized to generate an electromagnetic force between the maglev assembly and the driving member to move the driving member along the edge of the annular frame to drive the blades to rotate. Therefore, the blades can be rotated without having to use any motor behind the annular frame, thereby reducing the volume of the fan.