A fan blade (1) has a front inflow edge (2) and a rear outflow edge (3). The fan blade (1) has an at least partially wavy inflow edge (4) that forms a wave (W) having a specific three-dimensional waveform.

A compressor has a rotor assembly having an impeller for generating an airflow through the compressor, a stator core assembly for causing rotation of the impeller, and a diffuser assembly for acting on the airflow generated by the impeller. The diffuser assembly has a first diffuser stage and a second diffuser stage. The first and second diffuser stages are separate components connected to one another by a fastener.

The present disclosure relates to a portable air purifier. In the portable air purifier, a fan base is disposed between a fan module including a mixed flow fan and a filter, and forms a passage that connects between the filter and the fan module while coupling the filter and the fan module. Accordingly, the portable air purifier can ensure improvement in air purification performance with no increase in the size of the portable air purifier.

The present disclosure relates to a portable air purifier. In the portable air purifier, a fan base is disposed between a fan module including a mixed flow fan and a filter, and forms a passage that connects between the filter and the fan module while coupling the filter and the fan module. Accordingly, the portable air purifier can ensure improvement in air purification performance with no increase in the size of the portable air purifier.

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 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 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.

An illustrative example embodiment of a multistage compressor includes a first compressor stage, a second compressor stage downstream of the first compressor stage, and a motor section between the first compressor stage and the second compressor stage. The motor section includes a housing and a motor within the housing. A space between the motor and the housing establishes a flow path for fluid to flow from the first compressor stage to the second compressor stage. A plurality of ribs within the space have a curvature along at least a portion of a length of the ribs that changes a direction of fluid flow within the space such that the fluid flows downstream of the curvature in a direction parallel to a longitudinal axis of the housing.

An illustrative example embodiment of a multistage compressor includes a first compressor stage, a second compressor stage downstream of the first compressor stage, and a motor section between the first compressor stage and the second compressor stage. The motor section includes a housing and a motor within the housing. A space between the motor and the housing establishes a flow path for fluid to flow from the first compressor stage to the second compressor stage. A plurality of ribs within the space have a curvature along at least a portion of a length of the ribs that changes a direction of fluid flow within the space such that the fluid flows downstream of the curvature in a direction parallel to a longitudinal axis of the housing.