A blower for a breathing apparatus has a diffuser for increasing static pressure and/or reducing noise and/or mitigating pressure instabilities and/or managing reverse flow.

A blower configured for a breathing apparatus which can have a diffuser for increasing static pressure and/or reducing noise and/or mitigating pressure instabilities and/or managing reverse flow. The diffuser can be located within a housing, such as along with a motor, between an impeller and an outlet. The diffuser can include diffuser elements arranged in cascades, and can include one or more circumferential rings to direct air.

A radial turbomachine has a first housing part and a second housing part, which jointly form and delimit a flow channel. The first housing part forms a motor chamber for accommodating a drive motor, and the second housing part forms a gas inlet. Furthermore, a radial impeller is provided, which can be driven about an axis of rotation by the drive motor in order to suction a gas from outside the turbomachine through the gas inlet into the flow channel and to convey said gas out of the flow channel through a gas outlet to the outside. The first housing part or the second housing part forms the gas outlet at a radial distance from the axis of rotation and peripherally delimits the gas outlet.

An electric fan and a vacuum cleaner having the same are provided. The electric fan includes: a cover having an open side; an impeller disposed in the cover; a diffuser including a diffuser body and a plurality of vanes, the diffuser body being located at a side of the impeller adjacent to the cover, the plurality of vanes being disposed at an end of the diffuser body adjacent to impeller and spaced apart from one another along an outer circumference of the impeller, an outlet angle of each vane being denoted as β, and β satisfying: 45°≤β≤90°; and a refluxer disposed at an end of the diffuser body away from the impeller. The electric fan reduces flow losses of airflow, and improves work efficiency.

The present disclosure relates to an air circulator, the air circulator, including: a suction grill part provided with a passage through which air is suctioned; a discharge guide coupled to the suction grill part, and configured to guide discharge of air suctioned through the suction grill part; a motor connected to the discharge guide and configured to supply a rotational power; and a mixed flow fan connected to the motor, rotatably installed in an inner space between the suction grill part and the discharge guide, and configured to discharge air, suctioned through the suction grill part, through the discharge guide upward at a slant.

A vehicle airflow system includes a centrifugal fan and an air diffuser. The centrifugal fan is configured to direct air radially outward from a rotational axis of the fan. The air diffuser has a plurality of air deflectors that are disposed radially about the fan. The air deflectors have curved surfaces. Each curved surface defines an airflow channel that has an inlet extending radially outward from a periphery of the centrifugal fan and an outlet extending axially away from the diffuser relative to the rotational axis of the fan.

An exhaust motor of vacuum device comprises an electric motor comprising a motor casing and a drive shaft, and an air bucket connected to the electric motor. The air bucket defines an air inlet side and an air outlet side, at least one rotating fan driven by the drive shaft to generate a high-pressure airflow flowing from the air inlet side to the air outlet side is provided in the air bucket. The air bucket is provided with a diversion end plate forming a plurality of diversion passages, each of the diversion passages comprises an inlet and an outlet, and the inlet is located on an original output path of the high-pressure airflow. The diversion passages divert the high-pressure airflow to flow toward the motor casing, and turn the high-pressure airflow into a heat-dissipating airflow capable of exchanging heat with the motor casing.

The self-ventilated motor (10) comprises a casing (12) having an air inlet opening (18) and an air outlet opening (20) and delimiting an air passage between the air inlet opening (18) and the air outlet opening (20), drive means (13) comprising a shaft (22) housed in the casing (12), a ventilation propeller (24) connected to the shaft (22) upon rotation and housed in the air passage, and a noise reduction device (26). The noise reduction device (26) comprises a first noise reduction member (28), attached to the casing (12) at the air inlet opening (18), a second noise reduction member (30) arranged on the ventilation propeller (24), and a third noise reduction member (32) fixed to the casing (12) at the air outlet opening (20).

A bladed wheel of a blower device has a main plate, a side plate and multiple fan blades between the main plate and the side plate. A fan casing of the blower device has a bell mouth portion and a guide wall portion, which extends in a radial-outward direction from an axial rear-side end of the bell mouth portion to an outer periphery of the side plate. An air reflecting space is formed in the fan casing at a radial-outside position of the guide wall portion and at an axial front-side position of the fan casing between an axial rear-side end of the guide wall portion and an axial front-end wall portion of the fan casing. Air blown out from the bladed wheel flows through an air blow-out passage, wherein sound wave of the air from the bladed wheel and sound wave of the air from the air reflecting space interfere with each other so that noise is decreased.

Disclosed is a fan motor. The present disclosure provides a fan motor including a motor housing receiving a motor therein, a motor bracket disposed on the motor housing, an impeller coupled to a shaft of the motor, and a diffuser disposed between the motor and the impeller and having a vane body, an axial flow vane provided to an inner circumference of the vane body, and a diagonal flow vane provided above the axial flow vane.