A cabin air compressor assembly includes a cabin air compressor, and a cabin air compressor motor operably connected to the cabin air compressor. The cabin air compressor motor includes a rotor and a stator having a plurality of end windings. A cabin air compressor housing includes at least one cooling airflow hole formed therein. A motor cooling flow is movable across a portion of the cabin air compressor motor to cool the stator and the end windings. A duct extends from the cabin air compressor housing to an adjacent end winding such that a cooling outlet flow provided via the at least one cooling air flow hole is arranged in fluid communication with the end winding.

A fan assembly and associated methods are shown. Fan assemblies and methods include a fluid passage region defined between a fan motor and an outer housing. Example assemblies and methods include a number of hollow vanes located within the fluid passage region to permit an air flow between the fan motor and air external to the outer housing. In selected examples, fan motor cooling is facilitated using configurations described.

A fan motor includes a housing, a stator assembly disposed inside the housing, a rotor assembly rotatably disposed inside the stator assembly, an impeller configured to generate a flow of air in the housing based on receiving power from the rotor assembly, a first housing cover disposed at one side of the housing, a first bearing disposed in the first housing cover, a second housing cover disposed at another side of the housing and configured to guide the air along an axial direction of the impeller, a second bearing disposed in the second housing cover, and a vane disposed at a lower portion of the second housing cover and configured to guide the air in the second housing cover. The impeller is a diagonal flow impeller, and the second housing cover is arranged along the axial direction.

A fluid transfer pump assembly that includes a motor enclosure assembly that forms a motor cavity sized to receive a motor. The motor enclosure includes a flame path that extends from an interior joint to an exterior joint. The interior joint faces the motor cavity and the exterior joint faces exterior of the motor enclosure assembly. A heat sink is located in the motor cavity of the motor enclosure assembly. A portion of the heat sink abuts the interior joint.

An electric and hydraulic machine includes a housing defining a motor chamber and a pump chamber, a motor comprising a rotor and a stator positioned within the motor chamber, and a pump comprising a pumping element positioned within the pump chamber, the pumping element movable by the motor to displace fluid in the pump chamber. The pump chamber includes a low-pressure chamber and a high-pressure chamber, a unit inlet defined by the housing and in communication with the low-pressure chamber, and a unit outlet defined by the housing and in communication with the high-pressure chamber. The pump chamber is positioned radially inward of the motor chamber such that the pump is nested within the motor. A radial cooling channel extends in a radial direction from the low-pressure chamber to the motor chamber such that fluid in the pump chamber communicates with the rotor and the stator to cool the motor.

The disclosure provides a backpack blower, a backpack assembly and a backpack power assembly. The backpack blower includes a backpack assembly and a blower body. The backpack assembly is used for an operator to carry and comprises a battery pack cavity to house a battery pack. The blower body is mounted on the backpack assembly. The battery pack supplies power to the blower body. The blower body includes a motor duct assembly, an air inlet assembly assembled and fixed with the backpack assembly, and an air outlet assembly connected with the air inlet assembly. The air inlet assembly includes an air inlet and an air inlet tube connected to the air inlet. The air inlet tube is connected with the air outlet assembly. The motor duct assembly is housed in the air outlet assembly.

A centrifugal compressor includes a rotary shaft of a compressor impeller, a gas bearing structure that supports the rotary shaft, a motor that rotates the rotary shaft, a motor housing that houses the motor, a compressor housing that houses the compressor impeller and includes an intake port and a discharge port, a gas bleed port that is provided closer to the discharge port than the compressor impeller in a flow direction in the compressor housing, a bearing cooling line that connects the gas bleed port to the gas bearing structure, and a heat exchanger that is disposed on the bearing cooling line. The heat exchanger is mounted on at least one of the motor housing and the compressor housing.

A radial fan (1) or centrifugal blower is provided having a fan housing (2) with a spiral pressure chamber (D) and a rotor assembly (10) comprising an internally axially open bearing tube (20), in which a shaft (40) carrying a fan wheel (30) is mounted with a rotor (50) of a canned motor. An air-guiding channel (L) between a first pressure-chamber region (2a) and a second pressure-chamber region (2b) of the spiral pressure chamber (D) is formed between the bearing tube (20) and the wall (W) of the canned motor, so that an air flow flows through the air-guiding channel (L) from one pressure-chamber region (2a, 2b) to the other and in the process dissipates heat from the bearing tube (20) into the pressure chamber (D).

A high-speed dual turbo machine enabling cooling thermal equilibrium. The high-speed dual turbo machine maximizing the cooling efficiency thereof by compressing and discharging external air suctioned therein at both ends, cooling an air compressor in a suction air-cooling method, decreasing a flow path of air for cooling the inside of the dual turbo machine and the air compressor, and optimizing the flow path. Accordingly, the present invention uses the suction air-cooling method and guides the flow of air for cooling the turbo machine through a specific path, so that it 15 maximizes the efficiency and durability of the turbo machine, the cost reduction owing to the structural simplification of the turbo machine, and the easiness of maintenance by preventing an increase in temperature of the inside of the turbomachine casing (100) and the air compressor (200).

Aircraft and aircraft blower systems are described. The blower systems include a shaft, a motor having a stator and a rotor, the rotor being operably coupled to the shaft, a fan operably coupled to the shaft and configured to be driven by rotation of the shaft, one or more bearings arranged along the shaft, and a high pressure cooling source configured to supply high pressure air to the one or more bearings.