A fluid circulating assembly having a rotation axis is provided. The fluid circulating assembly includes a fan impeller including an inlet ring and a rear plate that together define a central fan chamber. The fluid circulating assembly also includes an electrical machine having a rotor assembly, a stator assembly, and at least one bearing assembly. The rotor assembly is coupled to the rear plate such that the electrical machine is located entirely outside the central fan chamber. The rotor assembly includes a hub portion having a radially inner wall that at least partially defines a central opening extending entirely through the electrical machine and oriented about the rotation axis such that the central opening does not include a shaft extending therethrough.

An inverter integrated gas supply device includes a fluid machine configured to discharge air, an electric motor having a motor casing and configured to drive the fluid machine, an inverter having an inverter casing and configured to supply a drive current to the electric motor, a motor-side connection part attached to the motor casing and configured to receive the drive current, and an inverter-side connection part attached to the inverter casing, connected to the motor-side connection part. The motor-side connection part includes a motor-side connector housing, and a motor connector. The inverter-side connection part includes an inverter-side connector housing, and an inverter connector. A position of the motor connector relative to the motor-side connector housing is fixed; and a position of the inverter connector relative to the inverter-side connector housing is variable.

A vacuum pump, and a waterproof structure and a control apparatus applied to the vacuum pump which improve efficiency of on-site maintenance work and prevent water from penetrating into a connector connecting portion when a cover is removed during circuit separation or the like. When performing maintenance work, after a chassis of a control apparatus is lowered by around several tens of millimeters, the chassis of the control apparatus is pulled out in a radial direction of a pump. Accordingly, a pump main body and the control apparatus can be readily attached and detached even when sufficient empty space is not available in an axial direction of the vacuum pump. A wall portion is circumferentially protrusively provided in side portions of the base portion and the control apparatus. Furthermore, a sealing member and a lid are inserted into a gap. Therefore, water droplets cannot easily penetrate into the gap.

A vacuum pump control apparatus may include a plurality of circuit boards including a first circuit board and a second circuit board which constitute a control circuit that controls a vacuum pump main body; a housing having an internal space in which the plurality of the circuit boards are arranged, in which an upper side of the housing is open; a heat radiating plate having a bottom surface portion to which the first circuit board is mounted so as to enable heat radiation and which is arranged on the housing so as to close the opening of the housing; and a board fixing means which fixes the second circuit board to a board mounting seat portion of the housing so as to enable heat radiation.

A side channel compressor for compressing a gas includes a housing, in which a side channel is arranged, which can be supplied with gas via a feed channel formed within the housing for feeding gas to the side channel and a discharge channel formed within the housing for discharging gas out of the side channel, wherein in the housing an impeller drive is arranged, wherein the side channel compressor includes a drive control for regulating and/or controlling the impeller drive. The impeller drive includes an impeller which on the output side engages in the side channel of the housing in order to drivingly interact with a gas. The side channel is designed for redirecting the gas flowing through the side channel by at least 270°. The drive control includes an integrated pressure sensor for measuring a gas pressure of the gas flowing within the side channel.

The portable ceiling fan is a fan that removably attaches to a ceiling. The portable ceiling fan magnetically attaches to the ceiling. The portable ceiling fan is independently powered. By independently powered is meant that the portable ceiling fan can operate without a direct connection to an external power source. The portable ceiling fan comprises a ceiling fan, a mounting plate, and a control system. The mounting plate attaches to the ceiling with an adhesive. The mounting plate magnetically attaches to the ceiling fan such that the mounting plate attaches the ceiling fan to the ceiling. The control system remotely controls the ceiling fan such that the ceiling fan can be turned on and off without requiring physical access to the ceiling fan.

A ceiling fan assembly having a motor with a rotor and a stator, at least one blade operably coupled to the stator, a motor shaft extending from the stator and having an internal wire passage and a wire opening in a side of the motor shaft, with the wire opening providing access to the internal wire passage, a control mounting plate having a motor shaft opening through which the motor shaft extends and an electronic control unit carried by a side of the control mounting plate.

A centrifugal compressor includes a compressor impeller, a motor, an inverter, a housing including a motor chamber and an inverter chamber, a conductive member, an insertion hole, and a resin member sealing the insertion hole. A pressure in the motor chamber is higher than that in the inverter chamber. The resin member includes a first resin portion fixed to the housing and a second resin portion which is covered with the first resin portion and which covers the conductive member, the second resin portion having a Young's modulus smaller than that of the first resin portion. The first resin portion and the second resin portion, and the second resin portion and the conductive member are coupled by insert-molding.

An air-flow channel structure of an air pump, a micro air pump, a waterproof air pump, and an inflatable product are provided. The air-flow channel structure of the air pump includes an air chamber. The air inlet of the air chamber communicates with an axial-direction air inlet of the centrifugal impeller arranged inside the air chamber. The air chamber is formed with an air-guiding wall inside that gradually expands in a spiral shape around an axis of the centrifugal impeller. An air-guiding channel is formed between the air-guiding wall and the centrifugal impeller. A tangent air outlet is provided at the tail end of the air-guiding channel. The micro air pump is configured with the air-flow channel structure of air pump. The waterproof air pump includes a waterproof exterior shell and the micro air pump removably connected to the waterproof exterior shell inside.

A variable speed pumping system coupled to a fluid circuit of an aquatic application is provided. The variable speed pumping system includes a pump having a motor, a variable speed drive in electrical communication with the motor, a pump housing designed to substantially enclose the motor and the variable speed drive, an onboard controller coupled to the variable speed drive, and an electrical communication assembly in communication with the onboard controller. The electrical communication assembly includes an IO expansion module. A plurality of pool pad devices is communicatively coupled to the onboard controller, and an external sensing device is communicatively coupled to the onboard controller. The onboard controller is configured to transmit instructions to control the plurality of pool pad devices, receive data from the external sensing device, and transmit the received data to one of a server or a remote user device.