A motor assembly comprises a stator, a rotor configured to be rotated about a shaft by electromagnetically interacting with the stator, an impeller configured to be rotated with the rotor about the shaft by being coupled to the rotor and configured to suction air in response to a rotation, a housing configured to cover between the impeller and the stator by being coupled to the stator, a cover comprising an inlet through which air sucked by the impeller is introduced, and configured to cover the impeller, a guide member configured to guide the air discharged from the impeller and configured to be coupled to the housing, and a plurality of first vanes protruding from one of the cover and the guide member to an axial direction and coupled to the other of the cover and the guide member. The cover and the guide member are configured to be movable in the axial direction in response to not being coupled to the housing, and the cover comprises a contact portion in contact with the impeller according to a position of the cover. The contact portion is spaced apart from the impeller in response to coupling between the guide member and the housing.

This disclosure relates to a light-emitting fan includes a fan frame, an impeller, and a light-emitting component. The fan frame includes a base, a first ring, and a second ring. The first ring is disposed on the base. The second ring is disposed on the first ring. The first ring is located between the base and the second ring, and the first ring and the second ring together form an accommodating space. The impeller is located in the accommodating space and rotatably disposed on the base. The light-emitting component is located in the first ring or the second ring. One of the first ring and the second ring is made of light-permeable plastic, the other one is made of light-impermeable plastic, and light from the light-emitting component is emitted through the first or second ring.

The present invention is directed to a portable fan for the use in firefighting and other ventilation use-cases. The portable fan provides firefighters the ability to provide positive pressure ventilation in use for fighting fires which does not require power cables or combustible fuel powered motors, and provides increased portability, reduced risk, and reduced deployment time associated with managing and fighting a fire.

A double suction impeller is disclosed. In at least one embodiment, the impeller is configured for centrifugal pumps and hydraulic power recovery turbines. The impeller's flow-path arrangement comprises inter-blade channels, intersecting each other at the impeller's outer diameter and defining a variable cross section shape, so that the equivalent number of blades is at least doubled with respect to a conventional configuration obtained by the coupling of two single suction impellers and an improved control over the velocity of the flow within the inter-blade channels is achieved.

A height-adjustable fan fixing structure and a height adjustment method are provided. The height-adjustable fan fixing structure includes a fan box rear cover and a fan box front cover, the fan box rear cover and the fan box front cover cooperating to fix a fan; and further includes a height adjustment block, the height adjustment block being adjustably mounted on a whole piece formed by connection of the fan box rear cover and the fan box front cover, the lower end of the two side surfaces of the height adjustment block being provided with trunkings, each of the trunkings being provided with a rotatable wire screw, positions, corresponding to the two ends of each wire screw, on the fan box rear cover and the fan box front cover being provided with clamping holes, the two ends of the wire screw being inserted into the clamping holes.

A vertical electric pump for moving a liquid, comprising a containment jacket which encloses inside it: a mechanical section, which comprises an intake port and a delivery port, the mechanical section containing an assembly for the movement of the liquid which comprises one or more impellers, spaced out by diffusers and keyed on a driving shaft, an electromechanical section, comprising an electric motor, which in turn comprises a rotor and a stator that surrounds the rotor, the rotor being keyed on the driving shaft, the electric pump comprising a set of instruments for the control and monitoring of its operation.

The set of instruments for the control and monitoring of the operation of the electric pump is accessible entirely from a single side of the electric pump.

An electric pump for moving a liquid, comprising a containment jacket which encloses: a mechanical section, which comprises an assembly for moving the liquid which comprises one or more impellers, interleaved by diffusers, keyed on a driving shaft, an electromechanical section, comprising an electric motor, contained in a shell and comprising in turn a rotor and a stator that surrounds the rotor, the rotor being keyed on the driving shaft, the electric pump comprising, at the ends of the jacket, a first cover and a second cover, the second cover having an intake port and a delivery port which are fluidically connected to the mechanical section.

The jacket is provided monolithically.

The present invention refers to a progressive cavity pump developed for tintometric dosing machines. The proposal set out in the present invention is to make precision dosages through pumping by just one stator and rotor stage. The PCP proposal enhances the traditional constructive arrangement for tintometric application. The object makes precision dosages through pumping by just one stator and rotor stage, reducing the length of the pump, facilitating the manufacture of its components and requiring less robustness of the transmission components and of the drive motor. Therefore, the present invention has a simplified transmission system, uses special geometry for fastening the stator, optimizes the bearing of the drive shaft and its sealing element, reduces the dimensions of the components and uses a low torque motor.

A blower may include a lower case having a suction port and a fan and an upper case having at least one main discharge port and at least one auxiliary discharge port. The auxiliary discharge port may be positioned in front of and below the main discharge port to discharge air introduced through the suction port upward. A door may open and/or close the auxiliary discharge port, and a door motor may power the door. The upper case may be formed as two towers defining a blowing space therebetween, and the at least one auxiliary discharge port may include a plurality of auxiliary discharge ports formed in inner walls of the two towers to face each other.

A blower is provided that may include a fan that creates airflow; a lower body forming an inner space in which the fan may be installed, and having at least one suction hole through which air passes; an upper body positioned above the lower body and including a first upper body forming a first inner space that communicates with the inner space of the lower body, and a second upper body forming a second inner space that communicates with the inner space of the lower body and spaced apart from the first upper body; a space formed between the first upper body and the second upper body and opened in a frontward-rearward direction; a first opening formed through a first boundary surface of the first upper body facing the space; a second opening formed through a second boundary surface of the second upper body facing the space; and a door assembly including a first door installed at the first upper body and that opens and closes the first opening, and a second door installed at the second upper body and that opens and closes the second opening.