Abstract: A blower assembly includes a centrifugal fan and a motor assembly. The centrifugal fan has a plurality of axially extending impeller blades, a first axial end, and an air inlet. The air inlet is at the first axial end of the centrifugal fan. The motor assembly comprises a stator, a rotor, and an air directing surface. The air directing surface is shaped and configured to direct air drawn into the air inlet radially outwardly toward the impeller blades. The air directing surface extends generally along the rotor axis from its first end to its second end. At least a surface region of the air directing surface generally circumscribes the rotor axis and diverges radially outwardly as such surface region of the air directing surface extends away from the first end toward the second end.

Abstract: A mounting apparatus for a fan includes a bracket, two fixing members, two screws, and a shield plate. The bracket includes a fixing plate defining a vent and two first through holes adjacent to opposite ends of a top of the vent. The screws extend through the fixing members and the first through holes of the bracket, in that order, for engaging in an upper portion of the fan arranged behind the fixing plate, with the vent aligning with the fan. A top of the shield plate is rotatably connected between the fixing members. The shield plate hangs vertically by gravity to cover the vent upon a condition that the gravity of the shield plate is not overcome by airflow passing through the vent.

Abstract: An integrated high-pressure compression unit for a process fluid that includes at least a first compression device able to compress the process fluid from a essentially gaseous initial thermodynamic state to an intermediate thermodynamic state, a second compression device connected mechanically to the first compression device and able to compress the process fluid from the intermediate thermodynamic state to a final thermodynamic state, a motor device able to drive the first compression device and the second compression device, and a pressure casing or housing in which at least the said first and second compression devices are mechanically coupled to each other.

Abstract: A cooling system includes a fixing device and a fan. The fixing device includes a fixing rack and a latching rack. The fixing rack includes a first latching arm and two opposite supporting arms protruding from two ends of the first latching arm. The latching rack includes a second latching arm and two opposite adjusting arms protruding from two ends of the second latching arm. The adjusting arms can be adjustably fixed to the supporting arms at different positions to adjust a distance between the first latching arms and the second latching arm to releasably fix the fan between the first latching arm and the second latching arm.

Abstract: A motor-driven compressor includes a housing, a rotary shaft, a compression mechanism and an electric motor. The housing includes a suction port and a discharge port. The compression mechanism is disposed in the housing and compresses refrigerant flowed through the suction port into the compression mechanism and discharges the refrigerant through the discharge port. The electric motor is disposed in the housing and drives the rotary shaft to rotate to drive the compression mechanism. The electric motor includes a rotor fixedly mounted on the rotary shaft and a stator fixed to the housing. The rotor includes a permanent magnet and a compressor interior environment improvement agent containing at least one of an absorbent for absorbing moisture and a neutralizer for neutralizing acid.

Abstract: An axial flow fan provided herein allows for a wide range of selection for placement of the fan and wiring of the lead wires.

Abstract: A centrifugal pump includes a pump unit and a drive unit. The pump unit includes a volute and an impeller disposed in the volute. The drive unit includes a stator and a rotor having a shaft. The volute includes an inlet, an outlet and a chamber in communication with the inlet and outlet. The shaft of the rotor extends into the chamber of the volute and the impeller is attached to and driven by the shaft. The volute further includes a transition part connected between the outlet and the chamber and communicating the outlet with the chamber. The axis of the transition part is angled to the axis of the outlet. The transition part is configured to improve the effect of fluid turbulence to thereby reduce noise, especially in the air-water stage.

Abstract: A nozzle for a fan assembly includes an air inlet, an air outlet, an interior passage for conveying air from the air inlet to the air outlet, an annular inner wall, and an outer wall extending about the inner wall. The interior passage is located between the inner wall and the outer wall. The inner wall at least partially defines a bore through which air from outside the nozzle is drawn by air emitted from the air outlet. A flow control port is located downstream from the air outlet. A flow control chamber is provided for conveying air to the flow control port. A control mechanism selectively inhibits a flow of air through the flow control port to deflect an air flow emitted from the air outlet.

Abstract: In a pump apparatus having a reduction chamber for reducing pulsation of a hydraulic fluid pressurized in a pump section on the way of a discharge channel having an opening in the outer surface of the housing of the pump section, a remaining fluid inflow prevention pipe having one end fitted into and fixed to the discharge channel between the outer surface and the reduction chamber and the other end positioned in the reduction chamber is provided, and a seal lip for fluid-tightly sealing the space between the inner wall of the discharge channel and the one end is provided on the outer circumference of the one end. The seal lip is formed in a shape tapered toward the discharge side. Further, the outside diameter of the other end of the remaining fluid inflow prevention pipe is made larger than the inside diameter of the discharge channel.

Abstract: Implementations of an enhanced axial air mover system address various issues such as drying performance, transportability, storage, use, and assembly. Some implementations include ergonomic positioning of a carrying handle relative to positioning of a fan-assembly to make the system easier to carry. Enclosures with variable diameter profiles increase air flow performance. A floor edge allows for flush positioning of the air mover's outlet to improve flow of air. Various supports and engagement members allow for horizontal and/or vertical engagement of a plurality of the air movers for storage or increased air moving capacity for a given application. An alignment guide assists with positioning of the air mover with respect to a room wall to enhance air flow within the room. A cord retaining system provides an enhanced approach for securing the air mover's electrical cord. Grill guards have slotted ends to assist with assembly of the air mover.

Abstract: A circulator includes a main body forming an air passage, an impeller, and a motor. The main body is cylindrical, in which a discharge port is formed at one end thereof, a suction port is formed at the other end thereof, and the air passage extending from the suction port to the discharge port is formed in the inside thereof. An orifice is provided annularly along an inner periphery of the air passage to locally narrow the air passage. An impeller is disposed in a part of the air passage having been narrowed by the orifice. A motor is connected to the impeller to rotate the impeller so that the air having been sucked from the suction port is blown from the discharge port.

Abstract: An electric pump has a stator, a rotor, a pump volute, and an endshield. The pump volute and the endshield are formed together as a single monolithic part, thereby minimizing the axial length of the electric pump. A drainage passageway is provided on the endshield to harmlessly drain away any fluid that seeps past the pump's seals. In one embodiment of the invention, the drainage passageway is a groove that faces the stator and is configured to facilitate the evaporation of and leak fluid by channeling the fluid near the stator, which warms the fluid and thereby increases the fluid's evaporation rate.

Abstract: A fan frame accommodates a fan for blowing air or cooling and has a hole into which a tapping screw is fixed. The hole has a first hole portion opened in an attachment surface onto which a supporting member fixed by the tapping screw is attached and a second hole portion extending from the first hole portion and having a predetermined inner diameter. The first hole portion of the hole is formed to have a diameter larger than that of the second hole portion.

Abstract: A campfire companion of the present invention is a self contained, aesthetically pleasing, potentially solar charged battery driven electric fan blower system that feeds air into the campfire. This campfire companion would essentially be a fan system, which includes an electric fan (electric motor connected to fan blades) with appropriate power source and controls), hidden in a naturally aesthetic enclosure, such as a composite material shaped to look like a natural rock, stack of wooden log(s), etc. This campfire companion would sit on the edge of the fire pit and expel air towards the fire to help ignite the fire and allow the fire to burn at a higher rate offering a more pleasing campfire and the ability to burn wood/charcoal in a sufficient manner for a pleasant campfire or cooking experience.

Abstract: A fan assembly including a rotation shaft, a permanent magnet having a receiving space therein and rotatable around a central axis of the rotation shaft, a fan including a hub having a receiving space therein with one side open and disposed outside the permanent magnet, the fan being rotatable around the central axis of the rotation shaft, a stator disposed inside the permanent magnet, and a blocking portion disposed at the open side of the hub in an axial direction, the combination configured to block an introduction of foreign materials into the fan assembly and to reduce the size of the fan assembly.

Abstract: Some embodiments of an apparatus and system are described for a volumetric resistance blower. An apparatus may comprise a motor, a rotor comprising a cylindrical foam block, and a casing having one or more inlets arranged in an axial direction of the rotor and one or more outlets arranged in a radial direction of the rotor. Other embodiments are described.

Abstract: A blower fan includes a rotor arranged to rotate about a rotation axis together with a shaft, a stator arranged radially outward of the rotor and opposite the rotor, a motor support portion arranged to support the shaft through a bearing such that the shaft is rotatable, and an impeller arranged to rotate together with the shaft. The motor support portion includes a base portion, a bearing support portion arranged to support the bearing, and a stator support portion arranged to support the stator. Each of at least a portion of the bearing support portion which is in contact with the bearing and at least a portion of the stator support portion which is in contact with the stator is defined by a metallic member coupled to the base portion, which is made of a resin, preferably through, for example, insert molding.

Abstract: A pump assembly with an electric motor includes a stator having an iron core (16) and windings arranged thereon and being arranged in a stator housing surrounding the electric motor to the outside. The stator housing (6) is formed as a cast component, into which the iron core (16) is cast, and the windings have been deposited on the iron core (16) after the casting of the iron core (16) into the stator housing (6).

Abstract: An electric water pump apparatus may include a body, a stator disposed in the body, a rotor in the stator, a pump cover having an inlet and an outlet, wherein a front surface of the body and the pump cover form a volute chamber, wherein a stator chamber is formed at an outer portion in the body in a radial direction and the stator is mounted in the stator chamber, and wherein a rotor chamber is formed at an inner portion in the body and the rotor is mounted in the rotor chamber, a shaft rotatably coupled to the front surface and fixed into the rotor, and an impeller fixed to a front portion of the shaft, wherein the shaft includes a first shaft connecting the impeller and a front end portion of the rotor and a second shaft connected to a rear end portion of the rotor along the central axis of the shaft.

Abstract: A series-connected motor unit includes a first motor, a second motor and a separation member. The first motor has a first circuit board, and the second motor has a second circuit board. The separation member has a first face and a second face opposite to the first face. The first face abuts against the first circuit board, and the second face abuts against the second circuit board.

Abstract: A brake actuator has a motor that provides input rotation in first and second directions. A reducer couples to the motor and reduces the input rotation into an output rotation to be applied to a brake screw of a progressive cavity pump drive. A sensor measures rotational speed of the drive shaft. In manual operation, an operator can view an indication of the rotational speed and can manually operate the motor accordingly to control rotation of the shaft. In automated operation, a controller automatically controls the motor based on the rotational speed measured by the sensor. The controller can also use a torque sensor to detect the torque applied to the brake screw, a displacement sensor to detect displacement of the brake screw, and/or a current sensor to detect the current consumption of the motor.

Abstract: A pump motor assembly operable to provide driving power to a fluid pump includes a rotor, a stator, a case housing the rotor and the stator, and a control assembly mounted to the case and operable to control motor operation. The control assembly includes an information display and a cover overlying the display, with a window section in general alignment with the display. The control assembly also includes a filler plate underlying the window section to prevent any air gap along an underside thereof, allowing the display to be visible while reducing the risk of condensation buildup. The control assembly further includes a low voltage housing with the display disposed in a first compartment defined thereby, and a high voltage housing with a high voltage component disposed in a second compartment defined thereby.

Abstract: A fan apparatus is provided and includes: a housing having a hollow cylindrical shape; a circuit board holding structure which is disposed in the housing so as to be located at the radially central part of the housing and which includes a plurality of slits extending axially; a circuit board disposed inside the circuit board holding structure in parallel with the axial direction; a plurality of fixed blades disposed so as to bridge between the housing and the circuit board holding structure; and a motor which includes a rotary shaft and an impeller and which is disposed at the front end of the circuit board holding structure, wherein the impeller is connected to the rotary shaft so as to move air.

Abstract: A fan self-cooling structure with heat pipe includes a stator assembly, a fan circuit board, and at least one heat pipe. The fan circuit board is flatly connected to a bottom end of the stator assembly and has at least one heat-producing electronic element provided thereon. The at least one heat pipe is provided on the fan circuit board for absorbing and transferring heat energy produced by the at least one electronic element. With these arrangements, it is able to lower the temperature of the electronic elements in a fan and enhance the characteristics of the fan.

Abstract: A bladeless air fan includes a host and an airflow guiding frame. The host divides into a housing section to hold an airflow generator and a pivoting section to include two first pivoting portions. The airflow generator is connected to an airflow guiding manifold extended from the housing section to the pivoting section. The airflow guiding frame includes an air discharging portion and an airflow guiding passage and two second pivoting portions being annular to form two air intake ports communicating with the airflow guiding passage. The second pivoting portions are rotatably coupled with the first pivoting portions such that the airflow guiding passage communicates with the airflow guiding manifold. The air discharging portion encircles an airflow passage being formed at an inner diameter allowing the housing section to pass through to enlarge the range of the second pivoting portions rotating against the first pivoting portions.

Abstract: A centrifugal fan includes an impeller arranged to rotate about a rotation axis, a motor arranged to rotate the impeller, and a case arranged to accommodate the impeller and the motor. The case includes an upper case, a lower case, and a joint portion at which the upper and lower cases are fixed to each other. An interior of the case includes a first annular space positioned radially outward of the motor. The first annular space includes a second annular space defined by a portion of a space defined by an annularly continuous collection of imaginary circles each of whose diameter is the shortest distance between an inner circumferential edge of the joint portion and a radially outermost circumferential portion of a motor accommodating portion and each of which touches the inner circumferential edge of the joint portion.

Abstract: In a fan, a housing includes decreased thickness portions and increased thickness portions arranged alternately in a circumferential direction. A distance between a central axis and an edge increases from an air inlet toward an air outlet. An inner circumferential surface has a minimum radius smaller than a distance between the central axis and an outermost portion of the edge. At a boundary between upper and lower housing portions of the housing, the inner circumferential surface has a radius greater than the distance between the central axis and the outermost portion of the edge. The increased thickness portions include component fastening structures defining a fastening structure arranged to fit the upper and lower housing portions to each other.

Abstract: A motor includes a base, a stator, a rotor, a circuit board and a heat-conducting insulator. The base includes a cooling plate. The stator is coupled to the base. The rotor is rotatably coupled to the base and aligned with the stator. The circuit board is received in the base and electrically connected to the stator. The heat-conducting insulator is disposed between the cooling plate and the circuit board, and abuts with the cooling plate and one face of the circuit board.

Abstract: An electric blower includes a stator, a rotor, a bracket, rotary fan, air guide, a fan case covering air guide and rotary fan. Air guide includes a partition plate, a diffuser, a partition slope, and a guide vane. Diffuser vanes configure closed passages. Passage lengths of closed passages include a first passage length and a second passage length that is different from the first passage length.

Abstract: A technique is provided for pumping fluid in subsea applications. A self-contained pumping module is created by mounting one or more removable pumping units on a skid that can be lowered to a sea floor. Each removable pumping unit comprises an electric submersible pumping system enclosed by an outer housing. The self-contained pumping module also comprises hydraulic connectors and electrical connectors that facilitate connection with corresponding hydraulic lines and electric lines while at a subsea location.

Abstract: A pump (1) is disclosed, the pump (1) comprising a shaft (21) for driving an impeller (81) in a pump chamber (80); an electrical motor chamber (60) extending essentially circumferentially around a motor section of the shaft (21); a cooling circuit chamber (30) for being filled with a cooling liquid; and a mechanical seal chamber (40) extending essentially circumferentially around a seal section of the shaft (21), with the mechanical seal chamber (40) adapted for being filled with oil. The pump (1) may be a submersible pump.

Abstract: A heat dissipating fan includes a housing having a base and a sidewall coupled to the base. The sidewall defines a compartment. The housing includes an air inlet, an air outlet and a dust channel. The air outlet includes opposite first and second end edges located at a same straight side of the housing. The housing defines a first plane. The impeller includes a hub and several blades. The impeller defines a second plane. The compartment of the housing includes an air outlet section and a pressure accumulating section. The air outlet section is located between the first and second planes. The air outlet is located in the air outlet section. The dust channel extends in an angle with respect to the second plane. An impeller is coupled to the stator that is coupled to the base. A control element includes a driving circuit and a rotating direction control circuit.

Abstract: A blower for use to accelerate combustion by providing additional air to a fire (e.g., to assist in the lighting of a fire). The blower may include a cylindrical housing having an inlet opening and an outlet opening with a bore extending therebetween. A fan assembly and power source may be disposed in the bore and be operable to induce air flow through the bore. Air exiting the outlet opening may travel in a direction substantially parallel with a central axis of the cylindrical housing. The blower may be supported by an infinitely adjustable flexible member that may be manipulated to position the blower with respect to the fire to provide outlet air to the fire.

Abstract: An auto-stop air pump has a housing, a blower and an auto-stop device. The housing has an upper chamber, a lower chamber, a main inlet and an outlet. The upper chamber and the lower chamber communicate with each other. The main inlet and the outlet are formed through the housing respectively and communicate with the upper chamber. The blower is mounted in the housing and has a motor connected to a dual-sided impeller. The auto-stop device is mounted in the housing and has a shell, a film, a micro switch and an actuating unit. The film and the micro switch are mounted in the shell. The actuating unit is mounted movably through the shell. Owing to deformation of the film by pressure, the film presses the micro switch to close the micro switch so the air pump can stop working automatically.

Abstract: A washer pump apparatus having a washer fluid heating function, may include a housing having an inlet provided at a first end thereof to permit a washer fluid to flow thereinto, and an outlet provided at a second end thereof to permit the washer fluid to flow out therefrom, a heater unit disposed in the housing on a course extending from the inlet substantially to the outlet to heat the washer fluid passing through the heater unit, and having a hollow portion therein, a path member inserted into the hollow portion, and having on an inner circumference thereof a passage through which the washer fluid passes, an impeller unit provided in the housing and supplying the washer fluid from the inlet to the outlet, a check valve provided at a portion of the outlet, and being open when a discharge pressure of the washer fluid is a preset value or more, and a control unit selectively operating the impeller unit and the heater unit.

Abstract: A quick attach and safe release arrangement for a pump of the type in which a pump chamber has at least one chimney and at least one separable port locatable in the at least one chimney. The quick attach and safe release arrangement is provided with a cooperating retaining elements integrally formed with the at least one chimney and integrally formed with the at least one separable port respectively, for retaining the at least one separable port in within the at least one chimney. The at least one separable port and the at least one chimney are rotatable relative to one another and the cooperating retaining elements have a single port release position at a predetermined angular position of the at least one separable port relative to the at least one chimney.

Abstract: A blower for a downdraft cooktop that includes a blower housing, having a top portion and a bottom portion, which includes an inlet that can be fluidly coupled to a downdraft cooktop and an outlet for removing air from the blower housing, a fan located between the input and the outlet of the blower housing, a motor having a rotor with a shaft, having a top portion and a bottom portion, and a stator, wherein the bottom portion of the rotor is operatively attached to the fan, a rotatable member operative attached to the top portion of the rotor, and a motor housing enclosing the motor, having a top portion, a bottom portion, at least one inlet opening and at least one outlet opening, wherein air for cooling the motor is drawn through the motor housing without utilizing the air located within the blower housing.

Abstract: An adapter, containing at least an inlet portion, an outlet portion, and a transition portion. The inlet portion, the outlet portion and the transition portion are integrally formed, and the transition portion bends upwards whereby staggering the inlet portion and the outlet portion. The adapter is easy to assemble and disassemble, which makes it easy to connect the blower to an external equipment. Moreover, the adapter is integrally formed, features simple structure and is convenient to cast, all of which reduces time for production and mold opening, and thus decreases production cost.

Abstract: An constant temperature circulator for maintaining a liquid at a constant temperature including a housing that encapsulates a controller, a display, a heating element, a temperature sensor, and an electric motor having an impeller. The housing includes a first port and a second port that cooperatively define a chamber that encapsulates the impeller, an aperture and an opening, such that actuation of the impeller when the electric motor is activated by the controller moves the liquid from the aperture, through the chamber and to the opening.

Abstract: A fan unit for a heat exchanger, has a plate-like support structure or shroud with a main opening defining an air passage for ventilation of the heat exchanger. An electric drive motor is fixed to the support structure or shroud. An impeller is arranged inside the main opening and driven by the drive motor. A spray protection screen associated with a side of the motor remote from the impeller is fixed to the support structure or shroud in such a way that, during use, it is substantially vertical and defines an inlet opening for an air flow for cooling the motor. The spray protection screen has an outwardly projecting deviating formation designed to deflect outside of the inlet opening, water which may flow over the outer surface of the screen during operation of the fan unit.

Abstract: A pump assembly includes a pump housing, a motor coupled to the pump housing being operated to drive fluid through the pump housing, and a control module operatively coupled to the motor. The control module has a power connector with power contacts, where the power connector has a plug interface. The pump assembly also includes first and second plug assemblies configured to be selectively coupled to the power connector. The first and second plug assemblies have first and second mating interfaces both configured to mate with the plug interface of the power connector. The first plug assembly includes a line cord having a pump plug at one end of the line cord and an outlet plug at an opposite end of the line cord. The second plug assembly includes a conduit box having plug contacts configured to be field wired to a power cable within the conduit box.

Abstract: An axial flow fan is provided that is arranged in a rotatable manner around an axis in a stationary shroud ring, with fan blades. The shroud ring has an essentially cylindrical annular surface with an axial extension from a leading edge to a trailing edge and the fan blades have an axial depth from an inflow edge to an outflow edge. The outflow edges of the fan blades in an axial direction project beyond the trailing edge of the annular surface and form a blade overhang and flow guidance elements are arranged radially outside the fan blades as well as in the axial region of the blade overhang.

Abstract: An air blower installed on a barbeque smoker, including: (a) a rotary air blowing fan having an air outlet, (b) an air blower body having a first end and a second end with an air passage inside the air blower body between the first end and the second end, (c) a front installation panel, (d) a torsion spring having two arms with a round ring on each of the two arms, (e) a torsion spring retention pin, and (f) a shutter. When the rotary air blowing fan is turned on, the rotary air blowing fan blows air into the air blower body, through the shutter. When the rotary air blowing fan is turned off, the shutter close the air passage by its gravity. The torsion spring can be in the shape of a “V” or a “V” with two arms bent inward so they are approximately parallel.

Abstract: An electric water pump with a canned motor is provided. The electric water pump includes a can-integrated volute body and a rotor support. The can-integrated volute body includes a volute body part disposed between a water power part housing and a motor housing and a can part disposed between a rotor and a stator. The volute body part separates a water power part from a driving motor and the can part separates the rotor from the stator. The volute body part and the can part may be integrally formed as one continuous piece and the rotor support is disposed inside the volute body part and rotatably supports the rotor and a motor shaft.

Abstract: A motor-compressor includes a compressor, an electric motor directly connected to the compressor, magnetic bearings and one gas support located adjacent to a magnetic bearing to seal and support an end of the compressor's rotor. The compressor and the electric motor are integrated in a single unit, being housed in a single box or casing.

Abstract: A blower assembly comprises a blower housing having a stator assembly integrally formed therewith. The stator assembly includes a stator bore having a rotor magnet rotatable therewithin such that the motor assembly is configured as a brushless D.C. motor. An impeller is mounted on a motor shaft of the motor assembly and has a plurality of vanes extending upwardly therefrom. Each one of the vanes has a vane height which is optimized to minimize the formation of fluid eddy losses during compression of air by the impeller. A bearing assembly rotatably coupling the rotor magnet to the stator assembly is sized and configured to maintain an air gap of approximately 0.0002 inches between the vanes and a housing interior surface of the blower housing during rotation of the impeller.

Abstract: A heat-dissipating fan includes a shaft seat. A coil base is coupled to the shaft seat. The coil base includes a base portion and a coil unit coupled to the base portion. The base portion includes a connection port electrically connected to the coil unit. The connection port is connected to a drive circuit. An impeller includes a hub and a permanent magnet. A shaft is coupled to the hub and rotatably coupled to the shaft seat about an axis. The permanent magnet is coupled to the hub and aligned with the coil unit. Since the coil base does not include electronic elements of the drive circuit, the axial height of the heat-dissipating fan is reduced, and the structure of the heat-dissipating fan is simplified.

Abstract: A DC motor includes a rotor, a cup-shaped stator, and a drive control unit. The cup-shaped stator includes a cylindrical winding portion surrounding the rotor. The cylindrical winding portion includes an inner periphery formed by at least one conductive wire and facing an outer periphery of a permanent magnet of the rotor with an air gap formed between the cylindrical winding portion and the rotor. A drive control unit is electrically connected to the cylindrical winding portion and a power source. The DC motor can be mounted in a compartment of a housing, and an impeller can be coupled to the shaft, forming a DC fan. The DC motor and the DC fan possess high control sensitivity and high control precision while having simplified structures to allow easy assembly.

Abstract: A heat dissipating fan includes a housing having an air inlet and an air outlet between which an air passageway is formed. A fixed seat is provided in the air passageway and includes first positioning holes. A magnetically conductive first casing includes a first outer wall, an extended wall extending radially outward from an end of the first outer wall and having second positioning holes aligned with the first positioning holes, and a first support on the other end of the first outer wall. A second casing is coupled to an inner periphery of the extended wall of the first casing. A motor mounted in the first and second casings includes a stator and a circuit board electrically connected to the stator.

Abstract: A washer fluid pump (2) for a window cleaning system includes two ventilation openings (13, 14) arranged in a housing (5) and linked with a single opening (15) arranged on the inside. A ventilation duct (18) has two sections (16, 17) arranged tangentially to the housing (5). The ventilation openings (13, 14) are separated from each other by a partition (19). This design makes it possible for the housing (5) to have a large ventilation cross section and avoids splashed water penetrating the housing (5).