Abstract: An exemplary heat dissipation fan includes a rotor and a stator. The rotor includes a hub, a central shaft extending down from a top end of the hub, the shaft having a free end far from the top end of the hub. A magnetic element attached to an inner periphery of the hub. The stator includes a stator core consisting layers of yokes, two insulation frames mounted at two opposite ends of the stator core and a coil wound around the insulation frames. An outer surface of the stator faces and is spaced from an inner surface of the magnetic element of the rotor with a clearance defined therebetween. A width of a bottom end of the clearance adjacent to the free end of the shaft being smaller than a width of a top end of the clearance.

Abstract: A cooling fan includes a fan housing, a stator and a rotor received in the fan housing. The rotor includes a shaft, a hub engaged with the shaft, a plurality of rotary blades extending outwardly from the hub, a connecting member and a magnet mounted in the connecting member. The hub includes a plurality of hooks. The connecting member has a flange clasping the hooks of the hub to mount the magnet in the hub.

Abstract: A male terminal is provided in a terminal hole formed in a flange unit. A female terminal and a grommet having a sealing portion to be fitted into the terminal hole are provided to a harness. A distance from an end of the sealing portion to a fore-end of the female terminal is set smaller than a distance from a fore-end of the male terminal to an opening of the terminal hole. With such setting, the grommet is retained in the terminal hole even if the female terminal is disconnected from the male terminal, thereby ensuring support of the female terminal. Moreover, a stopper is attached so as to cover the terminal hole to prevent the grommet from slipping out of the terminal hole.

Abstract: An electric submersible pump (ESP) assembly increases pump efficiency and pump head with a diffuser that includes a diffuser vane having a low pressure surface with a length greater than a length of a high pressure surface of the vane. The diffuser vane includes a leading edge at a downstream end of the vane and a trailing edge at an upstream end of the vane. The curved high pressure surface extends between the leading edge and the trailing edge. The curved low pressure surface extends between the leading edge and the trailing edge opposite the high pressure surface. The low pressure surface has a bump formed thereon to increase the length of the low pressure surface so that fluid flowing along the low pressure surface is substantially laminar, thereby increasing pump efficiency and pump head.

Abstract: A miniature fan, particularly an axial fan, has a space-conserving structure which permits sophisticated electronic control circuits within a limited amount of space. It features an electronically commutated motor (ECM) including an internal stator 68, an external rotor 27 on a shaft 62, and a fan wheel 28 mounted on the rotor and bearing fan blades 26. The motor flange 40? supports a bearing tube 60 which rotatably journals the rotor shaft 62 and is formed with a cavity 84 which receives a first circuit board 86 devoted to control of motor speed and/or voltage, and a second circuit board 96 which supports a galvanometric sensor 100 which senses the rotational position of the rotor, for purposes of triggering commutation of the motor stator windings 68 at appropriate times.

Abstract: A water inlet unit for an amphibious pump includes a housing having a connecting hole, a first water inlet pipe having a first end connected to the connecting hole and a second end provided with a first water inlet port, a second water inlet pipe having a first end connected to the connecting hole and a second end provided with a second water inlet port, a guide member mounted on the housing and connected to the connecting hole, and a tap detachably locked in the first water inlet port or the second water inlet port. Thus, the water inlet unit has a first water inlet port and a second water inlet port so that the water inlet unit and the amphibious pump are disposed at an upright or transverse state according to the practical space requirement.

Abstract: A fan (20) has: a motor having a stator (40) and having a rotor (60) with at least one fan blade; at least one air inlet having an air entrance opening (102) for the inlet of air; at least one air outlet having an air exit opening (32) for the outlet of air; a circuit board (80) having at least one recess, which circuit board (80) is arranged in the region of the air inlet in such a way that air can enter the fan (20) through the recess, motor electronics (88) being arranged on the circuit board (80). In a preferred embodiment, a Negative Temperature Coefficient (NTC) resistor (84) is surface-mounted on a PC board portion (83) extending into the air passage, to thereby sense air temperature. This facilitates compact, automated construction.

Abstract: A pump is disclosed which has a housing with a upper end and a lower end. A conduit is defined through the housing between the upper and the lower ends. The pump includes an impeller within the housing, an inlet from the conduit to the impeller and an outlet from the impeller. Portions of the impeller may be distributed around the conduit. The pump may also include a motor coupled to the impeller. Portions of motor may also be distributed around the conduit. The outlet from the impeller may be independent of the conduit.

Abstract: A control system for a fan includes a control housing that is external to a fan housing for the fan. At least one fan control module is within the control housing and communicates remotely with terminals within the fan housing via at least one wire. The at least one fan control module includes a detection module. The detection module detects induced voltages in at least one of a plurality of stator coils within the fan housing via the at least one wire without receiving signals from a sensor in the fan housing.

Abstract: An axial fan with an electric motor, on the rotor of which a an wheel is mounted, the rotor having a portion with a cylindrically pot-shaped configuration, onto which the wheel is pushed with a completely or partially cylindrical part so as to fit, and the fan wheel lying completely behind the plane predetermined by the bottom surface of the rotor.

Abstract: An electric fuel pump is disclosed which includes a pump portion, a motor portion, a housing, and a fuel passage. The pump portion pressurizes fuel. The motor portion drives the pump portion. The motor portion includes a rotor with a rotating shaft and a stator that surrounds an outer periphery of the rotor. The housing surrounds, at least, an outer periphery of the stator of the motor portion. The fuel passage, through which the fuel pressurized by the pump portion passes the motor portion, is made up of a clearance between the outer periphery of the stator of the motor portion and an inner periphery of the housing. The clearance extends, at least, in the axial direction of the rotating shaft of the rotor of the motor portion.

Abstract: The impeller of an electric blower includes a front shroud, a rear shroud, sheet-metal blades, a hub part, and an inducer having a plurality of blade parts. The inducer is configured to be divided into two parts: a first inducer composed of a first hub part and first blade parts; and a second inducer composed of a second hub part and second blade parts. The first inducer is disposed such that outer-peripheral blade-tips of the first blade parts are disposed in the proximity of the front shroud, and that the upper surface of the first hub part is proximally covered by the lower surface of a fastener.

Abstract: The invention relates to a blower (99), in particular for an engine cooling blower in a motor vehicle, comprising a N housing (10) having a cooling air guide device (200), wherein the housing (10) is designed for mounting a drive unit (102, 103) and the cooling air guide device (200) in the motor vehicle, and for guiding a cooling air flow (20, 30, 31, 32) to the drive unit (102, 103), wherein the cooling air guide device (200) is designed as one piece with the housing (10).

Abstract: A ceiling fan includes a motor for rotating multiple blades. This motor includes a hollow shaft that is disposed upright on the center of a disc-like stator, and a rotor around an outer periphery of the stator. The rotor integrally rotates with the blades. This motor further includes a cylindrical bearing housing, and a pair of ball bearings including an upper ball bearing and a lower ball bearing housed in this bearing housing. This bearing housing has a base in its center. The upper ball bearing is disposed over the base, and the lower ball bearing is disposed under the base in this bearing housing. Both bearings are fixed onto the hollow shaft.

Abstract: An arrangement for conveying fluids has a fluid pump (91) implemented in the manner of a centrifugal pump, having a pump wheel (90) that is connected to a first permanent magnet (92). The arrangement further has an electronically commutated internal-rotor motor (70) having a stator (68), inside which stator is rotatably arranged a rotor (60) that is in turn connected to a second permanent magnet (76; 140) that coacts with the first permanent magnet (92) in the manner of a magnetic coupling (93). The arrangement also has a partitioning can (52) that separates the first permanent magnet (92) of the magnetic coupling (93), which magnet is arranged inside said partitioning can (52), in fluid-tight fashion from the second permanent magnet (76; 140) arranged outside the partitioning can (52), the stator (68) of the internal-rotor motor (70) being arranged substantially in the same drive plane as the magnetic coupling (93) and radially outside the latter.

Abstract: A fluid pump may include an electric motor having an output shaft driven for rotation about an axis and a pump assembly coupled to the output shaft. The pump assembly has a first cap and a second cap with at least one pumping channel defined between the first and second caps, and an impeller between the first and second caps. The impeller is driven for rotation by the output shaft of the motor and includes a plurality of vanes in communication with the at least one pumping channel. Each vane has a root segment and a tip segment and a line from a base of the root segment to an outer edge of the tip segment trails a line extending from the axis of rotation to the base of the root segment by an angle of between 0° and 30° relative to the direction of rotation of the impeller.

Abstract: The present disclosure provides rotating impeller systems comprising a shaft with a plurality of blades attached to its inner wall. In motor applications, the shaft serves as the electrical and mechanical elements of a pump or vacuum system. In particular, the shaft rotates when energized, and the attached blades create a driving force. The rotating impeller systems of the present disclosure may be used in generator applications, where the shaft serves as the rotor and a housing serves as the stator. Generator applications include wind energy or hydroelectricity.

Abstract: The present invention relates to a photothermal source of fluid pumping device driven by self photovoltaic power, wherein a light projection space defined adjacent to a photothermal source device generating both optical and thermal power is provided with a photovoltaic (PV) device capable of converting the self optical power of the photothermal source device into the electric power, and a fluid pumping device driven by the electric power supplied by the photovoltaic device is provided for pumping a gaseous or liquid fluid, so that a part or all of the photothermal source device itself, a heat radiator installed on the photothermal source device and a thermal space heated by the photothermal source device can perform the operation of thermal energy transmission.

Abstract: A centrifugal pump including a motor connected to a volute housing. The volute housing is configured to receive a pumping mechanism that includes an impeller rotatably connected to the motor. The volute housing may also include a removeable cover that provides access to the interior of the volute housing and to components of the pumping mechanism. In one exemplary embodiment, the removeable cover is connected to the volute housing by fasteners, such as bolts. By removing the cover, the impeller, wear plate, and other components of the pumping mechanism may be disassembled and, if necessary, serviced, without the need to remove the motor from the volute housing. In another exemplary embodiment, a gasket having an integrated flapper valve is secured between the cover and the volute housing. The flapper valve is positioned to align with a fluid inlet formed in the cover and acts as a check valve, substantially preventing fluid within the volute housing from exiting through the inlet.

Abstract: An inflatable and deflatable air pump is provided. The inflatable and deflatable air pump includes a panel (11), a panel cover (12) matched with the panel (11), an air chamber (13) installed inside of the panel cover (12), a motor (14) connected with the air chamber (13), and a hollow cylindrical shifting switch (17). A plurality of air inlet-outlet holes (111) are formed on the panel (11), a vent valve (121) is disposed on the panel cover (12), an impeller (131) is disposed in the air chamber (13) and is connected thereto with a rotating shaft (141) of the motor (14), and two air chamber holes (1321, 1322) are formed on the air chamber (13).

Abstract: A fan assembly. The fan assembly includes a rotation shaft, a rotor coupled to the rotation shaft, a stator disposed inside the rotor, and a fan including a hub having a receiving space therein, and a plurality of blades disposed at a circumference of the hub, and coupled to the rotation shaft such that the rotor is spaced from an inner surface of the hub respectively in axial and radial directions, thereby preventing a transfer of vibration of a permanent magnet to the outside, and thus reducing the generation of noise due to the vibration.

Abstract: This patent discloses a fan capable of 360 degree continuous rotation. The fan may include an impeller positioned within the impeller housing, an impeller motor fixed to the impeller housing, where a control knob may control the impeller motor. The fan further may include an impeller shaft connected between the impeller and the impeller motor to rotate the impeller and the impeller housing may reside on a base. A contact ring may be positioned within the base. The impeller motor and the impeller housing may rotate relative to the contact ring, which may provide power to the impeller motor through brushes. A housing motor may be positioned within the base and be connected to the impeller motor to rotate the impeller motor. A housing motor switch may control the housing motor.

Abstract: A centrifugal compressor assembly for compressing refrigerant in a 250-ton capacity or larger chiller system comprising a motor, preferably a compact, high energy density motor or permanent magnet motor, for driving a shaft at a range of sustained operating speeds under the control of a variable speed drive. Another embodiment of the centrifugal compressor assembly comprises a mixed flow impeller and a vaneless diffuser sized such that a final stage compressor operates with an optimal specific speed range for targeted combinations of head and capacity, while a non-final stage compressor operates above the optimum specific speed of the final stage compressor. Another embodiment of the centrifugal compressor assembly comprises an integrated inlet flow conditioning assembly to condition flow of refrigerant into an impeller to achieve a target approximately constant angle swirl distribution with minimal guide vane turning.

Abstract: An exemplary embodiment of an air blower includes an electrically powered motor including a motor housing. A blower housing has first and second housing structures, each having inwardly facing, spaced ribs, and configured to surround the motor assembly in an assembled configuration. The ribs on the first and second housing structures register the radial and axial position of the motor housing inside the housing.

Abstract: A fuel pump includes a case member defining a fuel passage and a discharge-side cover connected to the case member and defining an outlet port. A pump section has an inlet port and is connected to the case member. A motor section is housed in the case member for driving the pump section. A positive electrode terminal and a negative electrode terminal are supported by an insulative terminal support member fixed to the discharge-side cover. Base portions of the positive and negative electrode terminals are covered by insulative portions. The insulative portions are fitted in fitting holes of the discharge-side cover. The discharge-side cover has guide portions on its inner surface. The terminal support member has engagement projections on opposite side walls thereof. The engagement projections are guided by the guide portions to restrict the discharge-side cover from rotating with respect to the terminal support member.

Abstract: A pump gear includes a pump gear body having involute teeth that each have an involute surface that extends between a tooth tip and a tooth base. The involute surface includes at least reference points A-D, with reference point A near the base, reference point D near the tip, reference point B between reference points A and D, and reference point C between reference points B and D. The reference points A-D have associated respective roll angles, ?A-D, between a corresponding first line that is perpendicular to the involute surface at the given reference point A-D, and a second line that is tangent at a reference point that lies on a terminal end of the involute surface at the tooth base to a reference base circle having a center origin at the center axis.

Abstract: A fan with concealed 360-degree oscillating mechanism includes a main housing; a pivot member vertically, pivotally and turnably mounted in the housing; a first driving motor having a forward first rotary shaft and horizontally, pivotally and turnably mounted in the pivot member; an oscillating mechanism assembled between the first driving motor and a rear end face of the main housing, and having a first end driving an opposing second end to rotate eccentrically; and a set of blades fixedly connected to the first rotary shaft to locate in front of the main housing. With the first driving motor pivotally connected to the pivot member and eccentrically connected to the oscillating mechanism, the set of blades can be oscillated 360 degrees while being rotated by the first driving motor; and parts inside the main housing undertake force evenly to enable stable operation of the fan and reduced stress fatigue of the oscillating mechanism.

Abstract: Various “contactless” bearing mechanisms including hydrodynamic and magnetic bearings are provided for a rotary pump as alternatives to mechanical contact bearings. In one embodiment, a pump apparatus includes a pump housing defining a pumping chamber. The housing has a spindle extending into the pumping chamber. A spindle magnet assembly includes first and second magnets disposed within the spindle. The first and second magnets are arranged proximate each other with their respective magnetic vectors opposing each other. The lack of mechanical contact bearings enables longer life pump operation and less damage to working fluids such as blood.

Abstract: A pump assembly including a pumping element mounted for rotation within a pump chamber, movement of the pumping element in the chamber causing pumping of fluid within the pump chamber, and a motor, the motor including a stator and a rotor which is connected to the pumping element such that activation of the motor causes movement of the pumping element and hence pumping of fluid within the pump chamber, there being a sealing assembly which permits fluid in the pumping chamber to flow around the rotor but which substantially prevents fluid from the pumping chamber from contacting the stator, the sealing assembly including a partition part which lies between the stator and the pumping chamber and a sealing part which lies between the stator and the rotor, wherein the sealing part is made from a polymeric material over-molded onto the partition part.

Abstract: A hydrogen recirculation blower for a fuel cell vehicle includes an ejector integrated with a housing of the blower. An integrated hydrogen recirculation blower for a fuel cell vehicle includes: a blower housing including an inlet and an outlet formed on a top surface thereof; an impeller rotatably installed inside the blower housing; a motor connected to a rear end of the impeller to rotate the impeller; and an ejector formed integrally on a upper surface of the blower housing.

Abstract: A rotor yoke includes a substantially flat or annular flat cover portion coaxial or substantially coaxial with a rotational axis and a substantially cylindrical side wall portion extending from an outer circumference of the cover portion in a parallel or substantially parallel relationship with the rotational axis. The rotor yoke further includes a substantially annular flange portion extending radially outwards from an open end of the side wall portion. The cover portion and the side wall portion define a cup portion whose center of gravity deviates from the rotational axis in a plane perpendicular or substantially perpendicular to the rotational axis, and the flange portion has an outer circumferential circle whose center deviates from the rotational axis in a direction opposite to the deviation direction of the center of gravity of the cup portion.

Abstract: An oil-free turbo vacuum pump is capable of evacuating gas in a chamber from atmospheric pressure to high vacuum. The turbo vacuum pump includes a pumping section having rotor blades and stator blades which are disposed alternately in a casing, a main shaft for supporting the rotor blades, and a bearing and motor section having a motor for rotating the main shaft and a bearing mechanism for supporting the main shaft rotatably. A gas bearing is used as a bearing for supporting the main shaft in a thrust direction, spiral grooves are formed in both surfaces of a stationary part of the gas bearing, and the stationary part having the spiral grooves is placed between an upper rotating part and a lower rotating part which are fixed to the main shaft.

Abstract: A pump has a body and a pressurizing barrel. The body has an outlet tube and a magnetic check valve mounted in the outlet tube to prevent a back-flow current from damaging an impeller mounted inside the body. When closed, the magnetic check valve actuates a magnetic switch to signal external devices. The pressurizing barrel has a tank containing liquid for compensating a pressure in the body and a casing. The casing is externally mounted on the pressurizing barrel, defines a notch for receiving a circuit board and has a detachable cap to facilitate maintenance of the circuit board. Accordingly, the pump effectively prevents impeller and motor damage due to the back-flow current. Moreover, the casing facilitates maintenance of the circuit board.

Abstract: A fan has a fan frame for accommodating a first circuit board and a second circuit board. A fan frame includes a housing, a base, and at least one supporting element. The base is disposed in the housing, and the base includes a bottom portion and a tube portion, which is connected to and extended from the bottom portion. The supporting element is connected between the housing and the base. There is a predetermined distance between the bottom portion of the base and an end of the housing so as to form an accommodating space, the first circuit board is disposed on the base and is located on a first side of the bottom portion facing the tube portion, and the second circuit board is disposed in the accommodating space which is located on a second side of the bottom portion facing away from the tube portion.

Abstract: An electric motor includes a stator portion, a rotor portion, and a bearing mechanism, wherein the rotor portion includes a rotor holder having a substantially cylindrical shape with a closed end, and a field magnet fixed to an inner circumference of the rotor holder; the stator portion includes a stator, a base portion to which the stator is fixed, and a magnetic member; and the magnetic member includes a cylindrical portion having a substantially cylindrical shape into which a lower end portion of an insulator of the stator is inserted, the lower end portion being a portion of an outer portion of the insulator and opposing the base portion, and a flat portion having a substantially annular shape which spreads outwardly in a radial direction from a lower edge of the cylindrical portion and opposes a lower edge of the field magnet.

Abstract: An electric motor (1) having a coaxially associated pump (6) for a coolant circuit, in particular in a system with temperature transfer and/or heat transfer, in which a shaft assembly (5) transmits a torque from the electric motor (1) to at least one impeller (8) arranged in the pump housing (7) within housing parts (7, 10) in the form of a hermetically sealed pressure enclosure, and a flywheel (12) is arranged between the electric motor (1) and the pump housing (7). All of the rotating parts are arranged within a hermetically sealed motor/pump unit, and the motor/pump unit is filled with fluid. The flywheel (12) comprises a flywheel body (13) made from a high-strength material having a large number of cavities (16, 17) with inserts (16, 17) formed of or containing a heavy metal having a density greater than 11.0 kg/dm3arranged in the cavities.

Abstract: An impeller for use in conjunction with a percutaneously-insertable blood pump or other rotatable equipment includes a blade that is segmented into a plurality of overlapping or abutting bladelets. In some embodiments, the bladelets are foldable and one side of each bladelet is concave.

Abstract: A pump assembly constructed to allow unloaded starting of the pump. The assembly includes a pump body, a permanent magnet rotor, a rotor shaft, a pump cover, a shaft sleeve and an impeller. The impeller includes a holding chamber for holding the shaft sleeve which is arranged proximate a center of the impeller. A stopping rib extends inwardly from an internal wall of the holding chamber of the impeller. The shaft sleeve includes a tubular body with a starting rib extending laterally from the body. During operation of the pump, the starting rib interferes with the stopping rib. A number of shock absorbing pads are disposed between the starting rib and the stopping rib and maintained thereat by a notch and ridge association that extends along each rib and pad. The pump includes a space that allows rotation of the starting rib relative to the stopping rib which provides unloaded starting of the pump.

Abstract: A water cooling type heat dissipation module for an electronic device includes a base disk, a suction disk, a water guide and a cover. The base has two containing spaces and a plurality of cooling strips in the containing space. The suction base is attached to the base disk and further includes two water chambers for receiving sucked water, two inlets and two outlets. The water guide is attached to the suction disk with two guide port at the periphery thereof. The cover closes the suction disk and is movably joined to a guide fan. When the heat dissipation module is full with fluid, the fluid can flow therein rapidly while the guide fan rotating such that the fluid is discharged from and flows into the heat dissipation module more effectively.

Abstract: A controllable coolant pump for internal combustion engines driven by torque transmission elements has a pump housing, a driven shaft mounted in the pump housing, an impeller wheel arranged fixedly in terms of rotation on a free, flow-side end of the shaft, and a pressure-activated valve slide having an outer cylinder covering the outflow region of the impeller wheel in a variable manner. The valve slide is of annular configuration and is arranged on piston rods mounted displaceably in the pump housing. An annular piston mounted in an annular groove in the pump housing and movable in a defined manner in the annular groove via excess pressure or vacuum is arranged on the piston rods in a manner lying opposite the valve slide.

Abstract: A centrifugal compressor assembly for compressing refrigerant in a 250-ton capacity or larger chiller system comprising a motor, preferably a compact, high energy density motor or permanent magnet motor, for driving a shaft at a range of sustained operating speeds under the control of a variable speed drive. Another embodiment of the centrifugal compressor assembly comprises a mixed flow impeller and a vaneless diffuser sized such that a final stage compressor operates with an optimal specific speed range for targeted combinations of head and capacity, while a non-final stage compressor operates above the optimum specific speed of the final stage compressor.

Abstract: A turbomachinery device operable in either a compressor mode or a turbine mode. The device includes an impeller that rotates in the same direction in both modes, and the general flow direction remains the same in both modes. An inlet flow-guiding device may be included to direct fluid into the impeller. The impeller is coupled to a motor/generator, which operates as a motor to add power to the impeller in the compressor mode, and as a generator in the turbine mode to extract mechanical power from the impeller and convert it into electrical power. An outlet flow-guiding device may also be included. The inlet and outlet flow-guiding devices can be inlet and outlet guide vanes that are variable in setting angle or are extendable and retractable into and out of the flow path, or can be other types of flow-guiding devices.

Abstract: An integrated pumping module for use in a thermal management system, for example for a fuel cell. The integrated pumping module includes a diverting or mixing valve closely coupled to a pump element, such as the volute chamber of a centrifugal pump. The valve chamber and the pump chamber are closely and directly coupled through a connecting passage so as to minimize pressure drop as a liquid coolant passes through the connecting passage from the valve chamber to the pump chamber. A bypass inlet and outlet opening are provided in the valve chamber to permit all or a portion of the coolant flow to be diverted to a radiator once the coolant reaches a predetermined temperature. The integrated pumping module may also be provided with a filter housing into which a portion of the coolant flow may be diverted.

Abstract: A fan includes an impeller, a motor, a circuit board, a fan frame and a connecting member. The motor is used to drive the impeller to rotate. The circuit board is electrically connected to the motor. The impeller and the motor are accommodated in the fan frame. The connecting member is disposed at one side of the fan frame. The circuit board is disposed between the connecting member and the fan frame. Also, a fan assembly including such two fans is also disclosed.

Abstract: The present invention provides a pump assembly having an intake, an outtake, and a rotor rotatably mounted to a shaft. A propeller is fixedly mounted to the upstream portion of the rotor and is rotatable upon actuation of the rotor. A passageway is disposed on the rotor so as to provide a path for fluids to cool the shaft. The pump assembly includes chamber and a pipe. The chamber is disposed within the housing and is located downstream the intake and is in communication with the passageway. The pipe interconnects the chamber with the outtake. An impeller is fixedly mounted to the rotor. opposite the propeller and draws air bubbles from the passageway into the chamber.

Abstract: A blower assembly for a leaf blower has a case, a motor, an impeller driven by the motor, and an axial fan driven by the motor. The axial fan and the impeller are connected to opposite ends of the motor. The case has an air inlet, an air outlet and an air channel communicating the air inlet with the air outlet. The impeller is disposed inside the air channel to move air through the air channel from the air inlet to the air outlet. The axial fan is arranged to generate an axial flow of air towards the motor to cool the motor.

Abstract: A cooling apparatus is for dissipating heat from an electronic device. The cooling apparatus includes a casing, an impeller, and a motor. The casing is for absorbing the heat and allowing coolant to flow therein. The impeller is received in the casing. The motor is received in the casing, and is for providing a force to drive the impeller to rotate to force the coolant to flow. The coolant flows between the casing and the motor to take the heat away.

Abstract: A modular vertical pump assembly has a motor, a coupling, a pump, a frame, and a base. The frame installs on the base around the pump, and supports of the frame hold a mount for the motor. The shaft from the motor extends through the mount, and the coupling installs between the motor shaft and a pump shaft. Preferably, the coupling uses an adapter and a stuffing box. Three supports fixedly attach to the mount and base, while one support is removable. To remove the pump for repair or replacement, the removable support detaches from the frame, and the pump detaches from the base and lifts from the frame's free side. Like the pump, the motor can be removed independently from the mount. In both cases, the coupling allows the pump's shaft to freely separate from the motor's shaft.

Abstract: The invention is a magnetically driven pump with a floating impeller and driven magnet, and the invention includes an impeller surface having geometric figures acting as the pumping bodies.

Abstract: A cooling fan includes an outer housing. A motor support is fixed to the outer housing and a motor is mounted to the motor support. A hub is coupled to the motor and, with the motor support, forms a motor enclosure that substantially surrounds the motor. Multiple blades extend radially from the hub and are arranged so as to generate a flow of air around the motor enclosure when the blades are rotated. The cooling fan also includes a motor cooler including a flow path through the motor enclosure, wherein the flow path has a first opening and a second opening, wherein the second opening is disposed within an area of lowered downstream pressure so as to develop a differential pressure between the first and second openings and generate a flow of air through the motor enclosure as the motor operates.