57results about How to "Extend motor life" patented technology

Disclosed herein is an apparatus and method with inductive heating of an electrically conductive workpiece such as a barrel used in molding or extrusion, having a layer of thermal insulation interposed between the induction windings and the workpiece, and using alternating current (AC) at an elevated frequency. Further, variable pitch induction windings may be used to generate a non-uniform and calculated heat input profile, such as to compliment the configuration of a screw for transporting material through the barrel.

Electronic device for controlling a synchronous motor with permanent-magnet rotor, comprising an alternating voltage current source at mains frequency connected in series with said synchronous motor (1), at least one static switch (2) connected in series with said synchronous motor (1), and an electronic circuit (3) that acts on said static switch (2). Said electronic circuit (3) determines the timing for the firing of the static switch (2) taking as reference the zero-crossing of the mains voltage (Vr) and applying a firing time (Td) starting from said reference, said firing time (Td) being obtained as a function of the position of the rotor (1A) of the motor (1) in the previous half-cycles.

A versatile compact air precleaner for separating heaver-than-air particulate debris from debris laden air has a retroflexed flow path through a separator chamber. A motor of a motor-driven fan is located in the flow path downstream from the separator chamber. A plurality of independently rotatably adjustable housing sections of a housing are formed with respective ones of the air precleaner debris laden air inlet, particulate debris ejector ports, clean air outlet, and mounts for mounting the air precleaner to a support to provide utility with multiple clean air outlet configurations, directions of ejection of particulate debris from the ejector ports, inlet configurations, precleaner sides for mounting, and filter sizes. A separator chamber end section including the ejector ports and the filter are connected forming a removable, disposable air filter cartridge which obviates ejector port clogging with change of filters.

A heat exchanger to serve ESP equipment installed on the seabed located in either a caisson or skid. A hot oil line connects the base of the ESP motor with the externally located heat exchanger, allowing hot motor oil to be circulated through coils externally exposed to seawater. The heat from the oil is rejected to the seawater and the cooled oil is reintroduced to the motor via a cold oil line that communicates with the seal section. The heat exchanger arrangement reduces the temperature of an ESP motor, thus allowing the motor to operate longer and more reliably.

A crushing and mixing device and a mixing and melting method attained by the crushing and mixing device having a mixing vessel 3 in which a plurality of blades 10a to 10f are installed on a rotary shaft 5 which is rotated by a motor 8 as a driving source and freely rotatably supported, to mix and crush materials; wherein a spiral vane 12 is equipped to supply the materials which are introduced to a rotary shaft 5 corresponding to an inlet for materials, to the mixing vessel 3; at least two blades of the plurality of blades 10a to 10f are installed on the rotary shaft at an inclined angle which reduces each other's opposing space in the rotating direction; an outlet 17 is disposed at a side of a wall of the mixing vessel to take out the materials when the mixed and crushed material reaches a predetermined state; the materials are mixed and crushed in the mixing vessel 3, and an entrained moisture therein is dewaterd by the heat generated by actions of shearing, friction and compression; and a molten binder is impregnated in the dehydrated materials. This device and method provide methods for utilizing or reusing materials which are problematic for conventional methods in terms of cost and productivity, the materials such as chipped woody waste materials or woody waste materials like pruned branches and leaves of trees, and plant materials and plant-waste materials like stems and leaves of wheat, and are suitable for applications to enhance utilization of wasted materials by improving the filling ratio thereof and to promote reuse of the wasted materials.

The present invention relates to a system to control the luminosity and extend the life of the motor vehicle lghts. The present invention can further be extended to where the motor vehicle lights are progressively increased as the current ambient light conditions or the current visibility conditions decrease and progressively decreased as the current ambient light conditions or the current visibility conditions.

A through hub fill hole and air vent having an enlarged fluid diffusion path is provided for spindle motors. Oil leakage and evaporation from a motor is reduced. In an aspect, oil is retained under conditions of at least a 1000 G shock event. In an aspect, the hub fill hole has a varying diameter and geometry, and is angled, further reducing oil leakage. In an aspect, an additional cavity is employed within the hub, for maintaining rotor rotational balance. The process of filling oil into a spindle motor is made easier from a motor set up and tooling perspective. Removal of the hub and other motor components is not necessary for filling a motor. Large diameter oil fill dispenser heads, subambient and ambient fill processes, and micro dispenser fill processes may be utilized. A measured and controlled amount of oil can be dispensed, reducing variability in the motor filling process.

A bearing positioning structure for a motor includes an axial tube and a positioning member. The positioning member includes a pressing portion and a coupling portion. The coupling portion of the positioning member is engaged with a coupling section of the axial tube for securely mounting the positioning member to the axial tube, with the pressing portion of the positioning member pressing against a bearing to position the bearing in the axial tube. In another example, the coupling portion of the positioning member engages with a coupling section on a stator.

A multi-brush cage assembly for a subfractional horsepower electric motor has two brushes 22, 23 received in separate chambers 24, 25 of the cage and urged by springs 26, 27 towards a commutator 15 of the motor. An L-shaped changeover lever 30 is located on a pivot 33 between the chambers and keeps one brush 23 retracted until the other brush 22 has worn out.

An electric fan system has a first electric blower 10, which utilizes a brushless motor, and a second electric blower, which utilizes a brushed motor, for distributing the cooling air to the radiator and the condenser. The system has an electronic engine control unit which activates only the first electric blower when it determines that the cooling water temperature is less than T2, and activates both the first and second electric blowers when it determines that the cooling water temperature is T2 or higher. The water temperature is based on a detection output from a cooling water temperature sensor. Thus, since the electric blower is not activated unless the cooling water temperature becomes T2 or higher, use of the brushed motor is limited and its life is increased.

Systems and methods of cooling a motor of an electrical submersible pump (ESP) assembly employed in an electrical submersible subsea booster pumping system, are provided. A supporting frame structure such as an ESP mounting skid or top end assembly of a caisson having structural members exposed to environmental seawater, is modified or designed to include fluid conduits within the structural members to establish lubricant pathways for lubricant to flow. A heated/hot lubricant line connects between a supporting structure lubricant inlet port and an ESP motor lubricant outlet port. A cooled lubricant line connects between a supporting structure lubricant outlet port and an ESP motor lubricant inlet port. A pump or other fluid moving device circulates lubricant from the ESP motor to the lubricant pathways within the supporting frame structure, whereby the seawater cools the lubricant contained therein, which is then circulated back into the motor to assisting cooling the motor.

A drive system for an imaging device is provided. The drive system comprises a table assembly for engaging and supporting a patient and a driving system for moving the table assembly. The driving system can be directly coupled to the table assembly. The table assembly comprises a carrier that engages and supports a patient and at least two elongated rails placed beneath the carrier and extending between the opposing sides of the table assembly. The driving system for moving the table assembly comprises at least one double end shaft motor, at least one belt coupled to the double end shaft motor via a coupling device and at least one pair of timer pulleys coupled to the belt. Further, each timer pulley is directly coupled to a feedback device at a first end and a brake device at a second end.

A handheld device comprising a motor for generating an airflow through the device, the motor including: a frame for supporting a rotor assembly and a stator assembly, the frame including an inner wall and an outer wall and a plurality of diffuser vanes extending between the inner wall and outer wall; a rotor assembly including a shaft, a magnet, a bearing assembly and an impeller; and a stator assembly including a bobbin, a stator core and a winding wound around the bobbin; the frame being formed of zinc and the impeller being formed of aluminium.

This invention discloses a DC motor with externally mounted carbon brushes, comprising a front end cover, a housing, magnet, a rotor, a commutator and a back end cover, characterized in that the outer wall of the back end cover is provided with two mounting holes for brush brackets which are mounted with annular brush brackets having identical structures, a radial sliding tube used to mount the carbon brush is located in said brackets, said carbon brush in the sliding tube for carbon brush contacts the commutator by a spring biasing against a brush cap, the outward end thereof being connected to a copper sheet through a brush shunt, said copper sheet is held against the back end of the sliding tube, a lead wire for a power source is lead out from an outlet of another copper sheet at an outer wall of the sliding tube. The electrical connection of the carbon brush is lead out from the sliding tube through the brush shunt and the copper sheet, therefore the electrical connection is reliable. The present invention is simply constructed and easily mounted, the volume thereof is small, the operation thereof is reliable, it is easy to maintain and replace the carbon brushes and it extends significantly the life of the motor.

The present invention relates to a motor device utilizing magnetic force to drive a rotor. The motor device includes a main body, a rotor and a controlling unit. The main body has two openings and an internal chamber. The rotor is magnetic and swingably disposed in the chamber between the two openings. The controlling unit is disposed on outer side of the main body to apply a magnetic force to the rotor for driving the rotor to at least rotate. The rotor is a column body with a certain length. The rotor has a profile corresponding to a configuration of a peripheral wall of the chamber. The outer face of the rotor is formed with at least one spiral groove to define at least one spiral stripe. The rotor is magnetically driven to drive a fluid to flow from one opening to the other opening.

The single-phase brushless motor according to one aspect of the present invention includes a coil array having a plurality of magnetic coils 11-14; a magnet array having a plurality of permanent magnets 31-34; a magnetic sensor 40 for detecting relative position of the magnet array and the coil array; and a drive control circuit that, utilizing the output signal SSA of the magnetic sensor, generates application voltage for driving the coil array with a single-phase drive signal. The coil array includes a magnetic member 20. This magnetic member 20 is constituted such that, with the single-phase brushless motor at a stop, the centers of the permanent magnets 31-34 come to a stop at locations offsetted from the centers of the magnetic coils 11-14, due to attraction of the magnetic member 20 by the magnet array.