1222results about "Cooling/ventillation arrangement" patented technology

The invention relates to a cooling structure for an ultraprecise linear motor and belongs to the technical field of linear motors. The cooling structure solves the problem of proneness to heat exchange with environment caused by high side temperature of two-side surface-mounted cooling structures of existing linear motors. The cooling structure comprises a winding supporting portion, a winding and a heat conductive portion, wherein the winding is fixed on the surface of the winding supporting portion, the heat conductive portion is arranged on the surface on the outer side and fixedly connected with the winding supporting portion, the heat conductive portion is a copper foil ring which fits the outer profile of the winding and is sleeved and fixed on the surface on the outer side of the winding, or the heat conductive portion is a copper foil heat conductive ring formed by arraying multiple copper foil sections in a dispersed manner, the copper coil heat conductive ring fits the outer profile of the winding, and each copper coil section is fixed on the surface on the outer side of the winding. The cooling structure for the ultraprecise linear motor is suitable for cooling of linear motors.

An electric motor may include a motor housing. An electric motor may include a shaft that extends in a longitudinal direction through a length of the motor housing, a first motor disposed within the motor housing and mounted to the shaft, a second motor disposed within the motor housing and mounted to the shaft. An electric motor may include an adaptor disposed within the motor housing, where a portion of the first motor and a portion of the second motor are disposed within the adaptor and the adaptor supports and pilots the first motor and the second motor. An electric motor may include at least one motor controller disposed on the adaptor and within the motor housing, the at least one motor controller electrically connected to the first motor and to the second motor.

A barrier for controlling cooling within a sealed cooled motor and a compressor including the barrier are provided. The barrier includes an insulator, at least one fastener, and a vent. The insulator restricts flow of working fluid between a first side and a second side. The at least one fastener secures the insulator. The vent controls a pressure differential between the first side and the second side. The vent can include at least one hole through the insulator. The vent can be provided as a hole through the insulator for a rotating shaft of the compressor.

An ultra-thin four-pole series wound motor for a household blender, relating to the technical field of ultra-thin series wound motors, and comprising a mount (1), wherein a stator (2) is mounted on the mount (1), four winding coils (3) are provided on the stator (2), a steel shaft (4) is rotatably connected onto the mount (1) by means of a bearing, and a rotor (5) is mounted on the steel shaft (4). By providing four winding coils, the number of winding coils is increased, thereby increasing the strength of a generated magnetic field; at the moment of starting, the stronger magnetic field and appropriate current are generated, resulting in higher starting torque, so that the motor can have a greater output in a smaller volume, achieving miniaturization of external dimensions of household high-power blenders and reducing product costs.

The invention relates to an end shield (10) for a rotor (3) of a rotary electric machine (1) rotating about an axis of rotation (X), comprising an inner face (101) facing a rotor mass (30), an outer face (102) opposite the inner face (101), a radially outer edge face (103) extending between the inner face (101) and the outer face (102), the end shield (10) comprising one or more supply ducts (12) for a cooling fluid, at least one supply duct (12) successively comprising: - a collection zone (12a) on the inner face (101) of the end shield; - a first narrowing (13a) of a cross section of the supply duct; - an intake chamber (12c); - a second narrowing (13b) of the cross section of the supply duct; - an end portion (12b), in particular flared, in particular located on the edge face and / or on the outer face of the end shield, the second narrowing (13b) extending in particular along a substantially oblique elongation axis (Y).

To provide a rotary electric machine system in which a rotor is efficiently cooled by lubricating oil.SOLUTION: A rotary electric machine system includes a rotor having a permanent magnet and a rotary shaft 40. The rotary shaft is supported by a rotary electric machine housing via a first bearing 74 and a second bearing 84. A first oil supply passage for supplying the lubricating oil to the first bearing and the second bearing is formed in the rotary electric machine housing. Further, an in-rotor oil passage is formed inside the rotor. A part of the lubricating oil is diverted from the first oil supply passage and supplied to the in-rotor oil passage.SELECTED DRAWING: Figure 12

System, comprehensive: a shaft assembly comprising a shaft outlet flange, a shaft inlet flange and an insert arranged in an internal volume formed by the shaft outlet flange and the shaft inlet flange, wherein the shaft inlet flange has an internal volume with internal surfaces in flush contact with a lance, and the shaft inlet flange is radially supported by a bearing; and a vent located in the shaft inlet flange at a point upstream of the bearing and the internal volume with respect to a lubricant flow direction.

The application discloses a hairpin motor stator based on circular conductors, comprising a stator core and a stator winding, the stator core is provided with a plurality of stator slots in the circumferential direction, the stator slots extend in the radial direction, and the circumferential width gradually decreases from the slot bottom to the slot opening direction; the stator winding is connected by a plurality of hairpin conductors, the hairpin conductor is configured as an integral component based on a circular conductor substrate; the hairpin conductor comprises a first leg and a second leg, the first leg is configured as a circular cross-section column body and is configured to adapt to the slot bottom side of the stator slot, and the second leg is configured as a flat cross-section column body and is configured to adapt to the slot opening side of the stator slot; the application has the technical effects of low cost, high slot fill rate and excellent stator winding end cooling.

The utility model relates to a kind of starting power generation integration motor for motorcycle, including shell, base, stator core and stator winding being located in shell, rotatably arranged in the rotor core of shell, the rotor core is equipped with permanent magnet outside, the rotor core two ends are respectively connected with first rotating shaft and second rotating shaft, the stator core is fixedly connected with shell by multiple elastic support columns;The first rotating shaft is fixedly provided with first disc, multiple first fixed blocks are annularly distributed on the first disc, and a clearance slot is provided on each first fixed block;Second fixed block is provided on the second disc connected with motorcycle transmission component, a cylinder is rotatably arranged in the clearance slot, the cylinder is fixed with third disc, damping spring is provided between adjacent two third discs.The utility model solves the pain point of insufficient stability caused by motor vibration noise, significantly improves the driving experience of motorcycle and motor service life.

The motor has a case in which a rib is provided on an outer peripheral surface. The rib has a first portion and a second portion having a smaller amount of protrusion from the outer peripheral surface than the first portion. The first portion extends in a polygonal grid and the second portion is adjacent to the first portion and extends along the first portion. Since the rib provided in the case of the motor has the first portion having a large protrusion amount and the second portion having a small protrusion amount, heat can be efficiently dissipated from the case.

The present disclosure is generally directed to techniques for radial alignment of motor components relative to each other to achieve a motor with a rotor bore having sub-micron end-to-end deviation. In an embodiment, a rotor bore alignment tool is disclosed herein that can be inserted between motor components, and more particularly, apertures / through holes defined by each of the motor components such as housing sections and a stator assembly. The rotor bore alignment tool includes expandable members that can be selectively transitioned to an extended position to cause each of the motor components to be radially aligned prior to securely coupling the same in a so-called "stack" to form a motor. Once the motor components are coupled together, the resulting motor includes a rotor shaft extending from end-to-end that preferably includes a sub-micron deviation of less than 10 microns, and more preferably less than or equal to 5 microns, for example.

The application provides a double-motor spray cooling system, a power assembly and a vehicle, and relates to the technical field of vehicle parts. The double-motor spray cooling system comprises a liquid supply pipe, a first spray branch pipe, a second spray branch pipe and a liquid supply structure. An isolation wall is arranged in the liquid supply pipe, and the isolation wall divides the inner cavity of the liquid supply pipe into parallel first and second liquid supply flow channels. The liquid inlets of the first and second liquid supply flow channels are in communication with the liquid outlet of the liquid supply structure to obtain cooling liquid. The liquid outlet of the first liquid supply flow channel is in communication with the first spray branch pipe, and the first spray branch pipe is used for spraying and cooling the first motor. The liquid outlet of the second liquid supply flow channel is in communication with the second spray branch pipe, and the second spray branch pipe is used for spraying and cooling the second motor. Through integrated design of the single-pipe double-flow channel, the pipeline structure of the double-branch liquid supply is integrated into a single liquid supply pipe, thereby effectively simplifying the pipeline layout of the double-motor spray cooling system and reducing the installation space occupied by the pipeline.

To provide a fan device that has a simple structure, is lightweight, and can both secure an air flow rate depending on the rotational speed and reduce noise, and a motor using the fan device.SOLUTION: A fan device 10 according to an embodiment has a fan body 41, a groove 42, a fan blade 43, and a spring member 44. The fan body 41 rotates in one direction with the rotor. The groove 42 is provided in the fan body 41 and extends outward from the center in the radial direction. The fan blade 43 is movable in the groove 42 in the radial direction. The spring member 44 applies a pushing force to the fan blade 43 outward in the radial direction as a pushing force. The fan blade 43 moves radially inward along the groove 42 when the moving force, which is the force applied radially inward by the air flow due to the increase in the rotation speed of the fan body 41, becomes larger than the pushing force of the spring member 44.SELECTED DRAWING: Figure 1

A power supply apparatus (100) comprises an inverter (110), voltage and current measuring devices (120a, 120b), a temperature sensor (130), and an operation circuit (140). The inverter (110) comprises change-over switches (SW1-SW6). The voltage and current measuring devices (120a, 120b) are configured to measure the voltage (V1) and the current (I1) on the change-over switches (SW1-SW6). The temperature sensor (130) is configured to measure an initial temperature (T[0]) in an initial state. The operation circuit (140) is coupled to the voltage and current measuring devices (120a, 120b) and the temperature sensor (130). The operation circuit (140) is configured to: execute a power model (142), and calculate a first transient power of the change-over switches (SW1-SW6) on the basis of the initial temperature (T[0]), the voltage (V1), and the current (I1); and execute a thermal model (144), and calculate a first transient ideal temperature of the change-over switches (SW1-SW6) on basis of the first transient power. The power supply apparatus (100) calculates, in real time, the transient temperature of channel interfaces of the change-over switches (SW1-SW6) by measuring the voltage (V1) and the current (I1) on the change-over switches (SW1-SW6) of the inverter (110). The present invention also relates to a temperature measurement method (500) for a power supply apparatus, and an electrical system (ES1).

An electric machine (1) is described, comprising two end shields (6, 7), a stator (5) arranged between the two end shields (6, 7) with a stator lamination stack (11, 11a) and stator windings (12) arranged therein, and a rotor (3) arranged in the stator (5) with a rotor shaft (2) rotatably mounted in the two end shields (6, 7). The electric machine (1) also has cooling channels (13) arranged entirely within and surrounded by the stator lamination stack (11, 11a). Furthermore, a geared motor (30) with such an electric machine (1) and a vehicle (20) with such an electric machine (1) are described.

The application discloses an immersed cooling stator, a stator assembly and a motor, and belongs to the technical field of motor structures. The immersed cooling stator comprises a stator core, the end of the stator core is provided with at least two annular protruding parts which are radially spaced and axially protrude, and the two annular protruding parts form a cooling cavity. An axial flow guide structure which is in communication with the cooling cavity is arranged on the stator core. The annular protruding part is preferably integrally formed with a lap joint part which is injection molded with the end of the stator core, and an insulation layer can be injection molded in the stator slot. The stator can be assembled with a separate sealing cover to form a stator assembly, or can be directly sealed and matched with an end cover or an inner wall step surface of a motor shell and integrated in the motor. According to the application, the cooling cavity is directly constructed at the end of the stator and is in communication with the internal flow guide structure, so that the cooling medium can directly flow through and cool the stator winding, the thermal resistance of indirect cooling is eliminated, the heat dissipation efficiency is high, the structure is compact, and the motor power density is improved.

An electric drive for a vehicle includes a stator including a stator winding and a stator core having a longitudinal axis and opposing axial first and second face sides, the stator winding forming a first winding head at the first face side and a second winding head at the second face side. A housing has an interior that forms a stator accommodation space and a radial stop, which delimits the stator accommodation space axially. A spacer is attached to the first face side at a radial position more outward than the first winding head and abutting against the stop.

An electric machine (1, 1a, 1b) is described, comprising a machine housing (2), a stator (6) arranged in the machine housing (2), and a rotor (9) rotatably mounted in the machine housing (2) relative to the stator (6). The machine housing (2) encloses an interior space (B) of the electric machine (1, 1a, 1b) and separates it from an exterior space (C). Furthermore, the electric machine (1, 1a, 1b) includes an adsorption element (19) arranged in the interior space (B), which can be actively cooled below the condensation point of the air in the interior space (B) for absorbing water vapor or water. A vehicle (29) with such an electric machine (1, 1a, 1b) and a method for operating such an electric machine (1, 1a, 1b) are also described.

To provide a motor unit which can be used in a low output type work unit.SOLUTION: A motor unit causes a work unit to operate. The motor unit includes: a body housing which includes a first housing and a second housing and in which a housing space is defined between the first housing and the second housing and the first housing and the second housing define an entire outer shape of the body housing; a motor which is disposed in the housing space; an output unit which can be fixed to the work unit and causes the work unit to operate when the motor operates; a battery terminal which is exposed to the outside of the body housing and can be connected to the battery for supplying electric power to the motor; and a control unit which is disposed in the housing space and controls the motor.SELECTED DRAWING: Figure 12

A power tool may include a housing. A power tool may include an electric motor. A power tool may include a printed circuit board assembly configured to supply electrical current to the electric motor. A power tool may include an output unit operably coupled to the electric motor. A power tool may include a tool terminal block supported by the housing and including a tool terminal configured to electrically couple to the battery pack. A power tool may include a busbar extending between and electrically connecting the tool terminal to the printed circuit board assembly, wherein a portion of the busbar defines the tool terminal.

The application belongs to the technical field of motor cooling, ventilation and noise reduction, and discloses a box-type motor cooling structure integrating flow equalization and noise reduction, which comprises a box body, a centrifugal fan, a cooling air duct, a heat exchanger, and a bionic airfoil type partition impedance adaptive flow equalization structure; the partition impedance adaptive flow equalization structure is arranged at the outlet area of the centrifugal fan, and a double-layer cooling air duct noise reduction structure with a built-in Helmholtz resonance cavity is arranged at the main cooling air duct, so that the flow field uniformity at the fan outlet is improved, the air duct propagation noise and pressure pulsation are reduced, and the heat exchange effect of the tube side of the heat exchanger is improved.

The application discloses a four-branch parallel cooling jacket for electric spindle stator temperature field equalization and a cooling performance detection device and method thereof. The cooling jacket comprises a cooling liquid inlet, a cooling liquid outlet and four parallel cooling flow channels branched from the inlet and converged at the outlet, and the geometric structure and scale parameters of the four flow channels are the same. An axial flow channel is arranged at the cooling liquid inlet and is extended to the stator end portion in two ways, and is further divided into two ways along the circumferential opposite directions at the left and right end portions, forming four-branch flow channels, and the four flow channels are extended in a serpentine shape, and are finally converged at the middle position of the cooling jacket. The heat exchange of the high thermal resistance end portion area of the electric spindle stator is strengthened, and the circumferential path is shortened, so that the axial and circumferential temperature field distribution of the electric spindle stator is improved. The detection device and method are used for collecting the stator temperature distribution and the cooling liquid flow parameters under the thermal steady state criterion, and verifying the cooling performance of the cooling jacket and the temperature field equalization of the electric spindle stator.