| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Air-cooled motor | US10643872 | 2003-08-20 | US20040036366A1 | 2004-02-26 | Yukio Katsuzawa; Michi Masuya; Yasuyuki Nakazawa; Taku Oohara |
| An air-cooled motor has a motor body in which a through hole is formed in a rotary shaft, a supply section for supplying a fluid to the through hole, a cylindrical member surrounding the supply section, and a cooling fan provided on the side opposite the motor body with respect to the cylindrical member. A window is provided in the cylindrical member or at least a part of the cylindrical member is made of a transparent material so that the supply section can be visually observed. | ||||||
| 82 | Cryongenic cooling refrigeration system and method having open-loop short term cooling for a superconducting machine | US09902586 | 2001-07-12 | US06442949B1 | 2002-09-03 | Evangelos Trifon Laskaris; Robert Adolph Ackermann; Yu Wang |
| A cooling fluid system is disclosed for providing cryogenic cooling fluid to a high temperature super-conducting machine, wherein said system includes a main cooling system (52, 88) and a second cooling system, said second cooling system comprising a storage device having a first cryogenic fluid; at least one cooling coupling in fluid communication with the first cryogenic fluid from the storage device and a second cryogenic fluid flowing through the main cooling system. | ||||||
| 83 | Method for testing a water-cooled stator of a generator for leaks, and test skid for use in the method | US09408953 | 1999-09-30 | US06367311B1 | 2002-04-09 | Trilok C. Garg |
| A test skid includes equipment for drying water channels in the stator of a water-cooled generator prior to testing the stator for water leaks. The equipment includes a pressure section for supplying compressed air to the stator and a vacuum section for applying vacuum to the stator. The pressure section includes an air receiver and a heater to heat compressed air as it flows from the air receiver to the stator. The hot air warms the stator and facilitates removal of water from the water channels by thermal evaporation. After the stator is thoroughly dry, the equipment on the test skid is used for pressure decay and vacuum decay testing of the stator. | ||||||
| 84 | Linear motor with improved cooling | US631343 | 1996-04-12 | US5783877A | 1998-07-21 | Anwar Chitayat |
| A linear motor has an epoxy core armature with dual cold plates attached to a top and a bottom of the epoxy core armature to effect cooling of the epoxy core armature. The use of dual cold plates with circulating cooling fluid reduces heat build up by providing paths of high thermal conductivity from any point in the epoxy core armature to the cold plates. Another embodiment of the invention employs ceramic heat sink plates laminated to sides of the epoxy core armature to increase the thermal conductivity and the resultant power dissipation capacity of the epoxy core armature without introducing magnetic or electrically conducting materials. Other embodiments of the invention utilize cold plates formed from extrusions of aluminum or ceramic materials. Still other embodiments have forced air cooling wherein a U-frame of the linear motor has longitudinal flexible seals and air is forced through the U-frame in which the epoxy core armature travel. Yet another embodiment has a U-frame with ducts formed therein through which air is force. Orifices connect the ducts to an interior of the U-frame through which the epoxy core armature travels. | ||||||
| 85 | Drive disconnect for oil-cooled electrical generator | US196702 | 1994-02-15 | US5418412A | 1995-05-23 | Stephen F. Brucker |
| An electric generator of the type that is oil-cooled and generally used in aircraft includes a fluid brake assembly. The fluid brake assembly includes a fluid brake rotor which is generally in the form of a fan or impeller which is connected to the drive shaft of the generator. Under normal conditions with the cooling oil withdrawn from the housing of the generator by the scavenge system, the fluid brake rotor freely turns with the shaft. When the oil scavenge system becomes incapacitated, the generator becomes "flooded" and the fluid brake rotor acts as pump to try to pump the oil, creating a torque load on the drive shaft. This load is preferably greater than the shear strength of the shaft, causing the shaft to shear and disconnecting the generator from the aircraft engine. By shearing the drive shaft, the operation of the main engine is unaffected by the flooding of the generator, and serious failure of the aircraft engine is avoided. | ||||||
| 86 | Chair control | US75070 | 1993-06-10 | US5370445A | 1994-12-06 | Arkady Golynsky |
| Disclosed is knee tilt chair control mechanism for a pedestal base chair having a chair control housing mounted on the pedestal chair base and pivotally supporting a chair seat support member having a cam surface formed along a portion of the bottom surface thereof. A torsion spring is secured to the chair control housing and is adapted to resist the pivotal movement of the chair seat support member. The torsion spring has a lever arm adapted to move along the cam surface during the pivotal movement of the chair seat support member and thereby make a more effective use of the torsion spring and a chair more comfortable to the user. | ||||||
| 87 | Generator auxiliary forced cooling and lubrication system and method | US780689 | 1991-10-18 | US5196746A | 1993-03-23 | Jack L. McCabria |
| A generator system having an auxiliary forced cooling-oil lubrication system in which a second pump for the fluid is driven in a self sustaining cooling and lubricating cycle, despite the failure of a primary pump action. The second pump can be electrically or mechanically driven to cause a reserve portion of the cooling-oil lubricant to recycle from a secondary reservoir. This secondary reservoir reserves a fluid capacity not circulated by gravity feed in a primary fluid circulating path, which normally returns the fluid to a primary reservoir. A primary pump circulates the fluid through a primary portion of a heat exchanger with an oil-to-fuel heat exchange transfer to sustain the cooling and lubricating functions of the generator system and the failure mode, second pump sustains cooling operations of a permanent magnet generator, despite the failure of a primary pump or loss of fluid circulating in the primary circulation path. | ||||||
| 88 | Method and apparatus for automatically reoiling an electric generator | US532823 | 1990-06-04 | US5121341A | 1992-06-09 | Jack L. McCabria; Robert A. Bayles |
| A method for automatically replenishing oil in a coolant system of an electric generator produces a first signal representative of the speed of the generator and a second signal representative of the pressure of oil in the coolant system of the generator. These signals are combined with a reference signal to produce a control signal representative of a low oil condition in the coolant system. When such low oil condition exists, additional oil is delivered to the coolant system in response to the control signal. In the preferred embodiment, this additional oil is supplied from a source of high pressure oil. | ||||||
| 89 | Control of hydrogen cooler employed in power generators | US653575 | 1991-02-11 | US5097669A | 1992-03-24 | Homer G. Hargrove; Lon W. Montgomery; James R. Pipkin |
| A system for cooling hydrogen which is used for cooling an electric power generator, cooling of the hydrogen being effected by transfer of heat from hydrogen leaving the generator to cooling water extracted from a source which has a temperature determined by external conditions. The system is composed of an indirect heat exchanger for bringing cooling water into heat exchange communication with hydrogen leaving the generator and cooling water is supplied to the heat exchanger partially from the source and partially from cooling water leaving the heat exchanger. A temperature monitoring unit produces an indication of the temperature of the cooling water extracted from the source and a control unit is coupled to the temperature monitoring unit to cool the hydrogen to a desired temperature while maintaining a constant flow rate of cooling water into the heat exchanger. | ||||||
| 90 | Stator coil water system early alert hydrogen leakage monitor | US441135 | 1989-11-22 | US4959569A | 1990-09-25 | Owen R. Snuttjer; Michael J. Rasinski |
| An apparatus for monitoring hydrogen leakage from a generator frame into the stator coil water cooling system. The monitor is designed to alert the operator should leakage exceed a rate of twenty cubic feet per day (20 cfd). A pressure relief valve set at four (4) psig and orifice are provided, along with a second relief valve having a higher setpoint than the first, such that pressure will increase in the holding tank if leakage exceeds 20 cfd setpoint of the orifice. A high pressure alarm, set at a level higher than the first relief valve but less than that of the second, will then sound to alert the operator to protect the system from an overly large or gross failure of the system. By continusouly monitoring a relatively small steady state leakage rate, the operator can be aware of a minor problem which can be corrected at a scheduled maintenance outage, before a gross failure of the system, requiring a costly shutdown of the turbine-generator, would otherwise occur. | ||||||
| 91 | Cooling apparatus for a starter motor and/or a generator for a car | US171382 | 1988-03-21 | US4864974A | 1989-09-12 | Hiroaki Aso |
| A cooling apparatus for electrical accessories such as a generator and a starter motor for a car comprises a cooling liquid conduit for feeding a part of a cooling liquid for cooling an engine to a starter motor for starting the engine, and/or an A.C. generator and having at least one sensor for detecting the temperature of the cooling liquid and at least one valve provided in the cooling liquid conduit so that opening and closing operations are controlled on the basis of an output from the sensor. | ||||||
| 92 | Detecting local overheating in liquid-cooled windings of electric machines | US1344 | 1987-01-08 | US4808867A | 1989-02-28 | Arnold Wichmann; Peter Grunewald |
| A method for determining overheating in liquid-cooled windings of electric machines includes acoustically monitoring cooling liquid with at least one sound pickup, and detecting noises generated by bubbles in the event of local overheating if the boiling point of the cooling liquid is exceeded. An apparatus is also provided for carrying out the method. | ||||||
| 93 | Method of balancing electrical machine rotor | US201905 | 1980-10-29 | US4370800A | 1983-02-01 | Viktor V. Kuzmin; Vadim B. Kaplunov; Boris I. Ljuty |
| Method of balancing an electrical machine rotor comprising starting the liquid cooling system of the rotor winding formed of parallel hydraulic branches arranged on the body of the rotor, monitoring the variables of the cooling conditions of said branches, with the liquid cooling system under operation, for determining temperature asymmetry which leads to heat unbalance of the rotor, and altering hydraulic resistance in said branches so that the proportion of said variables provide the same magnitude of overheating of the liquid at least in each pair of the diametrically arranged branches of the cooling system. | ||||||
| 94 | Carboxylic acid composition for forming thermoparticulating coating | US854944 | 1977-11-25 | US4142416A | 1979-03-06 | James D. B. Smith; David C. Phillips |
| A composition is disclosed of a carboxylic acid, a resinous carrier, and a solvent. The composition is applied to a portion of an electrical apparatus which is exposed to a gas stream. The solvent in the composition is evaporated to produce a thermoparticulating coating. When the electrical apparatus overheats the carboxylic acid in the coating forms particles in the gas stream which are detected by the monitor. | ||||||
| 95 | Means for collecting moisture in canned electric motors | US676701 | 1976-04-14 | US4104551A | 1978-08-01 | Wilhelm Blank; Ernst Roth |
| An explosion-proof canned electric motor for use at elevated temperatures wherein the upper portion of the motor housing contains the stator windings and the rotor and is connected with a terminal box by means of a tubular heat barrier. The terminal box is disposed at a level below the upper housing portion and has an annular venting orifice in the lowermost part thereof so that condensate which accumulates in the housing flows toward the orifice. Such condensate is absorbed by a cake of diatomaceous earth or another suitable porous desiccant which is placed into the path of condensate flow toward the orifice. The desiccant also removes moisture from air which flows into the terminal box, and the desiccant is relieved of accumulated moisture during starting of the motor when the air in the housing expands as a result of heating and flows through the pores of the desiccant on its way into the orifice. | ||||||
| 96 | Leak indicating apparatus for a closed cooling system of an electric machine | US605537 | 1975-08-18 | US4008755A | 1977-02-22 | Detlef Vandamme |
| The invention is directed to a leak indicating apparatus for the closed cooling system of an electric machine. The elevation of the coolant level in the expansion tank of the cooling system as well as the measured average temperature of the coolant are translated into electrical signals which are compared with each other. Only when there is a deviation from the normal volume-temperature proportionality and after a time delay, is replenishing coolant supplied or an indicating device actuated. | ||||||
| 97 | Heating indicating device of an electric motor | US33849173 | 1973-03-06 | US3809960A | 1974-05-07 | JOSSIC A |
| Heating indicating device for the rotor of an electric motor notably using direct current. According to the invention, this device is characterized in that it comprises a resistor mounted in series with said rotor, means reading the voltage across said resistor and supplying an output voltage corresponding to the square of the input voltage, means simulating the thermal exchange time constant between said rotor and its environment and causing progression, in time, of said output voltage in accordance with said time constant, means for emitting a reference voltage representative of the maximum allowable temperature that must not be exceeded for the rotor and means for comparing this reference voltage and the output voltage of the means simulating the time constant. Supervision of motor, notably in printing machines.
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| 98 | Gas filled vertical dynamoelectric machine | US3751699D | 1972-04-25 | US3751699A | 1973-08-07 | GLEICHMAN R |
| A totally enclosed, inert gas filled vertical dynamoelectric machine is described wherein liquid lubricant in the lower bearing housing is employed to seal the machine output shaft against the loss of inert gas. To inhibit loss of lubricant from the seal, a stationary oil sleeve concentrically disposed within a zone between the rotor shaft and shaft sleeve protrudes to a height in excess of the oil level within the housing by an amount at least equal to the change in level produced by the pressure of the inert gas within the machine. The lower bearing preferably is enclosed by a selectively notched bearing cover which serves in conjunction with annular grooves upon the shaft sleeve to prevent oil creepage along the exterior of the shaft while blow-out of oil from the seal by excessive gas pressure within the machine is inhibited by a liquid filled, generally U-shaped tube communicating the motor interior with the ambient. To prevent turbulence produced by rotation of the rotor from breaking the seal, the lubricant should extend to a level above the bearing or a selectively apertured partition could be inserted between the lower end of the shaft sleeve and the bearing.
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| 99 | Safety arrangements for electrically-operated equipment in surgery or anesthesia rooms | US55577266 | 1966-06-07 | US3393626A | 1968-07-23 | KARL BRAUN; BENNO STREU |
| 100 | Titanium alloy articles resistant to hydrogen absorption for dynamoelectric machines | US1640560 | 1960-03-21 | US3113227A | 1963-12-03 | BOMBERGER HOWARD B; KNAPEK ERNEST E |
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