COOLING METHOD AND COOLING DEVICE OF ELECTRIC MOTOR

An electric motor is cooled by using a first refrigerant. The first refrigerant is cooled by heat exchange with a second refrigerant having a cooling target that is different from the first refrigerant, and the first refrigerant after being cooled by the heat exchange is supplied to the electric mot...

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Bibliographische Detailangaben
1. Verfasser:	TSUKAMOTO, Yukinori
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES BLASTING COOLING OF INTERNAL-COMBUSTION ENGINES COOLING OF MACHINES OR ENGINES IN GENERAL ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL ENGINE PLANTS IN GENERAL ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INSTRUMENTATION OR DASHBOARDS FOR VEHICLES LIGHTING MACHINES OR ENGINES IN GENERAL MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES MECHANICAL ENGINEERING PERFORMING OPERATIONS STEAM ENGINES THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	An electric motor is cooled by using a first refrigerant. The first refrigerant is cooled by heat exchange with a second refrigerant having a cooling target that is different from the first refrigerant, and the first refrigerant after being cooled by the heat exchange is supplied to the electric motor. The flow rate of the supply of the first refrigerant to the electric motor is reduced where a temperature of the first refrigerant is less than a first prescribed temperature as compared to where the temperature of the first refrigerant is greater than or equal to the first prescribed temperature. The flow rate of the supply of the first refrigerant is continuously reduced as long as a temperature of the second refrigerant is below a second prescribed temperature even after the temperature of the first refrigerant reaches the first prescribed temperature.