According to the present invention, provided is a driving motor cooling system including: a compressor compressing a refrigerant; a condenser condensing the refrigerant compressed by the compressor; an expander expanding the refrigerant condensed by the condenser; a driving motor connected with the compressor and the expander, cooled by the refrigerant having passed through the expander, and including an inlet into which the refrigerant is introduced from the expander, and an outlet from which the refrigerant is discharged to the compressor; a coolant pump connected with the condenser, and supplying coolant for cooling the refrigerant supplied to the condenser; and a heat exchanger connected with the condenser and the coolant pump, receiving the coolant having exchanged heat with the refrigerant through the condenser, and exchanging heat between outside air and the coolant having exchanged the heat through the condenser. Therefore, the driving motor is cooled with evaporation heat of a refrigerant circulated through the cooling circuit comprising the compressor, the condenser, the expander and the driving motor, and led through compression, condensing, expansion and evaporation procedures, and, as a result, the cooling efficiency of the driving motor can be improved.
본 발명은 냉매를 압축하는 압축기; 상기 압축기에서 압축된 냉매를 응축시키는 콘덴서; 상기 콘덴서에서 응축된 냉매를 팽창시키는 팽창기; 상기 압축기 및 상기 팽창기와 연결되고, 상기 팽창기를 거친 냉매에 의해 냉각되며, 상기 팽창기로부터 냉매가 유입되는 유입구와, 상기 압축기로 냉매를 배출하는 배출구가 구비되는 구동모터; 상기 콘덴서와 연결되며, 상기 콘덴서로 공급되는 냉매를 냉각시키기 위한 냉각수를 공급하는 냉각수펌프; 및 상기 콘덴서 및 상기 냉각수펌프와 연결되며, 상기 콘덴서에서 냉매와 열교환된 냉각수가 공급되며, 외부공기와 상기 콘덴서에서 열교환된 냉각수를 열교환하는 열교환기를 포함하는 구동모터 냉각 시스템을 제공한다. 따라서, 압축기, 콘덴서, 팽창기, 구동모터로 구성되는 냉각회로로 순환되며, 압축, 응축, 팽창, 증발 과정을 거치는 냉매의 증발열을 이용하여 구동모터를 냉각시킴으로써 구동모터의 냉각효율을 향상시킬 수 있다.
Drive motor cooling system
구동모터 냉각 시스템
2021-12-21
Patent
Electronic Resource
Korean
IPC: | H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht |