Motor cooling device and cooling method

Details Motor cooling device and cooling method Motor cooling device and cooling method

2005-11-28

2008-12-09

Lam, Thanh (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S052000, C310S054000

Reexamination Certificate

active

07462963

ABSTRACT:
A motor cooling apparatus and method to auto-circulate coolant to reduce the weight and size of the cooling system. The cooling apparatus includes a coolant path disposed at hot areas of the motor. A reservoir tank is located above the coolant path and gravity feeds coolant to the coolant path. Coolant in the vapor phase discharged from the coolant path is liquefied by a condenser located in a coolant return path. Coolant in the liquid phase is expelled to the reservoir tank under pressure of the vapor-phase coolant in the coolant path to provide for the auto-circulating coolant. Expansion pressure of the coolant supplied by an motor inverter can further increase the pressure of the coolant in the discharging coolant path to improve coolant circulation efficiency to prevent dry out in the coolant path.

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patent: 2001-12352 (2001-01-01), None

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