Cooling device
A technology of cooling device and air cooling device, applied in the field of rail transit, can solve the problems of low life, high noise of heat dissipation cooling device, complex structure, etc., and achieve the effect of reducing noise, ensuring comfort, and reducing volume
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[0052] see Figure 1-8 , a cooling device, comprising a water cooling circuit, an oil cooling circuit and an air cooling device, the water cooling circuit is used for cooling the reactor and the traction converter, the oil cooling circuit is used for cooling the main transformer, the The air cooling device is used for cooling the cooling medium in the water cooling circuit and oil cooling circuit;
[0053] The air-cooling device includes at least two cooling fans 1 arranged in parallel. The cooling fan 1 includes a motor 1.1 and a fan impeller 1.2. The fan impeller 1.2 is arranged on the output shaft of the motor 1.1 to be driven by the motor 1.1. Rotation; the fan impeller is a sawtooth impeller, wherein the ratio of the tooth width T to the tooth height H is 0.25≤T / H≤0.5, see details Image 6 (a) and Image 6 (b).
[0054] see Figure 5 , the output shaft end of the motor 1.1 can be detachably provided with a front end cover 1.10, the front end cover and the output shaft...
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