Ventilating equipment for railway rolling stock and operating me

Ventilation – Vehicle – Having automatic control means

Patent

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Details

454105, B61D 2700

Patent

active

051374900

ABSTRACT:
Ventilating equipment for railway rolling stock including a low-pressure supply air blower, a high-pressure supply air blower, a low-pressure exhaust air blower, and a high-pressure exhaust air blower. This ventilating equipment ventilates car interior during travel of a train outside of tunnels by the low-pressure supply air blower and the low-pressure exhaust air blower, and also ventilates the car interior during travel in tunnels by the high-pressure supply air blower and the high-pressure exhaust air blower. The high-pressure supply air blower and the high-pressure exhaust air blower produce a higher discharge pressure than a changing external pressure during a high-speed travel in tunnels, thereby preventing the propagation of an influence of the changing external pressure into the car interior. Furthermore, the ventilating equipment is capable of preventing an increase in power consumption of the entire ventilating equipment by interlocking, or changing over, between the high-pressure supply air blower and the high-pressure exhaust air blower and the low-pressure supply air blower and the low-pressure exhaust air blower, and is also capable of continuous ventilation of the car interior during travel in tunnels.

REFERENCES:
patent: 3563155 (1971-02-01), Ishizawa

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