AIR COMPRESSION DEVICE FOR RAILWAY VEHICLE

摘要

Provided is an air compression device which is for a railway vehicle, and wherein an increase in the size and complexity of the device have been suppressed, enabling an increase in costs to be suppressed, and which is capable of avoiding oil emulsification. A control device (30) controls an operating state by means of either a normal operating mode or a warm-air operating mode on the basis of detection results from a temperature sensor (26) which detects the oil temperature in an oil recovery unit (21), and a pressure sensor (27) which detects the air pressure in an air accumulator (19) which stores compressed air. In the normal operating mode, when the pressure amount detected by the pressure sensor (27) is less than a first pressure amount, a compressor (1) is operated, and when the detected pressure amount is equal to or greater than a high-pressure second pressure amount, the operation of the compressor (12) is stopped. In the warm-air operating mode, when the temperature detected by the temperature sensor (26) is less than a specified temperature, and the detected pressure amount is at least the second pressure amount, the compressor (12) is operated, an exhaust valve (29), which is capable of emitting compressed air that has passed through the oil recovery unit (21) to the outside, is operated and compressed air is emitted to the outside.