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A system for removing moisture from compressed air in pneumatic brake equipment including an air compressor having an outlet pneumatically connected to an inlet of a cooler. The cooler having an outlet pneumatically connected to a pair of electromagnetic multi-way valves. Each of the valves includes

A system for removing moisture from compressed air in pneumatic brake equipment including an air compressor having an outlet pneumatically connected to an inlet of a cooler. The cooler having an outlet pneumatically connected to a pair of electromagnetic multi-way valves. Each of the valves includes a supply section and an exhaust section. A pair of drying cylinders have inlets selectively pneumatically connectable to the supply and exhaust sections of the respective pair of electromagnetic multi-way valves. An air reservoir has its inlet pneumatically connected to the outlets of the drying cylinders via a respective check valve. A governor is pneumatically connected to the air reservoir for sensing the pressure level in the air reservoir. A control circuit is electrically connected to the pair of electromagnetic multi-way valves and the governor for causing the drying cylinders to switch to the drying and regenerating state at a preset time only when the air compressor is continuously operating for a time longer than the preset time and to remain in the same positions that they were in just prior to the stopping of the air compressor.

대표청구항 ▼

A system for controlling a two-cylinder type of moisture remover in which the drying time limit of the drying cylinders is preset; means for switching each of the drying cylinders to a drying and regenerating state at the preset time only when an air compressor continuously operates for a time longe

A system for controlling a two-cylinder type of moisture remover in which the drying time limit of the drying cylinders is preset; means for switching each of the drying cylinders to a drying and regenerating state at the preset time only when an air compressor continuously operates for a time longer than the preset time; means for maintaining each of the drying cylinders in the condition it was in just prior to the stopping of the air compressor; means for causing both of the drying cylinders to assume the drying state or the regenerating state together when the outlet pressure decreases to a certain pressure after the air compressor has stopped and when a predetermined length of time has passed after stoppage of the air compressor; means for causing the drying cylinders to be switched to a state opposite that of previous operation when the air compressor is again placed in operation; means for feeding moist air from the air compressor from the inlet to the outlet direction of the one drying cylinder to the other drying cylinder; each of the drying cylinders includes absorbent; means for causing a portion of the dried air of one drying cylinder to circulate in counterflow from the outlet to the inlet direction to regenerate the absorbent in the other drying cylinder; and means for alternately repeating the drying and regeneration states of the drying cylinders