| 摘要 |
FIELD: transport. ^ SUBSTANCE: invention relates to passenger air ventilation and conditioning equipment. Proposed system consists of external air intake grid, air filter, supply fan, water and electric heat exchanger, and air supply duct with outlets all along the car length. Besides, vent system comprises additionally refrigerator, exhaust air fan and duct, external grid for withdrawn air, condensate collector and condensate discharge pipeline. Refrigerator represents a single-piece unit made up of heat-and-noise isolated housing divided into two compartments. First compartment houses air cooler and supply fan. Note here that air cooler communicated with air filter via air line. Second compartment houses compressor, four-way valve, condenser intercommunicated via pipelines with control and safety valves, and exhaust fan. Suction chamber of suction fan is communicated with exhaust air duct, while fan pressure chamber is communicated with withdrawn air grid. Condensate collector is arranged in car body bottom, in compartment accommodating the compressor, to allow condensate collector inner space to be communicated with compartment housing the air cooler. Condensate collector inner space accommodates pressure duct representing a flat coil. ^ EFFECT: cooling and heating of suction air, maintenance of optimum air parametres. ^ 1 dwg |
