前言铁路客车空调装置一般都设计成单元型式,即把所有零部件都装在一个小而轻的箱子里,根据客车结构特点和其他设备的布置,安装在车顶上、地板上或地板下。在单元式空调装置中,根据所需要的空调制冷量可使用一台或二台空调机组。每一节车上都装有一个风道,并且,每一调节空气用的出风口格栅都配备有适当流量的调节门。由于格栅的出风调节很方便,所以客车内经常保持恒温。日立公司一种体积小、重量轻、制冷能 Preface Rail passenger car air conditioning units are generally designed as a unit type, that is, all the parts are housed in a small and light box, according to the structural characteristics of buses and other equipment layout, mounted on the roof, floor or under the floor. In the unit air conditioner, one or two air-conditioning units can be used depending on the amount of air-conditioning capacity required. Each section of the car is equipped with an air duct, and each of the conditioned air outlet grilles is equipped with a suitable flow control door. As the grille air conditioning is very convenient, so the bus often maintain a constant temperature. Hitachi a small size, light weight, refrigeration energy