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1.组成及原理(1)组成工程机械空调系统可分为制冷系统和电控系统2个子系统。制冷系统主要由压缩机、冷凝器、电子扇、干燥过滤器、膨胀阀、蒸发器、鼓风机、循环管路、制冷剂、润滑油等组成,如图1所示。电控系统主要由蓄电池、点火开关、保险丝、空调开关、电阻器、温控开关、压力开关、压缩机、电磁离合器、继电器等组成,如图2所示。(2)主要部件功用压缩机工程机械空调制冷系统常用斜盘式压缩机。其功用是:一方面维持制冷剂在系统中的流动;另一方面对气化后的制冷剂加压形成液态制冷剂,以便在冷凝器中减压后放热。
1. Composition and principle (1) The composition of construction machinery air conditioning system can be divided into refrigeration system and electronic control system 2 subsystems. The refrigeration system mainly consists of compressors, condensers, electronic fans, dry filters, expansion valves, evaporators, blowers, circulation lines, refrigerants, lubricants, etc., as shown in Figure 1. The electric control system is mainly composed of batteries, ignition switches, fuses, air conditioning switches, resistors, temperature control switches, pressure switches, compressors, electromagnetic clutches, relays and other components, as shown in Figure 2. (2) the main components of the function compressor construction machinery air-conditioning refrigeration system commonly used swash plate type compressor. Its function is: on the one hand to maintain the flow of refrigerant in the system; the other on the gasification of the refrigerant pressure to form a liquid refrigerant to decompression in the condenser after the heat.