电器控制系统与电机是制冷设备中最容易出现问题的部分。本书从最基础的电路知识入手，介绍电冰箱，冷藏柜，窗式空调，汽车制冷，小型冷库等制冷系统的电路原理。-Electric motor control system and refrigeration equipment are the most vulnerable part of the problem. This book from the most basic knowledge of the circuit to start, introduction of refrigerators, freezers, window air-conditioning, auto refrigeration, cold storage, such as small-scale refrigeration system circuit.