Abstract: The structure type and the working principle of the linear compressor are introduced. The current research status and the development trend of the detail structure, the dynamic characteristic, the control method of this kind of compressor are also summarized. Against the features and the market requirements of the household refrigerator, the key technology to develop the linear compressor is put forth. The coil moving type motor and the magnet moving type motor are two preferable kings of motor. The sensor-less control method is a preference. The recommended train of thought is, through theoretical analysis as well as the experiment, to investigate the influence of the structure parameters on the running dynamic property, establish the prototype plant and the design theory of the control system, and finally, achieve the task of the commercialization.

Key words: Cooling, Energy conservative, Linear compressor, Refrigerator, Resonance technology