LINEAR COMPRESSOR HAVING PISTON ROD WITH PRE-COMPRESSED SPRING, AND REFRIGERATING DEVICE Russian patent published in 2012 - IPC F04B35/04 

FIELD: machine building.

SUBSTANCE: linear compressor (1) includes housing (2) of piston and reciprocating piston (4) of compressor, which moves in it along axis (3). Compressor piston (4) is connected through rod (5) to drive (6) for reciprocating movement. Rod (5) includes pre-compressed spring (7), mainly helical spring; at that, spring (7) pre-compression is more than tension created with drive (6) in rod (5). Also, invention refers to refrigerating device and to product cooling or freezing method; at that, refrigerating device includes linear compressor (1). Invention differs by the fact that due to design of pre-compressed spring there can be achieved especially accurate ratio of axial rigidity to transverse rigidity of connection between drive (6) and piston (4) of compressor, and thus, various compressors designs with various power values can be realised by means of one and the same assembly.

EFFECT: reducing not only piston rod deviation, but also the quantity of required fasteners on the side of piston and on the side of drive.

4 dwg, 8 cl