| 摘要 |
A single-screw compressor which leaks little gas to be compressed and is low in production cost, and which comprises a screw rotor (1) enclosed in a casing and having six grooves (2, 2, ...), and a gate rotor (4) having 12 teeth (5, 5, ...). Since the number of grooves (2) of the screw rotor, six, and the number of teeth (5), 12, have common divisors, a specified tooth (5) only meshes a groove (2) and a groove (2)-to-tooth (5) meshing combination is divided into six groups. Dimension precision is controlled so that mutually meshing grooves (2) and teeth (5) have proper clearances in each of the groups. Since producing grooves (2) and teeth (5) with dimension precision controlled for each group is easier than producing them with dimension precision controlled all at the same time as conventionally done, this single-screw compressor is less expensive to produce. |
