|
Abstract: A profile modification method for perfect meshing of
involute wrap of twin-scroll compressor is established. The generation
and characteristics of this modified wrap, general mutual dependence of
modification parameters of wrap head as well as equations of
modification circular arcs are given. An accurate expression for
calculating axial projective area of modified wrap is derived. A method
for calculation of compression chamber volume in different angular
positions of crankshaft is proposed. The influence of every modification
parameters on performance of modified wrap such as compression ratio and
strength etc, is also analyzed. The investigation results show that only
the modification expanding angle f needs to be determined in order to
obtain the shape of modified wrap head and the value of other
modification parameters. When the value of f increases, the compression
ratio decreases and the thickness of modified wrap head also increases,
so that its strength increases, also.
Key words: Scroll compressors Twin-scroll profile Perfect meshing
profile modification Geometric theory
CLC No: TH45
Received 20040526, received in revised
form 20040930
|