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Abstract: The
condition of a pair of circle involutes being used as meshing profile
for a scroll wrap is proposed. The wrap profile modification using
circle involute curve is established, and by this method the perfect
meshing profile can be obtained. The generation of this modified wrap is
investigated, in addition, the variation relationship of modified wrap
parameters, the equations of modification profile as well as the
coordinates of important design points are derived. The effects of
profile modification on the modified wrap’s performances are discussed
in detailed when the wrap parameters are changed. Compared with the wrap
modified by using twin-circular arcs, this modified wrap improves wrap’s
meshing angle 10°~25°, increases wrap’s strengthened angle 12°~30°, so
that the pressure ratio and wrap head strength are improved. This
modification method, by which the modified wrap has the higher
performance, is more perfect than the present profile modification
method. The study results can be applied in the calculation of profile
modification directly.
Key words: Scroll
compressor Circle involute Wrap profile modification
CLC No: TH45
高等学校博士学科类专项科研基金资助项目(20050731002). Received
20051015,
received in revised form 20060220
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