公开(公告)号：US20120039702A1

公开(公告)日：2012-02-16

申请号：US13140828

申请日：2009-12-18

Applicant: Nicholas Kenneth Sharp

Inventor： Nicholas Kenneth Sharp

IPC: F01D25/24 ,  F02C6/12

CPC classification number: F04D27/0215 ,  F04D27/023 ,  F04D29/4213 ,  F04D29/685 ,  F05B2220/40 ,  F05D2250/51 ,  F05D2250/52

Abstract: A compressor has a housing defining a gas inlet flow path and a gas outlet and a rotatable impeller wheel between the gas inlet flow path and the gas outlet. The housing has an inner wall defining a surface located in close proximity to radially outer edges of impeller wheel vanes that sweep across said surface as the impeller wheel rotates. At least one opening is provided in the inner wall at the surface. A port is provided in the compressor housing in gas communication with the at least one opening and for diverting gas in a direction away from the gas inlet flow path during relatively low gas flow rate conditions. A gas displacement device such as a pump is disposed outside of the gas inlet flow path and connected to said port, the pump being operable to remove gas selectively through the at least opening and the port in a direction away from said gas inlet flow path.

Abstract translation: 压缩机具有壳体，其在气体入口流动路径和气体出口之间限定气体入口流动路径和气体出口以及可旋转的叶轮。 壳体具有内壁，该内壁限定了靠近叶轮轮叶的径向外边缘的表面，叶轮绕叶轮旋转时横过所述表面。 在表面的内壁中设置至少一个开口。 一个端口设置在压缩机壳体中，与至少一个开口气体连通，并在相对低的气体流量条件下沿远离气体入口流动路径的方向转向气体。 诸如泵的气体置换装置设置在气体入口流动路径的外部并连接到所述端口，所述泵可操作以选择性地通过所述至少开口和端口沿远离所述气体入口流动路径的方向去除气体。