Patent ID: 6059549
Filing Date: 2000-05-09
Classification: F04C

Abstract:
A high-low pressure chamber sealing arrangement comprising:a compressor housing defining a holding space;a fixed volute mounted inside said compressor housing, said fixed volute having a spiral blade and a center outlet;a rotary volute mounted inside said compressor housing, said rotary volute having a spiral blade defining with the spiral blade of said fixed volute a plurality of compression chambers, said rotary volute being forced by an external force to revolve around said fixed volute, causing a working flow of air to be sucked into said compression chambers and compressed into a high pressure status and then driven out of the center outlet on said fixed volute;a partition block mounted inside said compressor housing and dividing the holding space of said compressor housing into a high pressure chamber at a bottom side and a low pressure chamber at a top side, said partition block having a through hole in communication between said high pressure chamber and said low pressure chamber; wherein:a spring element is mounted on said fixed volute at a top side, and a seal ring is supported on said springy element and forced upwards by said spring element into close contact with said partition block at a bottom side around the through hole on said partition block.