Patent ID: 9645583
Date: 2017-05-09
CPC Classifications: G05D,Y10T

Claim:
1. A fluid flux regulating unit, comprising: a casing defining: a valve comprising a movable valve part comprising a tubular wall defining an inner passage along an axial length of the tubular wall, said movable valve part comprising at least one fluid pressure balancing means, said at least one fluid pressure balancing means comprising a tapered surface disposed on the tubular wall such that the tapered surface is surrounding the inner passage; wherein said fluid pressure balancing means comprises a surface disposed in the internal space, which is in fluid communication with said first fluid port via the fluid passage, wherein at least part of the surface has a surface normal vector in parallel to the moving direction of said movable valve part and is configured to be pressure balanced; wherein the first fluid port is in fluid communication with the second fluid port via the inner passage, and the first fluid port is separately in fluid communication with the internal space via the fluid passage; wherein said tapered surface is closer to said first fluid port than said part of the surface having a surface normal vector in parallel to the moving direction of said movable valve part is to said first fluid port; and wherein the tapered surface is fluidly connected to the first fluid port independently of the position of the movable valve part.