Patent ID: 6050507
Filing Date: 2000-04-18
Classification: F02B,F02M,Y02T

Abstract:
An orifice plate composed of at least one metallic material, comprising:an upper functional region having at least one inlet orifice;a lower functional region having at least one outlet orifice; anda center functional region having at least one channel and being positioned between the upper functional region and the lower functional region, the at least one channel facilitating a fluid to completely flow from the at least one inlet orifice to the at least one outlet orifice,wherein the upper, lower and center functional regions form a one-piece unit,wherein the at least one channel has an entrance cross-sectional surface area and an exit cross-sectional surface area, the entrance cross-sectional surface area being a product of, on the one hand, at least one circumference of the at least one inlet orifice and, on the other hand, a height of the at least one channel transverse to a cross-section of the at least one inlet orifice, the exit cross-sectional surface area being a product of, on the one hand, at least one circumference of the at least one outlet orifice and, on the other hand, a height of the at least one channel transverse to a cross-section of the at least one outlet orifice, andwherein the entrance cross-sectional surface area is larger than the exit cross-sectional surface area.