Laminar flow element
US4576204A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1984 |
| Grant date | Mar 18, 1986 |
| Priority date | — |
| Expiry date | Mar 9, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15D1/065
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A laminar flow element for use in a cylindrical fluid flow passage for restricting the flow of fluid through that passage to a constant volume flow rate. The element comprises a body portion having a cylindrical peripheral surface of predetermined length and predetermined diameter, with the surface defining with the passage an annular, tubular fluid passageway. Locating portions are provided extending from the element for engagement with at least one surface in the cylindrical passage for maintaining the peripheral surface concentrically disposed within the cylindrical passage. The length and diameter of the element are dimensioned so that the flow is laminar under all operating conditions, and therefore the volume rate of flow of fluid through the passage is linearly proportional to the pressure drop along the annular passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.