Device for mixing two fluids having different temperatures
First Claim
1. In a device for mixing two fluids having different temperatures, said device including a connecting branch extending essentially radially into a primary pipe having a longitudinal axis and through which a first fluid is supplied from a secondary pipe through which a second fluid is supplied, said first fluid passing along the outside of said connecting branch, said connecting branch having at least one nozzle-shaped aperture through which said second fluid can be conducted and mixed with said fluid, said connecting branch having at least one channel, said channel having an inlet and an outlet, said channel extending transversely of said connecting branch and parallel relative to said longitudinal axis of said primary pipe and through which part of said first fluid may flow in a central partial flow spaced from a wall of said primary pipe, and said nozzle-shaped apertures being positioned adjacent and surrounding said channel, thereby providing mixing of the second fluid in the first fluid in an area which is centrally positioned or spaced from said wall of said primary pipe, the improvement wherein from a cross-sectional area of said inlet of said channel is about 2 to about 8 times larger than a cross sectional area that of said outlet, said channel decreasing in cross-sectional area from said inlet end to said outlet for increasing the speed of said first fluid at said outlet such that said first fluid entrains the surrounding flow of said second fluid through said nozzle-shaped apertures, whereby radial outward flow of said second fluid from said device is substantially reduced.
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Accused Products
Abstract
Two fluids having different temperatures are to be mixed while supplying one fluid (A) through a main pipe (1) and conducting the other fluid (B) from a secondary pipe (2) into the main pipe. A mixing device (6) comprises a connecting branch which extends essentially radially into the main pipe (1) from the secondary pipe (2) and along whose outside the first fluid (A) may pass and which is formed with at least one nozzle-shaped aperture through which the second fluid (B) can be conducted into and mixed with the passing first fluid. The connecting branch comprises at least one through channel (13) extending transversely of the connecting branch and suitably in parallel with the longitudinal extent of the main pipe (1) and through which part of the first fluid can pass in a central partial flow. The inlet end of the channel (13) has a larger cross-sectional area than the outlet end, thereby giving the first fluid (A) an increased flow rate at the outlet end, the nozzle-shaped aperture being located adjacent this channel. In this manner, the second fluid is intimately mixed with the first in a centrally positioned area, while minimising every inclination of the second fluid to flow from the mixing device directly or abruptly, radially outwards towards the peripherally positioned main pipe (3).
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Citations
20 Claims
- 1. In a device for mixing two fluids having different temperatures, said device including a connecting branch extending essentially radially into a primary pipe having a longitudinal axis and through which a first fluid is supplied from a secondary pipe through which a second fluid is supplied, said first fluid passing along the outside of said connecting branch, said connecting branch having at least one nozzle-shaped aperture through which said second fluid can be conducted and mixed with said fluid, said connecting branch having at least one channel, said channel having an inlet and an outlet, said channel extending transversely of said connecting branch and parallel relative to said longitudinal axis of said primary pipe and through which part of said first fluid may flow in a central partial flow spaced from a wall of said primary pipe, and said nozzle-shaped apertures being positioned adjacent and surrounding said channel, thereby providing mixing of the second fluid in the first fluid in an area which is centrally positioned or spaced from said wall of said primary pipe, the improvement wherein from a cross-sectional area of said inlet of said channel is about 2 to about 8 times larger than a cross sectional area that of said outlet, said channel decreasing in cross-sectional area from said inlet end to said outlet for increasing the speed of said first fluid at said outlet such that said first fluid entrains the surrounding flow of said second fluid through said nozzle-shaped apertures, whereby radial outward flow of said second fluid from said device is substantially reduced.
Specification