Nozzles and methods of mixing fluid flows

A nozzle and fluid technology, applied in the combustion method, gas and gas/vapor mixing, injection device, etc., can solve the problems of changing the properties of the atomized liquid, unable to provide, etc., to achieve the effect of clean combustion

Active Publication Date: 2018-07-31
明尼苏达州大学董事会
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the onset of the dispersed flow mechanism may depend on the specific geometry of the nozzle components and may not provide the ability to selectively change the properties of the atomized liquid

Method used

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  • Nozzles and methods of mixing fluid flows
  • Nozzles and methods of mixing fluid flows
  • Nozzles and methods of mixing fluid flows

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Embodiment Construction

[0022] Aspects of the present disclosure relate to nozzles or nozzle assemblies and related methods of use wherein a first fluid flow is directed to a second fluid flow in a direction opposite to the second flow direction, the two fluid flows are mixed to produce a mixed fluid flow . In some non-limiting embodiments, the nozzle assemblies of the present disclosure and associated methods of use entail the generation of an atomized liquid-gas two-phase flow comprising droplets of liquid dispersed within a gas. Optionally, the nozzle assemblies of the present disclosure provide for generating a pulsed fluid flow (eg, a pulsed atomized flow) having a selected pulse frequency.

[0023] Figure 1A One embodiment of a nozzle assembly 100 is shown in accordance with the principles of the present disclosure. The nozzle assembly (or "backflow nozzle") includes an inner tube 102 and an outer shell 104 . Details of the various components are described below. In general, however, the in...

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PUM

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Abstract

The invention provides a nozzle assembly including an inner tube and an outer housing. The inner tube terminates at an outlet end and defines a first flow passage. The first flow passage directs firstfluid flow to the outlet end in a primary flow direction. The outer housing includes a tubular side wall and an end wall. The tubular side wall defines a central axis. The end wall defines an exit orifice and an interior guide structure. The outlet end is axially aligned with the exit orifice. A second flow passage is established between the inner tube and the outer housing. The interior guide structure is configured and arranged relative to the outlet end to direct at least a portion of a second fluid flow from the second flow passage toward the outlet end in a direction initially opposite the primary flow direction for generating mixed fluid flow.

Description

Background technique [0001] Nozzles, such as atomizer nozzles, are sometimes used to atomize a stream of liquid. Atomized liquid flows (eg, also sometimes referred to as aerosolized liquid flows, such as sprays) include droplets of a liquid dispersed in a gas, such as air. For example, a liquid stream is atomized by directing a gas stream into a liquid stream to create droplets. In some examples, liquid fuels may be atomized for use in gas turbine combustors, boilers, and the like. In other examples, liquids, such as paint or other coatings, may be atomized for spray applications, such as paint application. Liquid pesticides, herbicides, etc. can be atomized, eg for spraying. [0002] As another example, internal combustion engines rely on rapid atomization of liquid fuel prior to combustion. In general, the atomization of a liquid spray depends on its fluid properties, density, viscosity and surface tension, as well as the inertial force generated by the delivery device. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B1/34B05B1/00B01F23/10
CPCB05B1/08B05B7/0475F23D11/102F23D11/38F23D14/62B05B7/10
Inventor A·霍克西P·J·斯特里科夫斯基V·斯里尼瓦桑
Owner 明尼苏达州大学董事会
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