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Improved cold-performance fluidic oscillator

A technology of oscillators and fluids, applied in the field of fluid handling processes and devices, capable of solving problems such as deterioration of characteristics, no longer available, and problems with windshield wipers

Active Publication Date: 2007-12-26
BOWLES FLUIDICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it has also been found that when the temperature of such a liquid continues to drop such that its viscosity increases (eg 25 centipoise), the characteristics of this type of oscillator can deteriorate to such an extent that it no longer provides characteristically sufficient oscillation to A jet that allows its jet to be distributed over a suitable fan angle
This situation is particularly problematic in the application of windscreen wipers utilizing such fluidic oscillators

Method used

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  • Improved cold-performance fluidic oscillator
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  • Improved cold-performance fluidic oscillator

Examples

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Embodiment Construction

[0029] Before explaining at least one embodiment of the present invention in detail, it is to be understood that the application of the present invention is not limited to the detailed construction and illustrated arrangement of parts described below or shown in the accompanying drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways.

[0030] It is also to be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting. For example, the following discussion generally refers to liquid jetting techniques; however, it will be apparent that the inventive concepts described herein are also applicable to the dispensing of other fluids, including gases, liquefied solid particles, and the like.

[0031] The present invention includes a method of forming a fluid oscillator of the type suitable for producing an oscillating fluid jet having a very unique and co...

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Abstract

An ejecting flowing fluid oscillator (2) suitable for generating a fluid drop oscillating ejecting form has: an entrance (12) for pressing fluid, a dynamic nozzle (14) for constructing accelerate pressurization fluid motion, a fluid path (10) allow pressed fluid flowing between the entrance (12) and the dynamic nozzle (14), an interaction chamber (18) attached to the dynamic nozzle (14) and receiving the flowing from the nozzle, an outlet (20) ejecting fluid discharged during through the interaction chamber (18), and a device for increasing flowing instability flowing from the dynamic nozzle (14). In one first optimization embody, the device comprises a projection (4) internal extending from each side of the fluid path (10). In a second optimization embody, the device comprises a step (24), its height is the height of the dynamic nozzle (14) hoisting relative to bottom plate of the interaction chamber (18).

Description

technical field [0001] The present invention relates to fluid treatment processes and devices. In particular, the present invention relates to a fluidic oscillator that can operate at lower temperatures normally associated with higher viscosity fluids. Background technique [0002] Fluid oscillators are well known in the art for their ability to provide a wide range of liquid spray patterns by cyclically deflecting the liquid spray. The operation of most fluid oscillators is characterized by cyclically deflecting fluid jets without the use of mechanical moving parts. Thus, one advantage of fluidic oscillators is that they are not subject to the wear and tear that would adversely affect the reliability and operability of other jetting devices. [0003] Examples of fluidic oscillators can be found in a number of patents, including U.S. Patent Nos. 3,185,166 (Horton & Bowles), 3,563,462 (Bauer), 4,052,002 (Stouffer & Bray), 4,151,955 (Stouffer), 4,157,161 (Bauer), 4,231,519 (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B1/08B60S1/52F15C1/22
CPCF15C1/22B60S1/52
Inventor S・格帕兰G・鲁塞尔
Owner BOWLES FLUIDICS
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