Fluidic Oscillator Branch Flow Path for Multiple Pulsating Jets
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Solution Overview
Problem
Existing fluidic oscillators can only generate a single oscillating fluid jet, requiring multiple oscillators for multiple jets, which is disadvantageous for downsizing and prone to failures due to moving parts.
Innovation Solution
A housing equipment device with a fluidic oscillator, a branch flow path with multiple outlets, and transmission flow paths that discharge pulsating flows through multiple outlets, ensuring the sum of the cross-sectional areas of the downstream fluid passages is greater than or equal to the discharge port area, eliminating the need for multiple oscillators and moving parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple fluidic oscillators are provided to generate multiple fluid jets, then the number of fluid jets increases, but the device size increases and complexity increases
Solution Approach 1:
The single fluidic oscillator's discharge port is divided into multiple discharge ports, and the single fluid passage is segmented into multiple fluid passages. This segmentation allows one oscillator to generate multiple fluid jets by distributing the flow through separate passages to different outlets, resolving the contradiction between jet quantity and device size.
Solution Approach 2:
Multiple fluid passages and discharge ports are merged into a single fluidic oscillator structure. Instead of using multiple separate oscillators, the patent combines multiple flow paths within one oscillator body, allowing multiple jets to be generated from a single oscillating element, thus reducing device size while maintaining multiple jet output.
2Quantity of substance
If multiple fluidic oscillators are provided to generate multiple fluid jets, then the number of fluid jets increases, but the device complexity increases
Solution Approach 1:
The fluid passage system is segmented into multiple independent passages within the single oscillator, each leading to a separate outlet. This internal segmentation allows multiple jet generation without requiring multiple oscillator units, thereby reducing overall device complexity while achieving the desired number of jets.
Solution Approach 2:
The single fluidic oscillator is designed to perform multiple functions simultaneously - generating multiple oscillating fluid jets through its multiple discharge ports. This multi-functionality eliminates the need for multiple separate oscillators, reducing device complexity while maintaining the capability to produce multiple jets.
3Speed
If the cross-sectional area of downstream fluid passages is reduced, then the fluid flow velocity increases, but the pulsating flow characteristics are compromised
Solution Approach 1:
Different sections of the fluid passages have different cross-sectional areas optimized for their specific functions. The passages are designed with varying local dimensions - narrower sections for velocity enhancement and wider sections for maintaining pulsating flow characteristics - allowing both high speed and reliable pulsating flow to coexist in different locations of the same system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient downsizing by generating multiple pulsating flows from a single fluidic oscillator, reducing the risk of mechanical failures, and providing effective cleaning or massage applications.
Implementation Method 1
an interaction chamber that receives the flow from the nozzles, and a means for increasing the instability of the flow from the power nozzles
Implementation Method 2
The fluidic oscillator described in the Japanese Translation of PCT International Application Publication No. 2008-517762 can generate a single oscillating fluid jet
Data Source
AI summary
A housing equipment device includes a fluidic oscillator, a branch flow path connected to a discharge port of the fluidic oscillator and having multiple branch outlets, and multiple flow path outlets that each are connected to one of the multiple branch outlets and through which a fluid from each of the branch outlets is discharged to open space. Pulsating flows are discharged through the flow path outlets, and the sum of the cross-sectional areas of the narrowest portions in fluid passages located downstream of the discharge port of the fluidic oscillator is greater than or equal to the cross-sectional area of the discharge port of the fluidic oscillator.