Spout Apparatus Vortex Generation Stability
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Solution Overview
Problem
Spout apparatuses with elastically deformable soft members for vortex generation face issues with expansion deformation due to internal pressure, leading to changes in oscillation amplitude and frequency, which affect the production of desired Karman vortices and water spouting performance, especially in regions with high calcium content where scale formation occurs.
Innovation Solution
Incorporating a deformation limiting portion on the outer circumferential portion of the vortex generating passage to counteract internal pressure and maintain specified dimensions between the obstacle and inner wall surfaces, preventing expansion and ensuring consistent vortex generation, even when the spout port is formed of a soft member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the vortex generating portion is formed of an elastically deformable soft member, then scale can be easily removed by deformation, but the inner wall surface expands and distorts under internal pressure, causing the desired vortex to cease to occur
Solution Approach 1:
The spout port passage is divided into two distinct portions: a vortex generating portion formed of a soft member for scale removal, and a spout port passage portion formed of a hard member for maintaining dimensional stability. This segmentation allows each portion to fulfill its specific function without interfering with the other.
Solution Approach 2:
Different portions of the spout port passage are assigned different material properties: the vortex generating portion uses a soft member for ease of scale removal, while the spout port passage portion uses a hard member for maintaining precise gap dimensions. This local differentiation of material properties resolves the contradiction between scale removal ease and vortex generation stability.
2Ease of operation
If the spout port portion is formed of an elastically deformable soft member, then a user can manipulate and deform the spout port passage to remove scale, but the vortex generating portion expands and distorts when water is supplied, changing the gap dimensions
Solution Approach 1:
The spout port passage is segmented into a vortex generating portion and a spout port passage portion, with each portion made of different materials having different deformation characteristics. This allows independent optimization of each section.
Solution Approach 2:
The vortex generating portion is made of a soft member that can be deformed for scale removal, while the spout port passage portion is made of a hard member that maintains precise gap dimensions. This local quality differentiation allows the system to simultaneously achieve ease of scale removal and manufacturing precision.
3Adaptability or versatility
If the inner wall surface of the vortex generating portion expands and distorts, then the gap dimensions between the obstacle and surrounding wall surfaces widen, but the desired vortex cannot be produced
Solution Approach 1:
The spout port passage is divided into two portions with different material properties. The vortex generating portion can be deformed for scale removal, while the spout port passage portion maintains stable dimensions to ensure consistent vortex generation.
Solution Approach 2:
Different portions of the spout port passage have different material characteristics: the vortex generating portion is soft and deformable for adaptability in scale removal, while the spout port passage portion is hard and stable for maintaining the precise gap dimensions needed for consistent vortex generation.
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
This solution allows for effective removal of scale and maintenance of desired spouting performance by preventing expansion deformation, ensuring a stable Karman vortex and durable spouting operation without movable parts, thus providing a low-cost, high-durability spouting apparatus.
Implementation Method 1
the inner wall surface of the vortex generating portion expands and distorts... when the spout port portion is formed of an elastically deformable soft member
Implementation Method 2
a fluid which has flowed into a antechamber 110 from an intake hole 114 first collides with an obstacle 116 having a triangular cross section... Karman vortices are alternately formed on the upper and lower sides of the obstacle 116, resulting in a vortex street
Data Source
Figure 1~2
Figure 3~4
Figure 5A~6
AI summary
To provide a spout apparatus whereby expansion and deformation of the inner wall surface of the vortex generating portion such that a desired Karman vortex cannot be generated are prevented, even when the port portion is formed of an elastically deformable soft member. A spout apparatus for discharging hot or cold water with reciprocal motion, having a spout apparatus body and a vortex generating passage; whereby the oscillating element has a supply passage, a vortex generating passage, and a spout port passage, and the spout port passage is formed by an elastically deformable soft member, and is attached to the spout apparatus body so that a user can manipulate and deform the spout port passage, and the vortex generating passage is formed so as not to expand and deform even if internal pressure rises due to the supply of hot or cold water from the supply passage.