Ultrasonic Waveguide Layout Using Dual Reflection Surfaces
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Solution Overview
Problem
Existing ultrasonic wave generating devices require the ultrasonic wave generating source to be arranged frontward along the axial direction, which may be undesirable in certain circumstances, necessitating an alternative configuration.
Innovation Solution
An ultrasonic wave generating device with an ultrasonic wave generating source arranged such that its radiation surface is joined to a joining surface of an ultrasonic wave focusing part, where the first reflection surface and second reflection surface are aligned in a specific orthogonal direction, allowing ultrasonic waves to be reflected as plane waves and introduced into a waveguide.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the ultrasonic wave generating source is arranged frontward along the axial direction, then the ultrasonic waves can be generated and transmitted efficiently, but the device size increases and the arrangement may be unpreferable in certain circumstances
Solution Approach 1:
The patent changes the arrangement dimension of the ultrasonic wave generating source from the axial direction to a direction orthogonal to the axial direction. The radiation surface of the generating source is arranged to face the first reflection surface, with the source positioned at the side of the joining surface in a direction orthogonal to the front-rear direction. This dimensional change allows efficient ultrasonic wave transmission while reducing the device's axial length.
2Volume of moving object
If the ultrasonic wave generating source is arranged in a compact configuration, then the device size is reduced, but the ultrasonic wave transmission efficiency may be compromised
Solution Approach 1:
The patent divides the ultrasonic wave transmission path into distinct functional segments: the ultrasonic wave generating source, the first reflection surface, the second reflection surface, and the waveguide. This segmentation allows each component to be optimized independently for both compactness and transmission efficiency. The generating source is positioned orthogonally to the axial direction, while the reflection surfaces and waveguide maintain efficient acoustic coupling.
Solution Approach 2:
The patent introduces reflection surfaces as intermediary elements between the ultrasonic wave generating source and the waveguide. These reflection surfaces redirect the ultrasonic waves from the orthogonal arrangement of the generating source into the axial direction of the waveguide, enabling efficient transmission despite the compact orthogonal configuration of the source.
3Productivity
If the first reflection surface and second reflection surface are arranged to reflect ultrasonic waves as plane waves, then the ultrasonic waves can be introduced efficiently into the waveguide, but the device complexity increases
Solution Approach 1:
The patent employs curved reflection surfaces (first and second reflection surfaces) that are configured with specific focal points. These curved surfaces reflect ultrasonic waves as plane waves by utilizing spherical or paraboloidal geometry, where the focal points are positioned to ensure that waves reflected from both surfaces combine to form plane wavefronts that efficiently couple into the waveguide.
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 configuration enables efficient transmission of ultrasonic waves over a wide range with reduced energy loss and allows for a more compact device design by aligning the ultrasonic wave generating source's width direction orthogonally to the first direction, thereby reducing the device's size.
Implementation Method 1
a first reflector that reflects at a first reflection surface thereof ultrasonic waves generated by the ultrasonic wave generating source
Implementation Method 2
a second reflector that reflects at a second reflection surface thereof the ultrasonic waves reflected by the first reflection surface
Implementation Method 3
an ultrasonic wave generating source that generates ultrasonic waves
Data Source
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AI summary
An ultrasonic wave generating device (10) includes an ultrasonic wave generating source (11), an ultrasonic wave focusing part (12), and a waveguide (13). The ultrasonic wave focusing part (12) has a first reflection surface (21) and a second reflection surface (22). The first reflection surface (21) reflects ultrasonic waves generated by the ultrasonic wave generating source (11). The second reflection surface (22) reflects the ultrasonic waves reflected by the first reflection surface (21). The ultrasonic waves reflected by the second reflection surface (22) are reflected as plane waves and introduced into an introduction part (25) of the waveguide (13). The ultrasonic wave generating source (11) has a radiation surface (15). The ultrasonic wave focusing part (12) has a joining surface (20) joined to the radiation surface (15). The introduction part (25) and the second reflection surface (22) are arranged to be aligned in a front-rear direction. The joining surface (20) is arranged on one side in a first direction, which is orthogonal to the front-rear direction. The first reflection surface (21) is arranged on an other side in the first direction relative to the joining surface (20).