Helmholtz Resonator Cavity Integration in Sheet Storage
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Solution Overview
Problem
The use of a Helmholtz resonator in sheet material storage devices for image forming apparatuses increases the size of the device due to the required cavity volume, leading to a larger sheet feeding device.
Innovation Solution
Integrating at least a part of the cavity of the Helmholtz resonator into the housing space structure of the sheet material storage, allowing for a more compact design by optimizing the space required for the acoustic device, and positioning it close to the sound source to enhance sound absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an acoustic device using a Helmholtz resonator is added to the sheet material storage, then sound absorption performance is improved, but the device size increases due to the required cavity volume
Solution Approach 1:
The patent merges the acoustic device with the sheet material storage by forming the Helmholtz resonator cavity within the housing space structure of the storage device. The cavity is integrated into the bottom plate or side walls of the housing, combining noise reduction functionality with the existing storage structure without requiring additional external space.
Solution Approach 2:
The Helmholtz resonator cavity is nested within the housing space of the sheet material storage. The cavity is formed as an internal void space within the housing structure itself, utilizing the existing structural volume to accommodate the acoustic resonance chamber without increasing the external dimensions of the storage device.
2Volume of stationary object
If the cavity volume is reduced to downsize the device, then device size is reduced, but sound absorption performance deteriorates
Solution Approach 1:
The patent optimizes the local geometry of the Helmholtz resonator cavity to achieve effective noise absorption with minimal volume. By carefully designing the cavity shape, neck dimensions, and positioning within the housing structure, the acoustic performance is maximized within the constrained space available in the sheet material storage.
Solution Approach 2:
The patent adjusts the geometric parameters of the Helmholtz resonator (cavity volume, neck area, neck length) to optimize sound absorption performance within the limited space of the sheet material storage. By changing these parameters, the resonant frequency and absorption efficiency are tuned to target the specific noise frequencies generated during sheet feeding operations.
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 approach enables the downsizing of the sheet feeding device while maintaining effective sound absorption, reducing noise and minimizing the device's overall size without compromising sound absorption performance.
Implementation Method 1
an acoustic device that uses a Helmholtz resonator. At least a part of a cavity of the Helmholtz resonator is formed in the housing space structure
Implementation Method 2
noise in a sheet feeding operation is absorbed by the acoustic member to reduce the noise
Data Source
AI summary
A sheet material storage includes a housing space structure that forms a housing space to house a sheet material and an acoustic device that uses a Helmholtz resonator. At least a part of a cavity of the Helmholtz resonator is formed in the housing space structure.