Angled Four-Spring Support Structure for Blower Vibration Isolation
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Solution Overview
Problem
Existing elastic support structures, including those using springs, fail to effectively suppress vibration propagation from blower systems, particularly along the vibration axis, and can cause the blower to swing excessively during transportation due to the orientation of springs.
Innovation Solution
An elastic support structure employing four springs positioned at angles greater than 45 degrees relative to the vibration axis, forming a virtual quadrangle, to effectively suppress vibration propagation and reduce swinging, while ensuring the springs' resonance frequencies are lower than the blower's operational frequency to prevent resonance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If springs are positioned vertically or at small angles to the vibration axis, then the structure is simple and easy to manufacture, but vibration propagation along the vibration axis is not effectively suppressed
Solution Approach 1:
The patent applies asymmetry by positioning the four springs at specific asymmetric angles (45 degrees or more) relative to the vibration axis rather than symmetrically or vertically. This asymmetric angular arrangement creates unfavorable transmission paths for vibration along the vibration axis while maintaining structural stability, thereby suppressing vibration propagation without excessive complexity in manufacture.
Solution Approach 2:
The patent transitions from one-dimensional vertical spring positioning to two-dimensional angular positioning. By arranging springs at 45 degrees or more off the vibration axis in a planar configuration forming a virtual quadrangle, the solution addresses vibration suppression in multiple spatial dimensions, effectively blocking vibration transmission paths that would otherwise propagate directly along the vibration axis.
2Volume of moving object
If springs extend in directions close to the vibration axis, then the suspension structure is compact, but vibration propagation along the vibration axis cannot be suppressed
Solution Approach 1:
The patent employs asymmetric angular positioning of springs at 45 degrees or more relative to the vibration axis. This asymmetric arrangement optimizes the spatial configuration to block vibration transmission paths along the vibration axis while maintaining a compact overall suspension structure through the quadrangular arrangement of the four springs.
Solution Approach 2:
The solution moves from one-dimensional alignment with the vibration axis to two-dimensional angular distribution. By positioning springs at oblique angles in a planar quadrangle configuration, the structure achieves compactness while creating unfavorable transmission paths for vibration along the vibration axis through multi-dimensional spatial arrangement.
3Object-affected harmful factors
If springs are positioned at angles greater than 45 degrees from the vibration axis, then vibration propagation is suppressed, but the spring configuration becomes more complex
Solution Approach 1:
The patent segments the vibration suppression function into four separate springs positioned at different angular locations. Each spring independently contributes to blocking vibration transmission paths, and their collective asymmetric angular arrangement (45 degrees or more from the vibration axis) achieves effective vibration suppression. This segmentation allows the complex vibration control function to be distributed across multiple simple spring elements.
Solution Approach 2:
The patent uses asymmetric angular positioning of the four springs at 45 degrees or more relative to the vibration axis. This asymmetric configuration optimizes vibration suppression performance by creating unfavorable transmission paths, while the regular quadrangular pattern provides a degree of geometric simplicity that mitigates overall configuration complexity.
4Stability of the object's composition
If spring resonance frequency is higher than blower operational frequency, then the spring structure is stiffer and more stable, but resonance occurs during blower operation
Solution Approach 1:
The patent applies parameter changes by adjusting the spring resonance frequency to be lower than the blower's operational frequency. This parameter adjustment prevents resonance conditions during blower operation. The asymmetric angular positioning of springs also modifies the effective stiffness and dynamic characteristics of the suspension system, contributing to stable operation without resonance while maintaining the required structural stability.
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
The proposed structure significantly reduces vibration propagation along the vibration axis and minimizes blower swinging during transportation, effectively addressing the limitations of previous support methods by optimizing spring orientation and resonance frequencies.
Implementation Method 1
an elastic body made of rubber is described in PTL 1 to support a vibrating structure. The elastic body described in PTL 1 can suppress propagation of vibration from the structure
Implementation Method 2
the blower or fan used for internal ventilation is suspended from the structure of the machine by means of springs slung between the blower casing and the machine structure to eliminate the transmission of vibrations to delicate members in the machine itself
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3~4
AI summary
When viewed vertically from above, first spring (111) extends from first position (121) in first direction (D1) to be away from quadrangle S. Second spring (112) extends from second position (122) in second direction (D2) to be away from quadrangle S. Third spring (113) extends from third position (123) in third direction (D3) to be away from quadrangle S. Fourth spring (114) extends from fourth position (124) in fourth direction (D4) to be away from quadrangle S. First direction (D1), second direction (D2), third direction (D3), and fourth direction (D4) are each 45 degrees or more off direction V along vibration axis A. This aspect enables effective suppression of propagation of vibration from a blower.