Vibration Damping Device with Vortex Chamber and Blocking Members
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Solution Overview
Problem
Existing vibration damping devices have complex structures and manufacturing challenges, and they can experience increased dynamic spring constants due to clogging, affecting performance in handling vibrations with higher frequencies and smaller amplitudes.
Innovation Solution
A vibration damping device with a vortex chamber unit that includes a laminar flow path and communication holes, where the liquid flows through the vortex chamber to increase pressure loss and absorb vibrations, and blocking members regulate the flow to prevent shortcutting and enhance pressure loss, allowing for efficient damping of various frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plunger member and multiple limiting passages are used to switch flow paths according to vibration frequency, then vibration damping performance is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The invention extracts and removes the plunger member from the system, replacing it with a fixed partitioning member that has integrated flow path structures. This eliminates the moving component while maintaining the ability to handle different vibration frequencies through the fixed geometric design of the partitioning member and flow passages.
Solution Approach 2:
The invention merges the functions of multiple limiting passages and the plunger member into a single integrated partitioning member structure. The partitioning member combines the flow path switching function with the liquid chamber separation function, eliminating the need for separate components and reducing overall device complexity.
2Reliability
If limiting passage dimensions are optimized for specific vibration frequencies, then resonance damping is improved, but performance degrades for unintended high-frequency vibrations due to clogging effects
Solution Approach 1:
The invention segments the flow path into multiple independent passages with different cross-sectional areas. This allows each passage to handle different frequency ranges effectively, with larger passages handling lower frequencies and smaller passages handling higher frequencies, thereby improving adaptability across the full vibration spectrum without clogging issues.
Solution Approach 2:
The invention changes the geometric parameters of the flow passages, specifically providing multiple passages with different cross-sectional areas. This parameter variation allows the system to maintain appropriate flow characteristics across different vibration frequencies, preventing clogging effects for high-frequency vibrations while maintaining resonance damping for intended frequencies.
3Reliability
If multiple components including plunger member, limiting passages, and partitioning member are used, then vibration control is improved, but ease of manufacture deteriorates
Solution Approach 1:
The invention merges multiple components into a single integrated partitioning member that performs both liquid chamber separation and flow path definition functions. This consolidation reduces the number of parts that need to be manufactured and assembled, significantly improving ease of manufacture while maintaining vibration control functionality.
Solution Approach 2:
The invention extracts and removes the plunger member from the component list, replacing its function with a fixed geometric structure. This elimination of moving parts simplifies manufacturing processes and reduces assembly complexity while maintaining the ability to control vibration across different frequencies.
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 device simplifies structure and manufacturing while effectively damping vibrations across different frequencies, suppressing dynamic spring constant increases, especially for unintentional high-frequency vibrations, thus maintaining product characteristics.
Implementation Method 1
The vortex chamber unit includes a vortex chamber communicating with one liquid chamber through a laminar flow path and communicating with the other liquid chamber through a communication hole... The vortex chamber form circulating flow of a liquid according to a flow speed of the liquid flowing in from the laminar flow path
Implementation Method 2
the liquid flows from the laminar flow path into the vortex chamber at a sufficiently high speed and circulates within the vortex chamber. Then, for example, vibration can be absorbed and damped by increasing the pressure loss of the liquid due to an energy loss by firming the circulating flow
Implementation Method 3
The blocking members are provided with flow openings penetrating the blocking members. The vortex chamber form circulating flow of a liquid according to a flow speed of the liquid flowing in from the laminar flow path and allow the liquid to flow out from the coma communication hole through the flow openings.
Data Source
AI summary
A laminar flow path (34) is opened into the vortex chambers (33a and 33b) from inner peripheral surfaces that face in radial directions of the vortex chambers (33a and 33b) being aimed in circumferential directions of the vortex chambers (33a and 33b) among wall surfaces defining the vortex chambers (33a and 33b). A communication hole (32b) is opened into the vortex chamber (33a and 33b) from an end surface that faces in a direction of center axis of the vortex chamber (33a and 33b) being aimed in a direction of a center axis among the wall surfaces defining the vortex chamber (33a and 33b). Blocking members (36a and 36b) extending in the direction of the center axis so as to surround the communication hole (32b) from an outside in the radial direction are provided within the vortex chambers (33a and 33b). The blocking members (36a and 36b) are provided with flow openings (37a and 37b) penetrating the blocking members (36a and 36b). The vortex chambers (33a and 33b) form circulating flows of a liquid according to a flow speed of the liquid flowing in from the laminar flow path (34) and allows the liquid to flow out from the communication hole (32b) through the flow openings (37a and 37b). Therefore, simplification of structure and facilitation of manufacture are achieved while maintaining product characteristics of a vibration damping device.