Agitation Defoaming Device with Variable Spin Frequency
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Solution Overview
Problem
Existing agitation/defoaming devices face challenges in achieving uniform component concentration distribution and reducing air bubbles while maintaining high defoaming efficiency, as increasing spin motion frequency can atomize air bubbles or generate new ones, and increasing orbital motion frequency can separate components with different specific gravities, leading to non-uniform distribution. Additionally, performing treatments under reduced pressure increases costs and alters component ratios in mixed liquids.
Innovation Solution
The method involves superimposing reverse and same rotation processes on the spin motion, with specific rotational frequencies and directions relative to the orbital motion, allowing for independent optimization of agitating and defoaming effects, and includes a device with a container holder, rotational units, and motors to control these motions precisely, reducing costs and device size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the frequency of the spin motion is increased to enhance the agitating effect, then the agitating effect is improved, but the defoaming effect tends to be decreased because air bubbles may be atomized or newly generated
Solution Approach 1:
The invention applies periodic action by alternating between high-frequency spin motion (for agitation) and low-frequency spin motion (for defoaming) in a cyclic manner. The control unit switches between these different motion regimes periodically, allowing the system to achieve both effective agitation and defoaming without the harmful side effects of continuously high spin frequencies
Solution Approach 2:
The invention implements dynamics by making the spin motion frequency variable rather than fixed. The control unit dynamically adjusts the spin frequency based on the current processing phase - using high frequency during agitation phases and low frequency during defoaming phases. This dynamic control allows optimal performance of both contradictory functions at different times
2Reliability
If the centrifugal force is increased by increasing the frequency of the orbital motion to enhance the defoaming effect, then the defoaming effect is improved, but each component in the object is separated and the uniformity of the component concentration distribution tends to be degraded
Solution Approach 1:
The invention uses periodic action by alternating between high-frequency orbital motion (for defoaming) and low-frequency orbital motion (for maintaining uniform distribution) in cycles. The control unit switches between these modes periodically, allowing effective defoaming when needed while preserving component uniformity during other phases
Solution Approach 2:
The invention implements dynamics by making the orbital motion frequency variable. The control unit dynamically adjusts orbital frequency based on processing requirements - using high frequency during defoaming phases and low frequency during phases requiring uniform component distribution, thus avoiding the harmful separation effect of continuously high orbital frequencies
3Productivity
If the spin motion frequency is increased to enhance agitation, then agitation is improved, but air bubbles may be atomized or newly generated reducing defoaming efficiency
Solution Approach 1:
The invention applies periodic action by cycling between high-spin phases (that generate agitation but also air bubbles) and low-spin phases (that allow air bubbles to rise and escape). This periodic switching prevents the cumulative buildup of air bubbles while maintaining effective agitation during the high-spin phases
Solution Approach 2:
The invention converts the harmful effect of air bubble generation during high-speed agitation into a beneficial process by immediately following with low-speed phases that promote bubble escape. The air bubbles generated during agitation become the target of the subsequent defoaming phase, turning a negative side effect into part of the overall processing benefit
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 highly precise agitation and defoaming treatments with reduced costs, achieving both uniform component distribution and effective air bubble reduction, while minimizing the generation of new air bubbles and optimizing processing conditions for different materials.
Implementation Method 1
the centrifugal force of the orbital motion (revolution) makes the object be pressed against the inside surface of the container so that air bubbles internally existing in the object move to the surface of the object
Implementation Method 2
the spin motion makes the object be spirally flowed to agitate the object
Data Source
AI summary
[Problem] To provide a agitation/defoaming method and device with which both of uniformity in dispersion of object to be processed and reduction of air bubbles can be achieved with high precision.[Solution] Provided is a agitation/defoaming method for producing orbital and spin motions of a container containing object to be processed by a device provided with orbital and spin drive motors that can independently control the velocities of the orbital and spin motions. Both defoaming and agitating treatments with high precision can be achieved by respectively performing a reverse rotation superimposition processing, wherein the rotational frequency of the spin drive motor is obtained by superimposing the first rotational frequency in a direction opposite to the direction of the orbital motion on the frequency of the orbital motion, and a same rotation superimposition processing, wherein the rotational frequency of the spin drive motor is obtained by superimposing the second rotational frequency in the same direction as the direction of the orbital motion on the frequency of the orbital motion, at least once.