Phosphor Wheel Counterweight Structure for Precise Dynamic Balancing
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Solution Overview
Problem
Existing methods for dynamic balancing of phosphor wheel structures in projection devices, such as adding metal sheets, result in vibration, noise, and difficulty in fine weight adjustments due to uneven mass distribution, leading to potential damage and reduced reliability.
Innovation Solution
A wavelength conversion device with a counterweight element composed of a photo-curable material and evenly distributed particles, which is easily coated and cured to provide precise balancing, enhancing adhesion and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If metal sheets are used for counterweight correction, then the mass distribution can be adjusted, but the adhesion reliability deteriorates during high-speed rotation
Solution Approach 1:
The patent uses a composite structure consisting of a metal sheet counterweight element combined with an adhesive layer. This composite material approach allows the metal sheet to provide the necessary mass for balancing while the adhesive ensures reliable attachment to the rotating component, solving both the mass adjustment and adhesion reliability problems simultaneously.
Solution Approach 2:
The patent adjusts the adhesive parameters by selecting specific adhesive materials and optimizing application parameters (such as adhesive amount and curing conditions) to ensure the counterweight remains firmly attached during high-speed rotation while still allowing for precise mass distribution adjustment.
2Manufacturing precision
If tiny metal sheets are used for fine weight adjustment, then the mass precision improves, but the ease of operation deteriorates
Solution Approach 1:
The patent introduces adhesive as an intermediary substance that facilitates the attachment of tiny metal sheet counterweights. This mediator allows for precise weight adjustment using small metal sheets while eliminating the difficulty of handling and installing these tiny components, as the adhesive provides easy and reliable bonding.
Solution Approach 2:
The patent changes the physical state and bonding parameters of the adhesive to optimize both the precision of weight adjustment and the ease of installation. By controlling adhesive viscosity, curing time, and bonding strength, the system enables precise placement of tiny metal sheets while simplifying the overall installation process.
3Reliability
If different amounts of adhesive are used for metal sheets of different sizes, then the adhesion improves, but the manufacturing precision deteriorates due to variable total weight
Solution Approach 1:
The patent systematically adjusts adhesive application parameters (amount, distribution, curing conditions) based on the size and weight requirements of different counterweight elements. This controlled parameter change allows the adhesive amount to be optimized for each specific counterweight while the total weight is precisely calculated and controlled through pre-planned counterweight configurations.
Solution Approach 2:
The patent performs preliminary calculations and planning to determine the exact counterweight configuration and adhesive requirements before manufacturing. This preliminary action allows for precise total weight control while ensuring adequate adhesion for each counterweight element, eliminating the trade-off between adhesion and weight precision.
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 solution improves structural reliability and longevity of projection devices by allowing fine adjustments and preventing counterweight detachment during high-speed rotation.
Implementation Method 1
The first counterweight element includes a first photo-curable material and a plurality of particles
Data Source
AI summary
A wavelength conversion device including a wavelength conversion module and a driving assembly is provided. The driving assembly is suitable for driving the wavelength conversion module to rotate while taking a central axis as a rotating axis. The wavelength conversion module includes a disc, a wavelength conversion layer and a counterweight. The wavelength conversion layer is disposed on a bearing surface of the disc. The counterweight is disposed on the disc. The counterweight is closer to the central axis relative to the wavelength conversion layer. The counterweight includes a first counterweight element. A plurality of particles of the first counterweight element are evenly distributed in a first photo-curable material of the first counterweight element to form the first counterweight element. In a direction parallel to the central axis, a plurality of particle orthogonal projections of the plurality of particles on the bearing surface at least partially overlap.