Bead Transport Control in Visual Display Devices
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Solution Overview
Problem
Existing visual display devices using light particulate matter, such as expanded polystyrene beads, lack the ability to dynamically and automatically control the movement of beads between areas, leading to inefficient visual effects and mechanical damage to the beads due to reliance on gravity and single airflow sources.
Innovation Solution
A visual display device with a bead transport control subsystem using a second stream of airflow, independent from the primary airflow, to control the movement of beads through conduits, allowing for variable flow rates and minimal bead damage by employing fans and dampers to manage airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single airflow source is used to move beads through the display device, then the device structure is simple, but the ability to dynamically control bead movement and flow rate is limited
Solution Approach 1:
The airflow control system is segmented into multiple independent airflow sources (first airflow source for main column, second airflow source for return column). Each airflow source can be controlled independently to manage bead flow in different regions of the display device, enabling dynamic control of bead movement patterns and flow rates.
Solution Approach 2:
A conduit is introduced as an intermediary component to transport beads between the first column and second column. The conduit works in conjunction with the second airflow source to control bead flow independently from the main airflow path, providing versatile control over bead distribution.
2Reliability
If beads are moved through the fan housing to recycle them, then the beads are contained and reused, but the mechanical interaction causes damage and crushing of beads over time
Solution Approach 1:
The mechanical bead transport system (where beads physically contact and pass through fan blades) is replaced with a pneumatic system. The second airflow source moves beads through the return column and conduit, eliminating mechanical contact with fan blades during the recycling process and preventing bead damage while maintaining containment and reuse.
3Length of stationary object
If the Venturi effect is used to move beads between columns, then no additional mechanical components are needed, but the effect is only effective over a short distance and lacks independent control
Solution Approach 1:
A second airflow source (pneumatic system) is introduced to provide independent control over bead flow in the return column and conduit. This pneumatic control mechanism extends the effective bead transport distance beyond the limitations of the Venturi effect and allows independent adjustment of bead flow rates between columns.
4Ease of operation
If airflow control devices are placed directly in the bead path to control flow, then precise control is achieved, but mechanical obstruction damages the beads
Solution Approach 1:
Mechanical airflow control devices that would directly obstruct the bead path are replaced with a pneumatic control system. The second airflow source uses air pressure and flow control to manage bead movement through the return column and conduit, achieving precise flow control without mechanical contact or obstruction of the beads.
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
Enables dynamic and automatic control of bead movement, enhancing visual effects and reducing mechanical stress on beads, thereby extending the lifespan of the display and improving maintenance efficiency.
Implementation Method 1
a first stream of airflow configured to agitate, fluidize, suspend, or float at least some of said plurality of beads
Implementation Method 2
a second stream of airflow controlling a flow of at least a portion of said plurality of beads through at least one conduit connecting a first region of the chamber to a second region of the chamber
Implementation Method 3
In some embodiments the visual display device further comprises a screened opening disposed within at least a wall or end of said at least one conduit
Data Source
AI summary
A visual display device creating various visual and audible effects from the motion of light particulate matter, such as beads of expanded polystyrene, comprising a chamber through which a stream of air flow is configured to agitate, fluidize, suspend, or float at least some of the beads. The device also includes a bead transport control subsystem to control the flow of some beads through a conduit from one region of a chamber in the device to another different region in the chamber of the visual display device. The bead transport control subsystem comprises the conduit and a second stream of airflow into or out of a portion of the conduit through a screened opening to prevent or create fluid-like flow of the beads through the conduit that is controlled at least partially independently from the first stream of airflow.