Piezoelectric Dynamic Wall Heat Exchange for Compact Systems

The patent applies piezoelectric excitation to generate mechanical vibrations in the heat exchange sleeve walls. These vibrations create dynamic mixing and elongate the fluid residence time within the heat exchange zone, significantly enhancing heat transfer efficiency without requiring a large device volume. The vibration frequency and amplitude are controlled to optimize heat exchange while maintaining compact dimensions.

The patent changes the physical state and motion parameters of the heat exchange sleeve walls by applying piezoelectric excitation. This transforms the walls from a static structure to a dynamically vibrating structure, altering the fluid flow patterns and heat transfer coefficients. The parameter changes in wall vibration enable enhanced heat exchange performance in a compact device configuration.

Instead of using complex mechanical structures to prolong fluid residence time, the patent employs piezoelectric excitation to vibrate the heat exchange sleeve walls. This vibration creates dynamic flow patterns that naturally extend fluid residence time through enhanced mixing and recirculation effects, achieving the desired effect with minimal structural complexity.

The patent replaces complex mechanical vibration mechanisms with piezoelectric actuators. The piezoelectric stacks directly convert electrical energy to mechanical vibrations of the sleeve walls, eliminating the need for motors, linkages, or other complex mechanical systems while achieving the same heat exchange enhancement effect.

The patent extracts only the essential piezoelectric excitation function from complex vibration systems. By using piezoelectric stacks that can be integrated directly into the heat exchange sleeve structure, the design eliminates unnecessary mechanical components and reduces the overall device volume while maintaining effective heat exchange performance.

The piezoelectric stacks are nested within or integrated into the heat exchange sleeve structure itself. This nesting approach allows the vibration generation components to occupy minimal space within the existing device architecture, avoiding volume increase while enabling effective wall vibration for enhanced heat exchange.