Projector Cooler Using Phase Transition Refrigerant

The patent employs phase transition of refrigerant (liquid to gas) in the heat exchanger to achieve cooling. The refrigerant absorbs heat during evaporation and releases heat during condensation, enabling efficient heat transfer without requiring large cooling components. This resolves the contradiction by providing high cooling performance through phase change rather than through large-volume air or liquid cooling systems.

The system uses the projector's own internal heat and moisture to generate refrigerant. The moisture absorbing/discharging member captures moisture from the projector's internal air, and the heat exchanger uses heat from the light source or other components to evaporate the refrigerant. This self-service approach eliminates the need for external refrigerant storage and large cooling infrastructure, reducing projector size while maintaining cooling performance.

The refrigeration cycle using phase transitions provides passive cooling that does not require high-speed blowers. The refrigerant naturally evaporates and condenses based on temperature and pressure differences, eliminating the need for noisy mechanical cooling components. This resolves the noise issue while maintaining effective cooling performance.

The patent replaces the mechanical air-based cooling system (which requires blowers and fans) with a thermodynamic refrigeration system based on phase transitions. This substitution eliminates the mechanical components that generate noise, providing a quieter cooling solution while maintaining or improving cooling efficiency.