Thermoelectric (Peltier) Cooling in Portable Ice-Cooling Fans

Ordinary portable fans only "blow air," while ice-cooling fans "cool." Hebron WF04 waist ice-cooling fan embeds a thermoelectric cooler using the Peltier Effect: when DC current passes through a junction of two semiconductors (e.g., bismuth telluride), one side absorbs heat and the other releases it; the cold side near a conductive plate delivers air-conditioner-like coolness.

Synergy with BLDC: WF04 uses a BLDC motor with max wind speed 7.9 m/s for refreshing airflow; the cooler lowers temperature while the motor extends reach, forming a local icy microclimate several degrees cooler than mere blowing.

Ultra-thin wearable: Only 200g, ultra-slim, ergonomically optimized for wear, with desktop/worn/clip three modes. 5000mAh battery ~34h, Type-C fast charge.

Safety and efficiency: The TEC has no refrigerant and no mechanical compression—quiet by structure; combined with overcharge/over-discharge protection and a metallic housing, it balances cooling and wearing safety. Condensation on the cold side is managed via airflow routing and housing design.

Conclusion: Peltier semiconductor cooling + BLDC airflow is the key technological leap from "wind blocking" to "heat defense," and WF04 is a mature productization of this route.