Human Washing Machine at Expo 2025 Osaka
At Expo 2025 Osaka, Science Corporation introduced an innovative human washing machine that uses water splashes and air blasts to clean a person automatically while they sit inside a bathing capsule.
Cleaning Technology
The capsule employs micro- and ultrafine bubbles to wash the entire body. The lower body is covered with microbubbles approximately 0.003 millimeters wide, while the upper body and head are cleaned with even smaller ultrafine bubbles, about 0.0001 millimeters wide. These bubbles effectively remove dirt, oil, and odor-causing substances from the skin and pores.
Health Monitoring
Embedded sensors monitor the user’s physical condition during the bath. A sensor on the backrest measures heart rate and electrocardiogram, displaying the data on a screen in front of the user.
"The system installed in the human washing machine at the Expo 2025 Osaka fair also includes an automatic visual response: when the sensor detects tiredness, it shows calm or positive images to help the user feel more relaxed."
Post-Wash Process
After cleaning, water drains automatically, and the drying phase begins. Air blasts surround the person’s body while seated. The entire cleaning cycle lasts about 15 minutes, potentially shorter than a typical human shower.
Images
All images courtesy of Science Corporation Ltd.
Author’s Summary
This futuristic washing machine uses microbubbles and health sensors to provide a thorough, hands-free bath experience, blending hygiene with real-time relaxation feedback.