US Patent 11702791 Laundry treating apparatus

A laundry treating apparatus may include a drum in which laundry is stored, an air flow passage through which air is circulated, and a heating duct configured to supply hot air to the drum. The air flow passage and heating duct may be configured to prevent or reduce or cooling or condensing of moisture in the circulated air. A steam compressor may be provided to compress some of the air flowing through the air flow passage.