Low-noise, low-power-consumption motor for air purifiers

Part of the key to realizing the aforementioned quiet performance and low power consumption was Nidec’s contra-rotating propeller fan. The technology used in it applies the contra-rotating propeller, which is used in aircraft propellers and ship screws, and rotates two, respectively optimized fans in the reverse direction from each other to generate aerial current efficiently.

So far, Nidec has utilized this technology for its server-cooling fans. While strong cooling systems are required for servers, whose heating values are increasing every year, there is only so much space to install fans. This is why the contra-rotating propeller fan proved to be an effective solution for efficient cooling of servers. Air Purifier PU-AA50 utilizes this technology, which Nidec has cultivated in this area of server cooling.

Air Purifier PU-AA50 utilizes this technology, which enables the front propeller to deliver an easy-to-catch wind to the back propeller, achieving high efficiency and quiet performance. The air purifier was designed to have an appropriate airflow path to accommodate a filter, an essential element of the product. Nidec’s high-efficiency motor equipped in Air Purifier PU-AA50 makes it a highly energy-efficient product as well.

To realize Zojirushi Corporation’s aspiration of making the world’s best air purifier, the company and Nidec adapted a contra-rotating propeller fan, which had hardly been used for air purifiers, designed an optimum airflow path, and used a high-efficiency motor to jointly develop Air Purifier PU-AA50.