Dyson pioneers new purification test standard

In partnership with China Alliance.

China’s Household Appliance Standard and Technology Industry Alliance (CHEARI) has released the first association standard globally for intelligent air purifying fans – featuring test methods first developed on Dyson’s UK Technology Campus. By sensing pollution, capturing it and then circulating cleaner air these machines are engineered to purify uniformly across a room.

Working in conjunction with Dyson engineers, experts at CHEARI have constructed a 27m2 test chamber designed to better reflect real average living room sizes of Chinese homes.

Dyson China head of research, design, development and operations, Tom Bennett said, “Globally, modern homes trap pollution and limit circulation, but for many people it goes unrealised. We needed to create a smart machine that accurately senses the pollution and a sophisticated Dyson 360 degree HEPA purification system to remove it from the home.

“Through rigorous testing we also discovered that to purify across a room, powerful projection is key. With our Air Amplifier™ technology we are able to deliver at least 200 litres of cleaner air every second to clean every corner, as our strong results under the new standard reveal.”

The new testing method assesses the ability of machines to remove harmful particles and gases, the uniformity of the cleaning performance delivered around the whole room, and airflow projection. All machines are tested using their automatic pollution detection function.

The new method will sit alongside China’s existing national standard GB/T18801-2015, which uses a smaller testing chamber (12 sqm) to test machines under max mode only. 12 sqm is the same size chamber used in international test standards for purifiers. The existing standards have no measurement on intelligence or whether a machine delivers uniform cleaning in a larger family room.

By enlarging the size of the test chamber compared to the existing purifier standard and increasing the number of test sensors to 9, the chamber is able to detect the accuracy of a machine’s automatic function and ensure that the machine truly cleans across a room. In the home context, it would ensure that a person on one side of the room receives a similar air quality to a person on the other side of the room. There’s also no need to manually change the machine based on guess work or costly air quality monitors.

CHEARI chief test engineer, Lu Jianguo said, “We are always looking at ways to accurately guide consumers toward technologies integrating high performance, smartness and uniformity of purification and recognize the growing need for intelligent air purifying fans. Dyson leads the way in this category of purification so we’ve worked closely with their engineers to bring a test method to China that pushes the purification agenda forward, and welcome other manufacturers to enter into this new category.”

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