Architecture
We believe Dyson Airwrap is generally safe because of its temperature control and the accompanied Coanda Effect. The former can be achieved with the help of glass-bead thermistor and the microprocessor. Glass-bead thermistor, as a thermal sensor, can measure exit air flow 20 times per second. Then it will transmit relevant data to the machine’s microprocessor, which is able to intelligently ensures temperature always stay below 302 oF. The combination of thermistor and microprocessor limits temperature of the air generated by Dyson digital motor V9 and thus be safer the traditional curly irons that use extreme heat to set the curls.
When it comes to motor V9, it is one of the most crucial parts of many Dyson products, including Dyson Airwrap and the famous hair dryer, Dyson Supersonic. “Dozens of robots, split across 20 stations, assemble the digital motor V9 at a facility that can produce a brand-new flawless motor every nine seconds.” This motor contains an axial flow impeller. The size of the motor is small enough to sit on a coin, but still power enough to spin at 110,000rpm and generates 3.2kPa to harness Coanda Effect. It works like a modern jet engine and allows air to flow in and out along the direction of its axis. However, it is safe because it’s inside the handle.
Coanda
Effect
Coanda Effect is closely related to the motor V9. There are six slots in each barrel, which enables air to go through with a certain direction and thus can help set curls with different directions. The high-speed air flow generated by Motor V9 does through these slots and reduce the air pressure on the surface of the barrel, which is lower than the normal air pressure in the atmosphere. This higher pressure from the atmosphere then attaches the hair to the barrel, so that users can avoid using hands to wrap hair and thus reduce the risk of getting burnt. In order to make sure the speed of airflow generated by the motor is fast enough, users need to turn both ‘air capacity control’ and ‘temperature control’ to the highest level.
When using the Airwrap, users turn on the switch so that temperature control and Coanda Effect work at the same time. In other words, hair can be curled with high temperature from the high-speed air flow, but the wind will not be too hot because of the glass-bead thermistor and the microprocessor. However, it is not enough to actually set the curls. Users need to keep the aforementioned process working for 10-15 seconds and then switch to the cold shot. The replacement between hot and cold air can set the curls and makes sure that the curls last longer. To make sure the Airwrap works in the normal way, users just need to clean the dust screen every one or two months with an accompanied brush.
In general, Dyson Airwrap is safer than conventional curly irons thanks to its temperature control and the innovative use of Coanda Effect. The barrel will not become too hot and cause damage to hair. Meanwhile, Coanda Effect helps users avoid using hands to wrap hair around barrel so that it can reduce the risk of getting burnt.
