Dyson's official introduction to cyclone technology is as follows: "Dyson's patented cyclone technology separates very tiny particles in the airflow through powerful centrifugal force. The airflow passes through the cyclone separator at high speed, and dust and dirt are thrown into the dust bucket. This means that the vacuum cleaner will not clog-the suction will remain strong from beginning to end. "
"In order to make these cyclones run in the most efficient way, Dyson vacuum cleaner uses several small cyclones to run horizontally at the same time to ensure that the dirt is separated to the maximum extent and thrown into the dust bucket. This can effectively prevent the machine from being blocked. The smaller the cyclone separators are, the more efficient the vacuum cleaner is. This is because multi-cyclone parallel operation can separate more dust than only one cyclone separator. "
According to the schematic diagram published by Dyson Company, the airflow is sucked by the vacuum cleaner and then enters a large cyclone generator, and then enters a plurality of small cyclone generators at the top to further accelerate the airflow through a vortex with a smaller diameter, so that even dust can be thrown out of the vortex under the action of centrifugal force to achieve the purpose of dust removal.
This ingenious design makes Dyson vacuum cleaner abandon the filter screen that is easy to block, and its dust collection ability remains unchanged, which is praised as a magical whimsy by the majority of Dai powder.
But few people know that when Dyson invented this double cyclone vacuum cleaner in 1979, its basic principle came from the intake filter device of a helicopter. In other words, the eddy current particle separation technology was not initiated by Dyson.
This helicopter is CH-53 "sea stallion" heavy helicopter, which was developed by Sikorsky Company for the US Navy and Marine Corps. Its first model CH-53A arrived in the Vietnam War battlefield on 1967. CH-53A quickly played an important role in the Vietnam War. The rescue and recovery of aircraft and helicopters injured in the war allowed the Marine Corps to recover all the project investment. However, in Vietnam's combat environment, the aircraft also showed the shortcomings of engine performance degradation and dust inhalation leading to failure at high temperature.
In order to solve this problem, Sikorsky not only further improved the engine power, but also developed a revolutionary cage-type intake particle separator (EAPS) for the engine, which can remove particles such as water, sand and dust visible in the engine intake.
The core of EAPS separation device is formation pipe, which was invented by Donaldson Stata in the early 1960s. Each separation device contains 759 formation pipes. When the air at the air inlet passes through the Staitar tube, it will be driven by the spiral baffle in the tube to form a vortex, so that the particles in the air are thrown to the tube wall and enter the dust collection tube under the action of centrifugal force. Then clean air is supplied to the engine, and the dust collection pipe discharges foreign matters. There is an air inlet valve at the front end of EAPS separation device. When most Stata pipelines are blocked or the helicopter enters a level flight and the airspeed exceeds 1 1 1 km/h, this valve will open and stop filtering the air inlet.
Compared with the traditional helicopter dust filter, EAPS has the advantages of low intake resistance and basically zero maintenance. After equipped with CH-53, good engine protection effect has been achieved. Finally, it was borrowed from Dyson vacuum cleaner, which triggered a much-told story.