The vacuum cleaner will consist of an enlarged intake using just a foam in order to prevent a drop or reduction in the suction pressure as pre-filter and water as the final filter. Using a vacuum cleaner filter exhales air that is smaller than 0.3 micron. The smallest particle emitted by vacuum cleaners using a HEPA filter. HEPA stands for high-efficiency particulate air. Any particles smaller than 0.3 micron remain untouched. Using water as the final filter will further clean the exhaled air by reducing the particles smaller than 0.3 micron by absorbing these particles. Any particles exhaled by the pre-filter will be absorbed by the final filter which is the water. We have the option to make a multistage water filter in order to further absorb the particles that escape the previous stage.
Although the foam and water filter cannot fully stop particles like smoke but very applicable for vacuum cleaner application, the idea is to replace HEPA filters that cost more than 8 to 20 dollars each for vacuum cleaners. The idea is not yet patented but currently submitted in a Dutch company for evaluation, and hopefully, for European, and probably, for worldwide production. The illustration represents the system but does not represent the final appearance of the device.