November 2006, Volume 23, Issue 6, pp 925–930Design and performance evaluation of vacuum cleaners using cyclone technologyAuthorsEnergy and Environmental EngineeringReceived: 06 November 2005Accepted: 08 June 2006DOI: 10.1007/s11814-006-0009-zCite this article as: Ahn, Y.C., Jeong, H.K., Shin, H.S. et al. Korean J. Chem. Eng. (2006) 23: 925. AbstractA cyclone technology for a vacuum cleaner—axial inlet flow cyclone and the tangential inlet flow cyclone — to collect dusts efficiently and reduce pressure drop has been studied experimentally. The optimal design factors such as dust collection efficiency, pressure drop, and cut-size being the particle size corresponding to the fractional collection efficiency of 50% were investigated. The particle cut-size decreases with reduced inlet area, body diameter, and vortex finder diameter of the cyclone. The tangential inlet twin-flow cyclone has good performance taking into account the low pressure drop of 350 mmAq and the cut-size of 1.5 μm in mass median diameter at the flow rate of 1 m3/min.

A vacuum cleaner using tangential inlet twin-flow cyclone shows the potential to be an effective method for collecting dusts generated in the household. [Spock] wanted to do a little reverse engineering of his Miele brand remote control vacuum cleaner, so he broke out his DVB-T SDR dongle to use as a spectrum analyser. Sure enough, he found a 433.83Mhz signal that his vacuum cleaner remote control was using, but to his surprise, he found a stray QAM256 signal when he expected an ASK  only one. After a little detective work, [Spock] eventually tracked it down to a cheap weather station he had forgotten about. The protocol for the weather station was too compelling for him to go back to his vacuum cleaner, though. After downloading an rc-switch Arduino library and making a quick stop at his local radio shack to get a 433.92 radio receiver to decode the signal, he reverse engineered the weather station so he could digitally record the temperature output. The Arduino rc-switch library proved unable to decode the signal, but some Python work helped him get to the bottom of it.

With software defined radio becoming more accessible and common place, hacks like these are a nice reminder just how wired our houses are becoming.Removing Mini Blinds From Brackets A vacuum cleaner is able to suck dirt off carpet because high pressure air from outside it flows toward low pressure air inside. Weight Loss Camps In GermanyIn an electric vacuum, a fan causes air inside the vacuum to move quickly, which lowers the air pressure, causing suction. Kitchen Flooring Options RubberThe higher-pressure air from outside the vacuum is sucked in to replace the low-pressure air, bringing dirt and dust with it to be caught in the filter bag. (Learn more about how vacuums work here.) In this project you can make a hand-pump vacuum cleaner that alters the air pressure inside it and creates suction using a piston instead of a fan.

Follow the procedure to make your vacuum, then read the explanation of how it works! An adult will need to help with the cutting. 1. Cut the bottom of the soda bottle off about 1/3 of the way up from the base. Now cut a slit down one side of the bottom third of the bottle - this will allow you to slide it inside the top part of the bottle so it can act as a piston. 2. Cut a 6'x3' strip of paper and fold it in half lengthwise for extra strength. Tape this strip to the bottom of the bottle to make a handle for your piston. 3. In the top part of the bottle, cut a 3/4-inch hole about 1-1/2 inches below the neck. This hole will lead to the filter bag. 4. Make a filter bag for your vacuum with a 6'x4' piece of tissue paper. Fold the paper rectangle in half and tape the sides to make a bag. Tape this over the hole you made near the neck of the bottle. 5. Tape one end of the thread to the ping-pong ball. Put the ball in the top part of the bottle. Feed the free end of the thread through the mouth of the bottle, and tape it to the outside of the bottle so the ping-pong ball hangs just slightly below the neck.

How does this contraption you just made work? Push the bottom part of the bottle into the top part, then pull it back sharply. This decreases the air pressure inside the bottle, because now there is a bigger space for the same amount of air. The lower-pressure air inside the bottle creates suction, pulling in higher-pressure air from outside in through the mouth. Now push the piston back in; this compresses the air and increases the pressure, so air flows back out of the bottle. The ping-pong ball works as a valve - when you push the piston in, it forces the ball into the neck of the bottle so that the air exits through the hole with the filter bag, rather than going out through the mouth. Now put your vacuum to work! Try sucking up bread crumbs or tiny balls of paper. When you pull the piston out, they will be sucked into the bottle, and when you push the piston in, they will be forced into the filter bag. Experiment to find out the best way to use your bottle vacuum. Does it work better to pump the piston rapidly?

Should you pull out on the piston faster than you push in on it? Can you think of ideas to improve the design and efficiency of your vacuum? Give them a try! Hoover WindTunnel T-Series Rewind Bagless UH70120 vacuum cleaner This 18-pound upright from Hoover is bagless and has HEPA filtration and a 27-foot, retractable cord. Ratings, Reviews, Reliability & Compare are for Subscribers Only Why use Consumer Reports Price & Shop? Unbiased: Retailers cannot influence placement. Ad-free: As an integrated part of Consumer Reports, you shop in a completely ad-free environment. New products only: You will never find used or refurbished products for sale. Consumer Reports is an independent, non-profit organization dedicated to helping consumers. We do not accept advertising. Smarter vacuum cleaners a step closer with sensor research Engineer Professor Andrew Davison has been appointed as the Royal Academy of Engineering/Dyson Chair in Efficient Vision for Robotics at Imperial College London.

The newly created Chair, jointly funded by the Academy and Dyson, provides support for five years to develop the computer vision technology crucial to the future of home robotics. Professor Davison, who is currently leading the £5m Dyson robotics lab at Imperial College London, will now have the opportunity to further build on over 20 years’ experience in real-time vision technology, aiming to better understand the algorithms needed in state-of-the-art cameras and computer processors. The latest hardware is being engineered to work in a decentralised way – far more like the human brain than earlier computers, allowing the technology to consume much less power. By tackling the challenge of making vision algorithms, which take advantage of advances in processor and sensor design to deliver efficient real-time estimates of their surroundings, the research will pave the way for their use in affordable domestic robotic products. Professor Davison, who also leads the Dyson Robotics Lab at Imperial, said: “I am very grateful to the Royal Academy of Engineering and Dyson for supporting my ongoing research in 3D vision.

Pushing the boundaries of efficient algorithms is one of the main keys to enabling this technology to make an impact in genuinely useful future products.” Professor Ric Parker CBE FREng, Chair of the Academy’s Research Committee, said: “Professor Davison’s research will build on years of world-leading innovation in computing, imaging and consumer electronics with the potential to have an impact on every home in the country. The Royal Academy of Engineering is delighted to support him as Research Chair.” RAEng Research Chairs aim to strengthen the links between industry and academia by supporting exceptional academics in UK universities to undertake use-inspired research that meets the needs of the industrial partners. Applications are invited from professors, readers or senior lecturers from any engineering discipline wishing to build strong industrial collaborations. Engineering is defined in its broadest sense, encompassing a wide range of diverse fields, including computer science and materials.

Royal Academy of Engineering. As the UK’s national academy for engineering, we bring together the most successful and talented engineers for a shared purpose: to advance and promote excellence in engineering. We provide analysis and policy support to promote the UK’s role as a great place to do business. We take a lead on engineering education and we invest in the UK’s world-class research base to underpin innovation. We work to improve public awareness and understanding of engineering. We are a national academy with a global outlook. We have four strategic challenges: - Make the UK the leading nation for engineering innovation - Address the engineering skills crisis - Position engineering at the heart of society - Lead the profession About Imperial College London. Imperial College London is one of the world's leading universities. The College's 14,000 students and 7,500 staff are expanding the frontiers of knowledge in science, medicine, engineering and business, and translating their discoveries into benefits for society.

Founded in 1907, Imperial builds on a distinguished past - having pioneered penicillin, holography and fibre optics - to shape the future. Imperial researchers work across disciplines to improve health and wellbeing, understand the natural world, engineer novel solutions and lead the data revolution. This blend of academic excellence and its real-world application feeds into Imperial's exceptional learning environment, where students participate in research to push the limits of their degrees. Imperial collaborates widely to achieve greater impact. It works with the NHS to improve healthcare in west London, is a leading partner in research and education within the European Union, and is the UK's number one research collaborator with China. Imperial has nine London campuses, including its White City Campus: a 25 acre research and innovation centre in west London. At White City, researchers, businesses and higher education partners are co-locating to create value from ideas on a global scale.

Dyson technology is now sold in 72 markets globally, with over 90% sold outside the UK.  Employing 9,000 worldwide, Dyson expects to spend £5m per week on research and development in 2016 and an additional £100m over the next three years on external technology investments.  It has 40 products in development and 50 active research programmes with 20 universities. In 2016 the first phase of Dyson’s Research, Design & Development campus will open in Malmesbury – part of a £250m UK expansion and a wider £1.5bn investment in technology which will see a doubling in the size of the current research footprint in the UK. In 2016, Dyson was named one of the UK’s top ten favourite brands, according to YouGov BrandIndex. Dyson ranked 5th beating the likes M&S, YouTube, Apple & Waitrose. In 2016, Dyson was named the 5th best place to work in the UK, according to a report for Bloomberg by Statista. In 2016, Dyson was ranked 4th most admired brand based on the views of a 100 top directors from the UK’s largest companies, approximately half of whom are in the FTSE 350.