|
Dyson DC15
Dyson is a Singapore-based company and manufacturer of bagless vacuum cleaners (using cyclonic separation and brushless electric motors), heatless hand dryers, bladeless fans/heaters, and robotic vacuum cleaners. Technologies Dyson has developed various basic technologies for use in their products, including designing and manufacturing its own specialized motors. Dyson Digital Motor The electric motor marketed as the Dyson Digital Motor (DDM) is a direct current motor, operating on the switched reluctance principle. These brushless motors rotate at up to 110,000 rpm. The motor used a two-pole brushless rotor with a digital controller. Dyson said its efficiency was 84%, which was less than the 96% efficiency that is achieved in some brushless designs. In order to deal with the high speed and centrifugal forces, the impeller is made of carbon fibre reinforced polymer; the shaft is steel. The first mass-produced version was named "X020" and used in the Airblade hand dr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dyson (company)
Dyson Limited, Trade name, d.b.a Dyson, is a Singapore, Singaporean–United Kingdom, British multinational technology company. Founded in 1991 by James Dyson in Malmesbury, England, the company designs and manufactures Home appliance, household appliances such as vacuum cleaners, air purifiers, hand dryers, bladeless fans, HVAC#Heating, heaters, hair dryers, and lights. As of 2022, Dyson has more than 14,000 employees worldwide. In 2019, Dyson moved the headquarters from the United Kingdom to Singapore to be closer to its manufacturing and supply-chain hubs and Asian customer base. History Early years In the 1970s, James Dyson bought a The Hoover Company, Hoover Junior vacuum cleaner, which lost suction after a period of use. Frustrated, Dyson emptied the disposable paper bag to try to restore the suction but this had no effect. On opening the bag to investigate, he noticed a layer of dust inside, clogging the fine material mesh. Later, Dyson was working on his ballbarrow at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ranulph Fiennes
Sir Ranulph Twisleton-Wykeham-Fiennes, 3rd Baronet (born 7 March 1944), commonly known as Sir Ranulph Fiennes () and sometimes as Ran Fiennes, is a British explorer, writer and poet, who holds several endurance records. Fiennes served in the British Army for eight years, including a period on counter-insurgency service while attached to the Army of the Sultanate of Oman. He later undertook numerous expeditions and was the first person to visit both the North Pole and South Pole by surface means and the first to completely cross Antarctica on foot. In May 2009, at the age of 65, he reached the summit of Mount Everest. According to the ''Guinness Book of World Records'' in 1984, he was the world's greatest living explorer. Fiennes has written numerous books about his army service and his expeditions as well as books on explorers Robert Falcon Scott and Ernest Shackleton. Early life and education Fiennes was born in Windsor, Berkshire, on 7 March 1944, nearly four months af ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North America
North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the south and west by the Pacific Ocean. The region includes Middle America (Americas), Middle America (comprising the Caribbean, Central America, and Mexico) and Northern America. North America covers an area of about , representing approximately 16.5% of Earth's land area and 4.8% of its total surface area. It is the third-largest continent by size after Asia and Africa, and the list of continents and continental subregions by population, fourth-largest continent by population after Asia, Africa, and Europe. , North America's population was estimated as over 592 million people in list of sovereign states and dependent territories in North America, 23 independent states, or about 7.5% of the world's popula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Europe
Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east. Europe shares the landmass of Eurasia with Asia, and of Afro-Eurasia with both Africa and Asia. Europe is commonly considered to be Boundaries between the continents#Asia and Europe, separated from Asia by the Drainage divide, watershed of the Ural Mountains, the Ural (river), Ural River, the Caspian Sea, the Greater Caucasus, the Black Sea, and the waterway of the Bosporus, Bosporus Strait. "Europe" (pp. 68–69); "Asia" (pp. 90–91): "A commonly accepted division between Asia and Europe ... is formed by the Ural Mountains, Ural River, Caspian Sea, Caucasus Mountains, and the Black Sea with its outlets, the Bosporus and Dardanelles." Europe covers approx. , or 2% of Earth#Surface, Earth's surface (6.8% of Earth's land area), making it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ballbarrow
The Ballbarrow was a variation of the wheelbarrow design, by James Dyson released in 1974 in the UK. It featured a moulded plastic wikt:hopper, hopper on a steel frame and a spherical plastic wheel, allowing increased manoeuvrability. Dyson said that the surface area of the ball, larger than that of a conventional design, made the ballbarrow easier to use in soft soil and more laterally stable with heavy loads on uneven ground. The original design featured a galvanised steel or copper hopper, forming integral rear legs. Conventional barrows use a bend in the frame to form these legs. Later the design was changed to a plastic hopper, with an optional clip on height-extension piece. The Ballbarrow won the Building Design Innovation Award in 1977. Dyson continued with the ball-wheel concept in his design for the Trolleyball boat launcher in 1978, and the List of Dyson products#DC15, DC15 vacuum cleaner in 2005. Dyson claimed his failure to maintain control of his invention by assign ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Universal Joint
A universal joint (also called a universal coupling or U-joint) is a joint or coupling connecting rigid shafts whose axes are inclined to each other. It is commonly used in shafts that transmit rotary motion. It consists of a pair of hinges located close together, oriented at 90° to each other, connected by a cross shaft. The universal joint is not a constant-velocity joint. U-joints are also sometimes called by various eponymous names, as follows: * Cardan joint, after Gerolamo Cardano, a polymath of the 16th century who contributed to knowledge of various clever mechanisms, including gimbals * Hooke joint or Hooke's joint, after Robert Hooke, a polymath of the 17th century who contributed to knowledge of various clever mechanisms * Spicer joint, after Clarence W. Spicer and the Spicer Manufacturing Company, who manufactured U joints * Hardy Spicer joint, after the Hardy Spicer brand, a successor to the Spicer brand History The main concept of the universal joi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dyson DC15
Dyson is a Singapore-based company and manufacturer of bagless vacuum cleaners (using cyclonic separation and brushless electric motors), heatless hand dryers, bladeless fans/heaters, and robotic vacuum cleaners. Technologies Dyson has developed various basic technologies for use in their products, including designing and manufacturing its own specialized motors. Dyson Digital Motor The electric motor marketed as the Dyson Digital Motor (DDM) is a direct current motor, operating on the switched reluctance principle. These brushless motors rotate at up to 110,000 rpm. The motor used a two-pole brushless rotor with a digital controller. Dyson said its efficiency was 84%, which was less than the 96% efficiency that is achieved in some brushless designs. In order to deal with the high speed and centrifugal forces, the impeller is made of carbon fibre reinforced polymer; the shaft is steel. The first mass-produced version was named "X020" and used in the Airblade hand dr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dyson
Dyson may refer to: * Dyson (surname), people with the surname Dyson * Dyson (company), a Singaporean multinational home appliances company founded by James Dyson * Dyson (crater), a crater on the Moon * Dyson (operating system), a Unix general-purpose operating system derived from Debian using the illumos kernel, libc, and SMF init system * Dyson sphere, a hypothetical megastructure that completely encompasses a star and captures most or all of its power output * Dyson tree, a hypothetical plant suggested by physicist Freeman Dyson Freeman John Dyson (15 December 1923 – 28 February 2020) was a British-American theoretical physics, theoretical physicist and mathematician known for his works in quantum field theory, astrophysics, random matrix, random matrices, math ... ** '' Eufloria'' (formerly called ''Dyson''), a video game based on the idea of Dyson trees * , a United States Navy destroyer in commission from 1942 to 1947 * NOAAS ''Oscar Dyson'' (R 224), an Ameri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HEPA
HEPA (, high efficiency particulate air) filter, also known as a high efficiency particulate arresting filter, is an efficiency standard of air filters. Filters meeting the HEPA standard must satisfy certain levels of efficiency. Common standards require that a HEPA air filter must remove—from the air that passes through—at least 99.95% (ISO, European Standard) or 99.97% (ASME, U.S. DOE) of particles whose diameter is equal to 0.3 μm, with the filtration efficiency increasing for particle diameters both less than and greater than 0.3 μm. HEPA filters capture pollen, dirt, dust, moisture, bacteria (0.2–2.0 μm), viruses (0.02–0.3 μm), and submicron liquid aerosol (0.02–0.5 μm). Some microorganisms, for example, ''Aspergillus niger'', '' Penicillium citrinum'', ''Staphylococcus epidermidis'', and ''Bacillus subtilis'' are captured by HEPA filters with photocatalytic oxidation (PCO). A HEPA filter is also able to capture some viruses and ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suction Power
Airwatt or air watt is a unit of measurement that represents the true suction power of vacuum cleaners. It is calculated by multiplying the airflow (in cubic metres per second) by the suction pressure (in pascals). This measurement reflects the energy per unit time of the air flowing through the vacuum's opening, which correlates to the electrical energy (wattage) supplied through the power cable. The airwatt is a valuable measurement of vacuum cleaner motor efficiency because it represents the power carried by the fluid flow (in the case of a typical household vacuum, this fluid is air). The power of the airflow is equal to the product of pressure and volumetric flow rate. Unlike electrical power (measured in watts), which includes energy lost due to inefficiencies, the airwatt directly reflects the actual airflow and suction power. Therefore, two vacuum cleaners with the same airwattage will have essentially the same suction, whereas devices with the same electrical wattage mig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dyson 360 Vis Nav
Dyson may refer to: * Dyson (surname), people with the surname Dyson * Dyson (company), a Singaporean multinational home appliances company founded by James Dyson * Dyson (crater), a crater on the Moon * Dyson (operating system), a Unix general-purpose operating system derived from Debian using the illumos kernel, libc, and SMF init system * Dyson sphere, a hypothetical megastructure that completely encompasses a star and captures most or all of its power output * Dyson tree, a hypothetical plant suggested by physicist Freeman Dyson ** ''Eufloria'' (formerly called ''Dyson''), a video game based on the idea of Dyson trees * , a United States Navy destroyer in commission from 1942 to 1947 * NOAAS ''Oscar Dyson'' (R 224), an American fisheries and oceanographic research ship in commission in the National Oceanic and Atmospheric Administration since 2005 * Dysons, an Australian bus operator * Dyson, a character in the Canadian television series ''Lost Girl'' * The Charles H. Dyson Sch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
