A dryer is a home appliance used to dry clothes after they have been washed. Its most basic functioning consists in the induction of hot air inside a rotary drum of variable capacity; this drum will slowly rotate clothes. The drum may be of stainless steel, ceramic or even aluminum or zinc alloys. In some cases hot air inlets rotate with the drum while in others they are static and only the clothes turn.
All dryers have some kind of filter where lint from the clothes is collected as well as some kind of optical or acoustic system to warn the user about the saturation on set filter.
Frenchmen M Pochon built in 1800 a hand turned clothes dryer. J. Ross Moore, an inventor from North Dakota created designs for automatic clothes dryers during the 20th century. His design for an electrical dryer was developed and launched to the public in 1938. The Industrial designer Brooks Stevens created the first electric dryer with a glass window in the 1940’s.
Vented Dryer: Damp air is expelled to the exterior with the help of an extensible tube of about 12 cm diameter. This tube must go out of the room either thru a wall or by a half open window. The maximum length of the tube should not exceed the two meter approximately; to prevent the occurrence of steam condensation on the exhaust tube.
Condenser dryer: damp air is directed to a condenser where it is abruptly cooled; forcing the conversion into liquid water which is collected in an accessible container. This container must be emptied after every time the machine is used. The main advantage of this system lays in the fact that it does not require any kind of system installation nor does it need tubes leading to the exterior; it only requires an electric inlet. Eventually you can connect a drain system appropriate for the dryer design if you don’t want to empty the drain deposit after every use. The price of a condenser dryer is higher than the price of a vented dryer but on the other side, a condenser dryer uses as average half the energy of a condenser dryer.
Both designs may have some form of timer system, (usually a dial where you can set the desired functioning time) or electronic sensors (that can automatically detect the degree of humidity of the clothes and interrupt functioning as it reaches preset settings. Dryers of 5 or 6 kilograms of capacity (load) have a standard size of 85x60x60 and can be placed directly over the washer. There are also some smaller size dryers; about 3 kg capacity, that can even be installed hanging over the wall.
A Centrifuge clothes dryer is a home appliance very common in Latin-American countries. It is used after clothes are washed. Clothes are loaded to the storage drum (a cylindrical drum usually made of stainless steel and with holes on it), to remove the water (by the use of centrifugal force). It has the drum connected to an electric motor, which can make the drum rotate at a very high velocity. In this manner water is removed and exits the device by an exhaust located in the lower area of the device. Can either be directed to a drain or a deposit.
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