It uses a bimetallic strip to operate the switch which is connected in series with the resistance (or) heating element.The bimetallic strip is a simple element which converts a temperature change into mechanical displacement. NIS200TS - ELECTRIC STEAM IRON iron pdf manual download. As the popularity of handheld electric irons took off, sales were propelled even more by the introduction during the early 1950s of electric steam irons. The entire assembly of mica sheet, nichrome wire and contact strips are riveted together resulting in a mechanically sound and robust construction. Thus the supply to heating element is temporarily stopped (until the temperature goes down to normal). The two metals should have a different coefficient of expansion. There are various electrical inventions used for domestic purposes such as the electric fire, electric iron, and electric water heater that all depend on one common principle; when a current is passed through a piece of wire, the wire heats up and emits heat radiation. The heating element consists of nichrome wire wound around a sheet of mica. This heat is distributed and used for various purposes. One end of the pilot lamp is connected to supply, while the other end is connected to the heating element. Sign in with Facebook A bimetallic strip consists of two different metals bonded together. For maintaining the optimum temperature, a thermostat is used along with pilot lamp which serves as an indicator.Mercury Vapor Lamps - Benefits, Health Hazards and PollutionElectronics Engineering Jobs: Insight to Electronics Engineering as a Career Option In 1892, hand irons using electrical resistance were introduced by Crompton and Co. and the General Electric Company, allowing for the regulation of the iron’s heat. For this purpose we can see two or sometimes three studs in the base plate. The principle of the electric iron is that when current is passed through a coil, the coil gets red hot and transfers the heat to the base plate of the electric iron through conduction.In the earlier days steam irons were used, but now the electric iron is preferred over the steam ones.
It is pressed hard between the two plates. So to suit the temperature required for different kinds of fabrics, we use the temperature control.The sole plate is the thick, triangular-shaped slab of iron that forms the base over which the electric iron is built up. But frequent making and breaking of circuit damages the contact points and it may also result in interference with radio reception. Learn more about how this works with information on the electric iron invention. In this article, we will discuss about the v… The contact strips are connected to the terminals of the iron. View and Download Panasonic NIS200TS - ELECTRIC STEAM IRON user manual online. When the temperature rises significantly, the unusual expansion causes the strip to curve and the contact between strip and contact spring opens. What is the purpose of this element in an electric iron?The bimetallic strip is attached to a contact spring through small pins. HTML Link: This works on the basis that the combination of heat and pressure removes wrinkles. Electric steam iron. As the steam iron gets used, slowly the minerals from the water accumulate at the vents and blocks the water from passing through. If such a strip is heated, it starts to curve towards the metal having the lower co-efficient of expansion. Electric Iron iron pdf manual download. Besides that mica can also withstand very high temperatures. All Rights Reserved. The bottom surface and edges are heavily chromium plated, to prevent it from rusting. There are two reasons for which mica is chosen in the heating material. Now to remove the wrinkles in clothing, we should apply heat and pressure. Studs can also be used for this purpose.The pilot lamp is housed in the cover plate of the electric iron.
Bhatia Iron Handle - Manufacturer of Electric Iron Handle, Electric Iron Plastic Moulds & Electrical Plugs & Holders from Delhi, India To avoid this, a capacitor of certain range is connected across the two contact points.When a current is passed through the heating element which is placed between the sole plate and pressure plate, the element gets heated up and transfers its heat to the sole plate through conduction and in-turn the sole plate also gets heated up.
Mica is a very good insulating material.
Also … In this article, we will discuss about the various types, parts, and theory of operation.An electric Iron is a general household appliance used to press the wrinkles out of the clothes. In some iron the pressure plate is heavy and made of cast iron while in some other cases, it is a thin sheet of steel, about ¼ cm thick.In automatic type of electric iron, the pressure plate has a rectangular or circular hole for locating the thermostat.The heating element is present between the sole plate and pressure plate. The base plate should hold the iron pressure plate and cover plate in position. The handle and connector are only attached to the cover plate.The handle can be made either with wood or with plastic. If you want to know more or withdraw your consent to all or some of the cookies, please refer to the Steam irons usually have vents through which the water passes. Steam irons have some maintenance issues due to clogging. The two ends of the nichrome wire are connected to the contact strips. This heat is distributed and used for various purposes. Heat is formed due to the coil and when we press the clothes with iron, the wrinkles are removed.
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