Specifications

110
Asbestos sheet : This is placed below the heating element and mica insulation to serve as a
heat insulator. Also It reduces the heat loss in the kettle.
Sole plate : The sole plate is made of cast iron and is of flat surface. It is provided to keep the
heating element in closed contact with the container and to avoid deformation of the element
when heated.
Pressure plate : This is made of cast iron and is fitted on the middle bolt, by a nut. The pressure
plate holds the sole plate in position. If this pressure plate is loosely fitted, the sole plate and the
heating element become loose. This leads to expansion and contraction of the element during
working and the element will get damaged.
Bottom cover : The bottom cover is fitted to the central bolt of the body by a nut and washer. The
terminals and heating elements can be viewed or accessed on removal of the bottom cover.
Working : The working principle is same for both of water kettle. When electric supply is given
to the heating element of water kettle, the current that flows through high resistance heating coil
produces heat. Thus water kettle converts electrical energy into heat and the water inside the
kettle gets heated due to convection.
1. Bolt, nut and washer holding bottom cover
2. Heating element
3. Asbestos sheet
4. Sole-plate
5. Pressure plate
6. Bottom cover
7. Handle
8. Top lid
9. Ebonite leg
10.Outlet socket
11. Brass strips
Fig.10.3 - Saucepan type Electric kettle
Sl. No. Swan Neck type Saucepan type
The heating element should not be heated without
water. The water lever always above the heater
element. Otherwise element gets overheated and may
burst.
No such fear. Without adequate water,
the heating element may be heated.
1
Cool water should not be poured on heating element
when it is hot
As the heating element is in separate
room, the water can poured at any time.
2
As the heating element has direct contact with water,
possibility of heating element getting damaged is
high. So reduced life.
As there is no direct contact with water,
heating element has long life.
3
Heating time is less as the heating element is in
direct contact with water.
Heating time is more as the heating
element is in separate room.
4
10.4 MERITS AND DEMERITS