The present invention relates to an electric heater, which electrically
and mechanically protects heating means from the outside, increases
heating value and thermal conductivity by increasing contact efficiency
among components, and improves assembly efficiency and productivity.
The electric heater includes: a plurality of radiation members,
each having a radiation fin and a radiation fin supporting plate
surrounding the radiation fin and formed integrally with the radiation
fin by brazing; a plurality of flat tubes arranged between the radiation
members and having heating means therein for generating heat when
electric power is supplied; first and second support frames oppositely
arranged at sides of the outermost radiation members for supporting
and fixing the radiation members and the flat tubes; and first and
second caps for supporting both end portions of the first and second
support frames and both end portions of the flat tubes.
A heat conductive tubular electric heater is disclosed. In the
heater body, a water inlet tube is connected to a heat conductive
tube and an electric tube is installed within the heat conductive
tube so as to form a water path between a periphery of the electric
tube and an interior of the heat conductive tube. When the cool
water flows into the water inlet tube entering into the electric
heater, the cool water can be heated continuously by the electric
tube to increase it's a temperature thereof and is heated. Besides,
the heat conductive tube is assembled within a water storage tank
of the electric heater for being stored therein for further use.
The heater is worthy for industrial uses, because of some advantages
thereof, such as heating water fast, high thermal efficiency.
An electric heater is provided with an identifying resistor associated
with a connection between the heater and a fan control. When the
electric heater is connected to the control, the identifying resistor
provides information with regard to the capacity of the particular
electric heater that is being attached to the control. The control
then utilizes this particular capacity to control both the electric
heater and an associated fan motor.
An electric heater has multiple zones, wherein the multiple zones
include at least one zone which is subject to high loading (e.g.
bottom zone) and, at least one zone is a non-metal heating element,
and the rest of the zones (e.g. middle zone and top zone) are metal
resistance heating elements of light gauge overbent.