INDUCTION HEATING SYSTEM FOR BARREL

SYSTEME DE CHAUFFAGE PAR INDUCTION POUR CYLINDRE

English Abstract

A cylindrical barrel with electromagnetic induction equipment, The
electromagnetic induction heating
method used in this invention has the following advantages in comparison with
the existing heating
methods: (1) being energy efficient, with heating efficiency of up to 90%,
this is attributed to the direct
heating which has not heat loss in transmission. And beyond the working time,
the electricity in the
standby mode is sufficient, this saves electrical power; (2) fast heating,
able to reach the target
temperature in seconds and increase the accuracy of temperature control; (3)
partial heating enabled, as
heating is controlled by the module at certain part; (4) consumption materials
efficient, as it reduces the
damages of heating belt or cable caused by the conventional method in which
the temperature of the
heating belt or heating cable must be higher than that of the barrel; (5)
environment friendly, contributed
by the low heat emission, this also saves the energy used by air-conditioning
needed in the previous
scenario.

Claims

Claims


1. A cylindrical barrel with electromagnetic induction equipment (hereinafter
referred to as the
Barrel) composed of (1) an induction coil cable, which is installed on the
metal Barrel; (2) a power
exchange module, which can be of one individual or more; (3) insulating
sleeves fitted between the
Barrel and the induction coil cable.
2. According to article 1 in this Claim of Rights, the induction coil cable
fitted on the metal Barrel
can be of single layer or double layer.
3. According to article 1 in this Claim of Rights, the induction coil cable is
controlled by the power
exchange module, which can be of one individual or more.
4. According to article 1 in this Claim of Rights, fitting more than one power
exchange modules is to
prevent failure to the heating of the barrel caused by the failure of one or
more modules.
5. According to article 1 in this Claim of Rights, there shall be insulating
sleeves between the Barrel
and the induction coil cable.

Description

CA 02626462 2008-04-01
DISCRIPTION

1. TECHNOLOGY

The most commonly used heating method for barrels is as follows: heating belt
or heating cable is used
on the exterior of the barrel to produce heat energy which is directly
transferred or eradiated onto the
barrei until reaching the satisfactory temperature. The deficiencies of this
heating method are: (1) the
heating unit has low heat efficiency at approximately 70%; and (2) huge heat
loss is occurred during the
process of transmission or radiation, which results in low efficiency of the
total usage of heat energy at
about 35-60%; and (3) the temperature of the heating belt or cable must be
higher than that of the barrel,
which results in serious damages of the heating belt or cable.

2. FIELD OF INVENTION

This invention does not use the above-mentioned heating method in which a
heating belt of heating
cable is fitted on the barrel to produce heat energy; it adopts the eddy
current generated by the
electromagnetic induction coil cable directly on the barrel to produce heat.

The electricity is transformed into high-frequency current through the
induction power generator (Exhibit
1) and transmitted onto the heating coil cable, the high-frequency current is
transmitted through the coil
cable and generates eddy current inside the metal barrel and thus produce heat
for the barrel (Exhibit 1).
The induction power generator can be of one unit or more (Exhibit 2),
depending on the specific length of
the barrel and the requirement on the rate of power in heating. The use of
multiple generators is helpful
to ensure the temperature of the barrel in case of failure in one or more
units.

3. ADVANTAGES

The electromagnetic induction heating method used in this invention has the
following advantages in
comparison with the existing heating methods: (1) being energy efficient, with
heating efficiency of up to
90%, this is attributed to the direct heating which has not heat loss in
transmission. And beyond the
working time, the electricity in the standby mode is sufficient, this saves
electrical power; (2) fast heating,
able to reach the target temperature in seconds and increase the accuracy of
temperature control; (3)
partial heating enabled, as heating is controlled by the module at certain
part; (4) consumption materials
efficient, as it reduces the damages of heating belt or cable caused by the
conventional method in which
the temperature of the heating belt or heating cable must be higher than that
of the barrel; (5)
environment friendly, contributed by the low heat emission, this also saves
the energy used by air-
conditioning needed in the previous scenario.