Nichirei Akashicho Building 6-4 Nichirei Akashicho, Chuo-ku, Tokyo 104-0044 Japan Tel : 81-3-3543-8491 / Fax.: 81-3-3545-9219
Total Engineering of Light and Heat by Miyakawa Such needs as “Raise temperature in a short period” or “Make the heating space compact” are growing in recent days and it is “the Halogen Heater (near infrared)” that realizes these targets. Miyakawa has been working for over 15 years on the research and development of the “Halogen Heater” to turn it to practical use for the industrial energy. Now, we feel proud of being able to provide with its technology and knowhow accumulated for long years.
FEATURES 1> High Efficiency
4> Long Life
More than 85% of input electric power is converted into the infrared. The reason for this high efficiency is that the radiated energy from directly heated metal at high temperature is utilized without the generation of useless energy.
Halogen heaters are designed for long life – more than 5,000 hours at an average rate except certain types - due to halogen cycle effects (the function that reins in wearing of tungsten heater by sealing halogen gas in). Reduction of output to the life end
2> Concentration of Energy The energy can be concentrated by optical methods
point is as low as several percent. Thus, handling is easy and economical.
such as reflectors. It is possible to concentrate to 15 Life characteristics
3> High Controllability
Relative output [%]
Rise time characteristics
5> Heating in vacuum There are types which can be installed in vacuum. When using the out-of-vacuum types, if the container Time[sec.]
As tungsten heater with low heat capacity is used, heat-up and cool-down are almost instantaneous and output control is done electrically with perfect freedom. And as concentration and diffusion of energy are possible by optical methods such as mirror and lens, this is highly controllable heat source.
Relative output [%]
joules per square cm.
is infrared ray-transmissive, the object in the vacuum container can be heated. 6> Downsizing Big feature of Halogen heater is light weight and possible downsizing. In narrow places or places where other heat sources are hard to bring in, the installation is possible. And handling is very easy, because structure and function are simple.
Fig. 1 Round bases and lead wires
Base Holder Base holders to match base configurations shown below
Fig. 2 Metal plate
Square bases and lead wires
Near-infrared heater (clear type) RATED
For round bases and
For square bases and
LENGTH L1 (mm)
QIR-C200V 1000WC 200
Attention) Maximum operating temperature at molybdenum foil seal is 350℃
Option Black coating type (far-infrared ray heater) Coated by special ceramic coating on the surface of heating element, this type converts almost 100% of visible radiation output and 70∼80% of near and middle infrared output to far-infrared ray. Compared with the amount of far-infrared ray generated by regular halogen heaters (clear type), the amount is 2 ∼3 times and peak output wave length becomes 3µm∼4µm.
Vacuum specification QIR heater As ceramics or cement are used on the base portion of normal QIR heater, gas and fine particles are discharged when used in vacuum, causing certain troubles.
constructed without using these materials. As a result, the heater can be used in vacuum without fail. However, as service conditions vary depending upon degree of vacuum and temperature of QIR heater’s sealed part, if the heater is used under specific condition, please consult with the Manufacturer.
White coating type (equipped with reflection coating) By white-coating outside surface of heating element, infrared is emitted effectively in a single direction. By doing this, reflector and other attachment can be omitted, then downsizing and space-cutting of system can be
±4°against horizontal plane. If used over this limit, extreme short-life or other faults occur. This vertical type is recommended for use over allowable angle. If there are any unclear points with regard to use conditions, please contact with the Manufacturer.
The Manufacturer will comply with the customers’ demands with regard to dimensions and ratings etc of all products regardless the quantity..
Comparison of energy distribution and efficiency, etc. Energy distribution of the infrared rays Electromagnetic waveｓ with wavelength of 0.8µm to 1mm
Near infrared ray
(1,000µm) are collectively called infrared ray. As shown in the left figure and the following table, they are divided into three categories. These three, that is, near, middle and far infrared rays have major characteristic respectively.
Relative radiation strength (%)
Middle infrared ray
Near infrared ray (i.e. halogen heater) is the highest in energy efficiency and its big characteristic is that its energy is concentrated to around 15J/cm2. Therefore, high temperature
Far infrared ray
heating is possible and the compact system can be composed. Black-coating tube, an option of halogen heater, radiates far infrared ray effectively and its buildup time is very quick, several tens of seconds, compared with general far infrared rays. That is a big advantage in use. Wave length (µm) Group
Near infrared ray
Build-up time Color
Applications of halogen heaters
60 – 65%
30 - 60 sec.
5 – 10 min.
1100 – 1200K
700 - 800K
<1 sec. 2450K
Far infrared ray
80 – 85%
Energy efficiency Power density
Middle infrared ray
Electricity ・Electronics ●Soldering ●Drying of resin coating ●Drying of printed circuit boards ●Hardening of package sealer
●Drying of markings
●Drying and baking of paint ●Drying of metalizing coating and alumite
Plastics ●Drying of material and power pellet
●Drying of casting mold
●Preheating prior to shape forming
●Quick water drip drying
●Downsizing of dry air furnace
●Gelling and heated foam formation ●Bond hardening
Paper ・Printing ●Drying of watered paper
●Offset and gravure printing
●Starting of fabric
●Burning treatment of printing matrix
●Drying of dyeing/printing
●Drying moisture after coating
●Waterproofing/shrink-proofing of wool
●Drying after vanish/vinyl coating
●Backing of carpet ●Drying of fabric
Painting ●Drying of paint ●Baking of paint ●Electrostatic hardening of fine particles
CAUTION about safety of the halogen heater
Do not cover halogen heater in use with flammable object (paper, cloth or plastic for example) or move them closer to halogen heater.
It may cause a fire.
Do not drop, scratch or direct unreasonable power to halogen heater.
Broken pieces of glass
may fly apart, causing physical injury because inside pressure of halogen heater is high. Use confirmable appliances such as socket, electric source and others.
In case of
nonconforming, it may cause overheating or short life. If lighting direction of heater is designated, never fail to use the heater in designated direction.
Otherwise the appliance may overheat or be transformed, causing extreme short
life. Never fail to turn the power off when installing, uninstalling, checking or cleaning the heater. Otherwise, it causes breakage of the heater or electrical shock.
As halogen heater is at high temperature while it is lighting or immediately after switched off, never tough it with bare hands.
It causes burn injury.
Do not touch halogen heater directly with bare hands even in cold condition.
If lighting it up
with hand grease on its surface, glass deteriorates and the heater life becomes short.
heater becomes tainted, wipe it out cleanly with alcohol etc. and use it (When handling halogen heater, use clean gloves.) In order to prevent contact failure, dropout from fixture or fall-down, install halogen heater surely to socket or mounting terminals. Do not use halogen heater at more than specified voltage.
Using at more than specified
voltage will result in extreme short life or heater may be broken depending on conditions. Check if socket and contact portion are not damaged and confirm there is no deformation, rust or taint.
They may cause faulty lighting or cause of overheating.
Do not use where water drop or rain falls. dusty surroundings.
Do not use in high temperature, high humidity and
They may cause overheating and breakage.
Rush current Resistance at room temperature of tungsten used in halogen heater is around 1/10 of that of operating time. Therefore, at the moment voltage is applied to halogen heater, large rush current flows in. To answer to it, it is necessary to take into consideration for current circuit design such as heightening the impedance of heater circuit. Temperature of sealing portion and life time Sealing portion is made of molybdenum foil and quartz glass. As when temperature of sealing portion rises over 350℃, life time becomes short quickly, so keep temperature of sealing portion below 300℃ in use. ★
Specifications and appearance may be revised for improvement without prior notice.