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UV Irradiators - UV Curing System

3-fan style UV lamp irradiator assembly

UV Lamp Irradiator Assembly | Irradiator Construction | Even Cooling
Efficient Cooling
| Our LIA's offer | Standard Irradiators


Lamp Irradiator Assemblies
Our UV irradiator assemblies are a complete retrofit systemOur proven LIA's (UV Lamp Irradiator Assemblies) are UV reflector assemblies which provide an instant solution to reliable cooling of UV lamps. These lamp housings provide mounting and a highly efficient method of focusing UV energy on to the curing surface. Many engineers find that the most time consuming aspect of building a UV curing system is controlling UV bulb temperature and focusing UV energy on to the curing surface. Incorrectly maintaining lamp temperature severely degrades the performance and life of any UV lamp.

Irradiator Construction

Cross section of UV IrradiatorsThese UV irradiators consist of a heavy-duty housing supporting a linear extruded heatsink and a reflective insert, which acts as an enhanced reflectance liner. The UV reflective material is in intimate contact with the heatsink extrusion allowing it to resist the heat-related yellowing that plague other non-heatsink based designs. In the event that the reflector sheet becomes damaged, it is easily replaced, minimizing down time.

Our UV dryer reflectors are designed specifically for each ultraviolet lamp size. They maintain optimum arc lamp operation temperatures on the medium pressure mercury vapor lamp envelope, end seals, and end-fittings. The irradiator forms an air-cooling plenum, cooling the ultravilolet lamp end-fittings and not over cooling the UV curing lamp envelope.

In addition to lamp cooling (these also work with a metal halide lamp) our Lamp Irradiator Assembly allows for cooling of the work surface and supporting the lamp above the substrate, reflecting UV energy in an efficient curing pattern.

Purpose of an irradiator assembly is to

  1. focus the lamp UV energy optimally for fast curing
  2. support the lamp above the substrate,
  3. maintain proper cooling of the lamp envelope, capillary, and end-fittings

UV Irradiators (reflector assemblies) are used in conjunction with other UV components, such as magnetic ballast, or metal halide ballast and arc lamp, to form a complete UV curing center providing effective UV drying of your product. Replacement UV reflector liners or UV reflector sheets and lamps are also available.


Even Cooling
The heatsink-based irradiator system provides thermal mass to allow even lamp cooling. This mass prevents transient changes in heating/cooling from being immediately transmitted to the lamp and impedes localized imperfections in cooling from manifesting themselves into thermal gradients. Heat sink based LIA’s are inherently a more robust approach to uniform lamp cooling and result in longer UV lamp life.
reflector assemblies UVPS light-house

 

Efficient Cooling
Optimizing cooling efficiency in an LIA is achieved by using a heatsink-based aluminum reflector, where the material has a high thermal conductivity and the design maximizes the effects of surface area and turbulence. Within reason, the more surface area the better the lamp cooling. Also important is turbulence, because of the skin effect in cooling. A thin layer of air surrounding a cooling surface acts as a thermal insulator impeding the effect of forced air-cooling. This layer needs to be disrupted by turbulent airflow, which can be created by providing irregular fins and fin geometries.
heatsink based reflector thin layer reflector

Our LIA's offer:
  1. Longer UV-lamp life.
  2. More UV energy to the curing target improving your throughput.
  3. Two focus versions.
  4. Faster development time in implementing cooling for UV curing equipment.
  5. No design or tooling investment required.
  6. Reduced parts count.
  7. Excellent option for UV retrofit system.
  8. Improved quality and better UV cure results through consistent cooling.
  9. Flexible lengths for almost any UV system: can be used for lamp arc lengths from 4 to 100 inches.
  10. UV Irradiators also have applications in ultraviolet blood irradiation, sterilization, water sterilizers, and air sterilizer.
Similar configuration to Hanovia UV end cooled reflector assembly
One of the most important features of our LIA's is the construction. This consists of a heavy duty extruded housing which contains an extruded reflector profile. Inside this reflector profile is a high UV reflectance metal insert, which conforms to this profile. In addition to being rugged, the extruded reflector provides a large mass, which dissipates heat evenly. It allows uniform cooling across the entire lamp length. AC fans with appropriate wiring and lamp mounting provisions are also included.

Two focus versions are available:
Elliptical version projects a one inch wide focus approximately 2.5” inches from the bottom of the LIA to the curing surface.
   
Non-focused (parabolic reflector) version projects an evenly diffused source of UV energy on the curing surface, approximately 4 to 5" wide.

How much longer is the LIA than the arc of the lamp?
Length of UV lamps used impacts LIA length
* Overall length is approximately 10 to 11 inches longer than the lamp arc length.

Standard irradiators

Part Number
Lamp Arc Length
Irradiator Length
HIR1004
4.00"
14.06"
HIR1006
5.31"
16.75"
HIR1008
8.00"
18.93"
HIR10012
12.47"
23.71"
HIR10018
18.47"
29.28"
HIR10020
20.00"
30.65
HIR10025
25.47"
36.28"
HIR10030
30.47"
41.28"
HIR10032
32.00"
43.09
HIR10038
38.47"
49.28"
HIR10042
42.00"
52.81"
HIR10048
48.47"
59.28"
HIR10050
50.00"
60.81"
HIR10055
55.87"
66.68"
HIR10060
60.47"
71.28"
HIR10065
65.00"
75.81"
HIR10072
72.00"
83.09
HIR10077
77.46"
88.28


* Above chart lists a few of our LIA's.

 

 
   

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Related UV Irradiators include: UV irradiators, reflector assemblies, reflector assembly, Lamp Irradiator Assemblies, Lamp Irradiator Assembly, lamp cooling, Lamp Housings, Lamp head, UV Dryer Reflectors, UV Reflector Sheet, UV lamps, UV reflector liners, reflective insert, UV reflector assemblies