Manufacturing know how and the development of Heat Pipe Coolers for power semiconductor
elements has been maturing for years. We manufacture custom made products and can satisfy
individual requirements of customers.
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| Free convection |
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Forced circulation |
Gravity heat pipes for power semiconductor elements such as diodes, transistors, thyristors,
integrated circuits (IGBT modules) are a mainstay of HPM Therm development and production.
Normally the elements contact the pipes which are the evaporative section and the condensation
section [usually the fins] is cooled by air.
Gravity heat tubes work upright or in an angle up to 5o from horizontal with the condensation section set above the evaporative one. Air-cooling is realized by
free convection (chimney effect) or by air feeding with the help of a ventilator.
Some of the standard types of coolers:
1,2 - for forced circulation
3,4,5,6 – for free convection
* adjustment of some design dimensions is available after consulting the manufacturer
Some of the models produced:
7, 8, 9, 12 – for forced circulation
10, 11 – for free convection
| Fins |
Standard smooth |
| Spacing of tubes |
23; 25; 28,5; 30 mm (next to each other) |
| Spacing of fins |
2,0; 2,5 ; 3,0 ; 4,0 ; 5,0 ; 6,0 mm (acc. to type and application) |
| Material |
Aluminium 0,25 ; 0,5 mm |
| Coating |
No coating, electrophoresis, powder coating RAL 9010 |
| Tubes Cu |
5/8“ Mechanically attached to the fin |
| Base blocks |
Aluminium |
| Heat resistance Rth |
Rth = Δt / Q (K / W)
(We assess by measuring after exact operating conditions have been defined.) |
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