HK 213 Heating-cooling assembly with integrated fan, for standard air cooling

Application areas:

Heating/cooling of extruder or injection moulding cylinders.

Construction/version types:

Narrow ceramic heater bands KH 211 (however WITHOUT insulating filler) of widths 33 mm, 48 mm, 63 mm and 78 mm (widths above 78 mm possible in special cases) are fitted at regular intervals in the bottom half of a housing using fixing bolts.

A compact fan in addition to specially-shaped air deflectors for distribution of the cooling air in the axial and tangential directions are also integrated in the bottom half of the housing.

The individual design of these air deflectors ensures the best-possible even circumfluent flow around the cylinder, and therefore counteracts any undesirable bending of the cylinder and corresponding wear.
The individual heater bands have been electrically connected at the works.
The spacious electrical connection chamber, which stands out due to its optimum accessibility, is located on the side of the fan housing.

An electrical supply cable of a defined length can be connected at the works if required. Likewise electrical connection can be made through industrial plugs.

The air outlet opening is implemented as standard in the upper part of the housing with air slots.
Additional air deflectors can be fitted to the air outlet opening as an option.  

Sensor bores and apertures will be taken into account as far as technically possible.
The completely removable housing cover and the spreadable ceramic heater bands ensure ease of installation.  

Also available in UL/CSA certified version on request.

Technical specification:

Mat. housing: 0,8 mm aluminised sheet steel (stainless steel on request)
Voltage / tie-in: according to specification
Heating capacity: max. 7 W/cm², related to the heater bands
Operating Temperature heating element _max.: 300 °C (special version to 500 °C)
Diameter: from 80 mm
Width: from 240 mm
Wall thickness: 36,5 mm (with bolted heater bands fixing; assembly of cooling element KE 300 possible at suitable spacing of heater bands)

Accessories:

Single or double fans.
An ideal supplement for amplifying the cooling capacity is provided by the flexible aluminium KE 300 cooling elements, which can be mounted on the free cylinder surfaces between the heater bands.

Ecowema:

In order to reduce the energy consumption and the thermal dissipation, a 25 mm thick thermal insulation can be integrated in the housing depending on the cylinder diameter.
Alternatively, the flexible ISOWEMA insulation can be used.
In order to prevent convection heat loss, the ecowema® - air flap system can be fitted at a „12 o`clock“ fitting position.

Electrical Test Data

Power tolerance: ± 5%  

Unless otherwise specified, our heating elements are rated IP30.
Special versions with a higher degree of protection can be manufactured upon request.