This Koppens HLT is a used hot air tunnel oven, sometimes referred to as a tunnel cooker, designed to cook or heat food products continuously as they pass along a conveyor belt through an enclosed heated chamber. Koppens is a well-established Dutch manufacturer specialising in high-capacity processing equipment for the food industry, particularly for the production of meat-based snacks, burger patties, and other formed or coated food products.
Built in 1993 and located in the Netherlands, this machine features a belt width of 600 mm and a cooking length of 9,000 mm, giving it a substantial throughput capacity suited to industrial production lines. The primary heat source is thermal oil, with a heating capacity of 240 kW, providing consistent and controllable heat transfer across the full length of the tunnel. Steam is also required, at 4–8 bar pressure with a consumption rate of 900 kg/hr at 95°C, which points to the oven's use of a steam-assisted cooking environment in addition to circulated hot air. Cooling water is supplied at 3–5 bar, with a flow rate of 0.5 m³/hr, and compressed air is required at 6–8 bar with a consumption of 120 nL/min.
Electrical supply requirements are 3 x 380 V, 50 Hz, with an electrical power draw of 9.2 kW. The overall dimensions of the machine are 10,200 mm long by 2,000 mm wide by 2,750 mm tall, and it weighs 6,250 kg, reflecting its robust, industrial-grade construction. The machine is offered in used condition.
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