Food & Technology

Trideck – IQF powerhouse.

Dohmeyer’s Trideck Tunnel revolutionizes industrial freezing by utilizing a vertically stacked, highly compact design that significantly increases production capacity and freezing.
March 17, 2026
4-5 min read
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Dohmeyer Trideck for advanced individual quick freezing

Reduce floorspace for industrial freezing with Trideck Tunnel by Dohmeyer.

One common feature of all cryogenic freezing equipment is the reduced space when compared to mechanical freezing solutions that requires huge compressor rooms and are generally more robust due to longer freezing process. But now imagine that you could make your process equipment even more compact.

That’s exactly the Dohmeyer’s Trideck Tunnel – a vertical stacking of freezing surface that delivers high throughput while using minimal space. More than 20% increase in freezing speed compared to our previous design. More than 100% higher product capacity in the same footprint compared to standard tunnels, all resulting in increased production. Additionally, thanks to our special design, we’re able to keep the cryogen longer inside the tunnel, thus lowering cryogen consumption and reducing the average cost per kg of product by 4% - saving typically approx. 60.000 EUR per year.

With Trideck you’re looking at a very low CAPEX compared to investment in mechanical freezing solutions and an economical OPEX when compared to competitors’ cryogenic solutions. All of this means that the ROI can be achieved in under 4 years, that’s one of the fastest return on investment achievable for capital equipment of this class.

A front view of Dohmeyer Trideck Tunnel Freezer
A close-up of Dohmeyer Trideck seen from the front.

Hygienic design industrial freezer is the new golden standard.

How many times did you encounter a problem of bacteria growth in equipment gaskets? And once it started, the issue won’t go away easily. What about inflated maintenance time due to extensive cleaning during each maintenance stop. Not to even mention the crevices creating high risk for leftover product residue. That’s why Dohmeyer’s equipment is always designed with hygiene requirements in mind.

·       no-seal design – we eliminate contamination risks and help your business avoid costly product recalls;

·       hygienic-friendly geometry – our design focuses on equipment geometry optimized for minimal crevices where product leftovers could create bacteriological problem;

·       automatic belt cleaning – we significantly cut down time needed for cleaning, so that your workforce focus stays on production;

·       optional Hygiene Eye-Link belt – increase your production hygiene level with special belt design;

Flexibility and scalability – futureproof your production

With Trideck Tunnel, like with any other Dohmeyer-made equipment, you can choose between multiple sizes to meet your production needs and to fit it in your available workspace. It is very important to note, that cryogenic freezing equipment requires much less space than its mechanical freezing counterparts, as the freezing process takes place a lot faster, within shorter distances. Additionally, using cryogens does not require building complex and robust compressor system.

With Trideck Tunnel, you not only shorten the physical process distance due to use of highly effective cryogens, but also because the freezing takes place on three belt-levels stacked vertically one upon the other, therefore making the equipment take up much less space in the room and still getting excellent results.

Depending on the availability of cryogens in your area you can choose between the use of liquid nitrogen and CO2, thus giving another point of flexibility when choosing the right solution for your business.

Thanks to possibility of storing different tested recipes, the Trideck Tunnel allows for a quick product changeover, which in pair with hygienic design creates more opportunities for your business.

Dohmeyer Trideck Tunnel opened up, top-lifted
Dohmeyer Trideck tunnel closed, seen from the back.

Data & Analytics

Data is king. Now it’s truer than ever. That’s why modern production equipment must be interconnectable within the company’s systems. Dohmeyer equipment – Trideck Tunnels included – can provide just that.

·       Real-time performance monitoring – without the insight into operational efficiency, the management level is blind, and you cannot have that. You need to make data-driven decisions and catch production deviations before they impact quality or costs.

·       Production data-logging – classic, manual record-keeping, was always prone to errors and took time. Automatic recording of batch data for quality assurance and traceability is the current standard, allowing your business to pass audits effortlessly and allowing your production team to respond instantly to quality inquiries with complete set of digital records available at hand.

The monitoring we can provide is made according to specific Clients needs, so that you can choose the exact level of process insight you will get. You can monitor the very basic functions like ventilators, alerts, etc. But – if stated so – Dohmeyer can provide more advanced access to process information.

Safety should never be an issue

At Dohmeyer, we know cryogens and we know exactly what dangers they pose. Throughout years of design, testing and servicing, we have witnessed a lot of potential safety risks, and we took upon ourselves a mission that the equipment we deliver is as safe for use as possible.

That’s why our Trideck Tunnel features vacuum insulated manifolds to prevent cold burn injuries – not only damaging your safety record, but also very hard to heal. We also include an integrated cryogen return valve, redirecting cryogen back to storage, instead of just venting it into the room. We also include redundant safety systems wherever our experience deems them necessary.

Global support – ‘you will never walk alone’

As Dohmeyer’s Customer, you have access to the 24/7 global technical support. We understand how valuable your production time is, and how costly the halts can be. Our technical support is available through phone or e-mail at any time of day and night. We aim at minimizing your line downtime to an absolute minimum by providing online support, regular maintenance visits, comprehensive training programs for your maintenance teams and critical spare parts availability.

Everything to make your production back on-line in no time.

Dohmeyer Trideck viewed from the side.

Let’s turn your process challenge into a technical solution.

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