Wholesale Freeze Dry Fruits And Vegetables Machine Manufacturers

Sieno Freeze-drying Technology Research Institute (Jiangsu) Co., Ltd is one of the freeze dry fruit machine manufacturers based in Changzhou, Jiangsu, China and a custom fruit freeze dryer machine supplier for food plants. We design and build vacuum freeze dryers in-house and supply the equipment around them — bubble cleaning, slicing and dicing, quick-freezing, screening and nitrogen-flush packaging — so a fruit and vegetable plant is delivered as one coordinated line rather than a set of unconnected machines.

Our work addresses the shift from pilot batches to year-round commercial output: freeze-dried strawberry, mango, apple, banana, jackfruit, pineapple, peach and mulberry, vegetable crisps, soup blends and smoothie bases. Sizes run from laboratory and small-scale units to industrial cabinets and multi-shelf systems, configured from the product, the tray format and the production target, whether the order is a wholesale freeze dry fruit machine or a custom vegetables freeze dryer machine.

The Fruit and Vegetable Range We Build

The range covers every step between harvested produce and sealed retail pack. Each machine can be ordered on its own, but the settings, tray formats and throughput are matched across the line so that pre-treatment, freezing, drying and packing work at the same pace.

How Each Machine Fits and What We Confirm

For every custom freeze dry fruit machine, configuration starts from the working point rather than from a catalogue number. The table shows how the six machine types divide the work and which project data we need before issuing drawings.

Application Fit and Produce Considerations

Freeze-drying suits high-value produce where colour, aroma and rehydration matter more than the cost of the cycle. Soft berries and ripe stone fruit demand careful handling and a fast pre-freeze; dense vegetables and apple slices tolerate higher tray loads but need longer cycles. Sugar-rich fruit such as mango and jackfruit behaves differently again, since a high solids content lowers the practical collapse temperature and narrows the working window.

Slice geometry is the most useful lever we have. Thinner pieces shorten the cycle and improve uniformity, but a piece that is too thin crumbles in the screener and packs at a higher bulk volume.

• Whole or halved fruit: best appearance; longest cycles and the highest demand on shelf temperature uniformity.
• Sliced and diced fruit: the mainstream retail and ingredient format; balances cycle time, breakage and pack density.
• Vegetable crisps and pieces: blanching and cut consistency drive texture; screening quality controls the grade split.
• Powders and blends: downstream milling for smoothie bases, soup mixes and ingredient supply.

Critical Specifications and Capacity

Capacity in this category is a function of shelf area, load depth and cycle length, not of a single headline figure. We therefore quote against a defined working point and state the assumptions alongside it.

• Shelf area and tray count: the base number from which batch load and daily output are derived.
• Cold trap and vacuum performance: must hold low pressure throughout peak sublimation, when water vapour load is highest.
• Shelf temperature control: heating and cooling rates, plus distribution across the shelf during the cycle.
• Residual moisture target: agreed per product, since it sets the end point of the cycle and the shelf life of the pack.
• Cycle time and daily throughput: stated with load, thickness and moisture assumptions so the figure can be verified.
• Utilities: power, cooling water, compressed air and nitrogen demand at the installed configuration.

Our engineering team has designed and delivered a 200 m² industrial freeze-drying system, and the same modelling approach is applied to smaller cabinets: process modelling first, then the mechanical and refrigeration design.

Controls, Data and Line Integration

The control system is configured around the temperature and vacuum curve the product needs, and around the way your operators actually run the plant. Recipes are stored per product so a validated cycle can be recalled rather than rebuilt.

• Temperature sensors and vacuum measurement tied into the drying program, with readings logged for batch records.
• Recipe management for multi-product sites, so changeover between fruit types does not require re-programming.
• Alarm and interlock logic for vacuum loss, refrigeration deviation and over-temperature conditions.
• Interface points agreed with the quick-freeze warehouse and packaging machines where a continuous line is required.
• Control hardware and sensors selected for precise regulation of temperature, vacuum curve and drying process.

Factory Testing, Compliance and Acceptance

As a China freeze dry fruit machine factory, every unit is built through the full sequence on our own site — cutting, welding, assembly, debugging and factory testing — with a QC team supervising each stage. Before dispatch, each machine is measured for low-temperature performance, vacuum tightness and freeze-dried performance against the agreed project standard.

Acceptance is therefore a documented event rather than a handover conversation. We supply complete production drawings and a factory layout proposal, and where a new product is involved we run process test samples so the drying curve is proven before the line is installed. Manufacturing holds CE, ISO 9001, ISO 22000:2018 and IRADSTM certification; the applicable evidence set is issued with the order documents.

Maintenance, Spare Parts and Upgrades

A freeze dryer is judged on its hundredth batch, not its first. Daily routines on fruit and vegetable equipment centre on hygiene, vacuum integrity and refrigeration stability, and we build the machine so those checks can be carried out quickly.

• Chamber, tray and condenser cleaning with food-grade agents, followed by sanitisation of contact surfaces.
• Vacuum pump oil level and condition, hose and seal inspection, and leak checks.
• Condenser coil and fin cleaning, refrigerant line inspection and temperature display monitoring.
• Gasket and seal inspection, with food-safe lubricant where specified and immediate replacement of damaged seals.
• Air filter inspection, temperature sensor verification and electrical connection checks.
• Daily logbook entries supporting trend analysis and food safety records.

Consumables and wear parts — vacuum pump oil, gaskets, seals and filters — are identified in the documentation so a replacement stock can be held on site. We also support equipment maintenance and upgrade programmes for lines already in service, including control and process improvements.

Information We Use to Configure Your Solution

A proposal is only as good as the working point behind it. These are the inputs that let us size the dryer, select the auxiliary machines and state a realistic cycle.

Frequently Asked Questions

Do you supply only the freeze dryer, or the whole fruit and vegetable line?

Both. As freeze dry fruit machine suppliers and vegetables freeze dryer machine suppliers, we build the vacuum freeze dryer and also supply bubble cleaning, slicing and dicing, quick-freezing, screening and nitrogen filling packaging equipment, plus the process support that connects them. Single-machine orders and complete lines follow the same engineering review.

What capacity can Sieno build?

The range covers laboratory and small-scale units up to industrial multi-shelf systems; our team has designed and delivered a 200 m² industrial freeze-drying system. Capacity is always quoted against a defined product, tray load and cycle time, so the figure can be checked against your own production plan.

How is a drying recipe established for a new fruit product?

We run process test samples and agree the temperature and vacuum profile with you before the line is finalised. The validated cycle is then stored as a recipe in the control system, and operators receive technical training so subsequent batches follow the same curve.

Which certifications apply to the equipment?

Our manufacturing holds CE, ISO 9001, ISO 22000:2018 and IRADSTM certification. The certificates and declaration documents relevant to your order are issued with the delivery documentation.

Who carries out installation and commissioning?

Installation and debugging are handled by our in-house team, from initial planning through to commissioning, rather than through third parties. This keeps the equipment settings, the process recipe and the acceptance record with the same engineering group that built the machine.

Can the same line handle vegetables and other freeze-dried products?

Yes. As vegetables freeze dryer machine manufacturers, we build on a product-agnostic dryer; what changes is the recipe, the cut format and the pre-treatment. Many of our customers also process product families covered under freeze dried food equipment and freeze-dried agricultural products on the same platform.