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A global manufacturing supplier specializing in comprehensive solutions for food processing projects
+86 0536 6063 199
+86 159 0802 8606
China Shandong Weifang No. 777, Changzhan Road, High-Tech Zone
The spiral quick freezer (a vertical spiral multi-tier conveying quick-freezing system) uses a vertical spiral multi-tier conveying structure that carries food up a tower-like spiral mesh belt while it freezes. Compared with a flat, straight-line tunnel quick freezer, at the same capacity the machine's footprint is only 1/3 of that of a traditional quick-freezing line, making it ideal for small and mid-sized plant expansion as well as large-scale production ramp-up. The whole unit is built from 304 food-grade stainless steel and, combined with an annular symmetrical air duct and a high-pressure circulating fan, delivers -35°C full-zone constant cold-air circulation and 360° penetrating refrigeration with no dead corners inside the enclosure, driving food rapidly across the hazardous ice crystal formation zone. Shandong TCA Intelligent Technology Co., Ltd. (TCA) has worked in the food machinery industry for many years; with its five advantages — small footprint, low energy consumption, high-quality rapid freezing, fully automatic operation and broad versatility — the spiral blast freezer suits food manufacturers pursuing large-scale, intelligent and energy-efficient production.
Spiral vs Tunnel: The First Question in Quick-Freezer Selection
The two types of equipment are not substitutes for each other — they are split by plant conditions. The spiral type coils the conveying path into a tower, trading height for floor space; the tunnel type stretches the conveying path straight, trading length for height. Which one to choose depends first on which option your plant allows.
| Selection dimension | Spiral quick freezer | Tunnel quick freezer |
|---|---|---|
| Conveying structure | Vertical spiral multi-tier spiral conveying | Straight-line flat conveying |
| Footprint at equal capacity | About 1/3 of a traditional quick-freezing line | Requires a long straight footprint |
| Building conditions | Sufficient clear height, tight floor area | Sufficient floor length, average ceiling height |
| Suitable product forms | Individual items, granules, blocks and other products that can lie flat on a mesh belt | Single items and coated/breaded products that need flat setting |
| Capacity scale | From small/mid-sized plant expansion to large-scale ramp-up | Medium-to-large scale mass production |
| Typical scenario | Restricted plant area, high-density layout needed | Long, narrow plant; products needing straight-line setting |
We manufacture spiral, tunnel and fluidized quick freezers alike; when selecting, simply provide your plant's floor dimensions together with its clear height and we will recommend the most suitable type.
| Stage | What it does | Key point |
|---|---|---|
| ① Vertical spiral multi-tier conveying | Food is continuously conveyed on a tower-like spiral mesh belt | Trades height for floor space; about 1/3 the footprint at equal capacity |
| ② Annular symmetrical air duct refrigeration | High-efficiency finned evaporator + high-pressure circulating fan deliver full-zone constant cold-air circulation inside the enclosure | -35°C full-zone constant temperature, 360° penetrating refrigeration with no dead corners |
| ③ Rapid crossing of the hazardous ice crystal formation zone | Rapid freezing and setting under strong air penetration | Locks in cell structure, avoiding water loss, softening, cracking and clumping after thawing |
The third stage is what determines frozen-product quality: the longer food dwells in the hazardous ice crystal formation zone, the larger the ice crystals and the more severe the damage to the cell structure. The role of the annular symmetrical air duct is to let every tier and every point inside the tower be penetrated by cold air of equal strength — if the duct is not symmetrical, an obvious temperature difference forms between the inner and outer rings of the tower, and products from the same batch end up inconsistent inside and out.
The machine uses an advanced vertical spiral multi-tier conveying structure; at equal capacity, its footprint is only 1/3 of a traditional quick-freezing line, greatly saving plant space and perfectly matching both the expansion needs of small and mid-sized plants and the large-scale ramp-up of larger enterprises, substantially reducing site construction and use costs. For an existing older plant this often matters more than the price of the equipment itself — without enough space, even the best capacity plan cannot be realized.
The machine is built strictly to food-production safety standards, with the whole unit made of 304 food-grade stainless steel; the body, conveying mesh belt and interior of the cavity are free of dead corners, corrosion-resistant and easy to clean, fully in line with HACCP food-production practices and effectively preventing contamination of food, suitable for all food-processing scenarios with high cleanliness requirements. The enclosure uses double-sided stainless steel with a high-density polyurethane insulation layer, giving excellent cold-retention performance and minimizing cold loss, achieving energy savings through its structure.
To meet the intelligent, unmanned-production needs of modern food factories, the machine carries a PLC intelligent control system with a user-friendly touch interface — simple to operate and precise to control. It supports variable-frequency stepless speed regulation: freezing time, conveying speed and enclosure temperature can all be freely adjusted according to food category and capacity needs, with a wide adjustment range and strong adaptability, meeting the quick-freezing process requirements of fruits and vegetables, meat, seafood, prepared dishes, pastries, fried foods and other categories.
The machine achieves fully automatic, continuous infeed, quick-freezing and discharge as an integrated operation, with no need for full-time manual attendance, greatly reducing labor costs.
The spiral structure places higher demands on mesh-belt running stability than straight-line conveying: once the belt deviates, the entire spiral tower must be stopped for adjustment. The machine therefore comes with an automatic tensioning anti-deviation device and an intelligent defrost drainage system, giving strong stability and a low failure rate during operation and effectively preventing mesh-belt deviation, water pooling and frosting inside the enclosure, safeguarding 24-hour continuous, stable production-line operation. Compared with traditional quick-freezing equipment of the same specification, the energy-saving effect is marked — it can help a business save 30%-40% on electricity, effectively cutting production energy costs over the long term.
| Common problem | Root cause | Response |
|---|---|---|
| Mesh-belt deviation | Uneven tension during spiral conveying; deviation accumulates over long runs | Automatic tensioning anti-deviation device continuously corrects mesh-belt tension |
| Water pooling and frosting inside the enclosure | Defrost water drains poorly, collects inside and re-frosts | Intelligent defrost drainage system discharges defrost water in an orderly way |
| Water loss, cracking and clumping after thawing | Dwelling too long in the hazardous ice crystal formation zone produces coarse ice crystals | Annular symmetrical air duct + high-pressure circulation to cross the danger zone quickly |
| High energy consumption | Insufficient enclosure insulation and cold loss; frequent defrosting | Double-sided stainless steel + high-density polyurethane insulation to lock in cold and cut losses |
What these four problems have in common is that they are all structural design issues rather than operating issues: mesh-belt deviation and water pooling are structural risks specific to spiral equipment and cannot be fixed by operating discipline; freezing quality and energy consumption depend on duct symmetry and insulation performance. So the key to specifying a spiral quick freezer is to look at the structural design and air-duct solution, not just the rated temperature.
Buying a single spiral quick freezer and configuring a complete pre-freezing processing line are two different projects. Quick freezing is the final stage of food processing, and the performance of every preceding stage is transmitted into the freezing tower.
| Stage | Function | Interface with the quick-freezing stage |
|---|---|---|
| Cleaning | Removes surface impurities and microorganisms | Excessive surface water increases the frosting load inside the enclosure |
| Pre-treatment | Cutting, blanching, battering and breading, etc. | Cut size and thickness directly determine the required freezing time |
| Sorting | Grades by specification and removes substandard items | Consistency of specification determines freezing uniformity within one tower |
| Quick freezing | Rapid crossing of the hazardous ice crystal formation zone during spiral conveying | The core stage; must match the material state from all preceding stages |
| Packaging and frozen storage | Blocks moisture and oxygen before entering frozen storage | Whether the discharge temperature meets target directly determines shelf life |
The place where a whole line most often goes wrong is the matching between pre-treatment and quick freezing: doubling the cut thickness often more than doubles the required freezing time; and battering/breading leaves a high surface moisture content, noticeably increasing the frosting load in the first section after the product enters the tower. Because a spiral tower has a fixed height, the material's dwell time inside the tower is mainly adjusted through mesh-belt speed, so it is all the more important to give the equipment supplier the single-piece size and weight at the selection stage rather than waiting to tune it during trial runs.
| Dimension | Content |
|---|---|
| Five application areas | Fruits and vegetables, seafood and aquatic products, meat products, prepared dishes and pastries, fried and breaded products |
| Typical materials | French fries, corn kernels, green peas, strawberries, mangoes; fish and shrimp, squid, fish balls, peeled shrimp; chicken nuggets, meat skewers, prepared meat products, fresh meat cuts; dumplings, glutinous rice balls, steamed buns, baking semi-finished products; breaded snacks and fried semi-finished products |
| Finished-product performance | Fruits and vegetables retain fresh taste and vitamins; aquatic products keep their original flavor; meat stays firm with no loss of blood water; prepared dishes and pastry frozen products stay separate and non-sticky with intact appearance; breaded products keep a crisp coating that does not soften |
| Suitable customers | Small and mid-sized plants expanding, large enterprises scaling up, and food manufacturers building a new quick-freezing line |
The machine's versatility is its most practical feature: the same spiral quick freezer can handle individual quick freezing of fruits and vegetables as well as breaded snacks, dumplings and glutinous rice balls; the product category can be switched rapidly with market trends without configuring a separate line for each category.
What is the difference between a spiral quick freezer and a tunnel quick freezer? How do I choose?
The two are not substitutes for each other. A spiral quick freezer uses vertical spiral multi-tier spiral conveying, trading height for floor space, with a footprint of about 1/3 of a traditional quick-freezing line at equal capacity; a tunnel quick freezer uses straight-line flat conveying and suits materials that need flat setting. The decision criterion is your plant conditions: if floor area is tight and clear height is sufficient, choose the spiral type; if the plant is long and narrow with an average ceiling height, choose the tunnel type. Provide your plant's floor dimensions and clear height together and we can give a more suitable plan.
Why does a spiral quick freezer place such emphasis on mesh-belt anti-deviation?
The spiral structure requires the mesh belt to maintain balanced tension throughout the spiral path. Once it deviates, the entire spiral tower must be stopped for adjustment, affecting the stability of 24-hour continuous production. The machine therefore comes with an automatic tensioning anti-deviation device that makes tension correction a routine action rather than something handled only after the deviation becomes obvious.
If a frozen product loses water, cracks or clumps after thawing, is that an equipment problem?
In most cases it is related to dwelling too long in the hazardous ice crystal formation zone — coarse ice crystals puncture the cell structure, so water loss and cracking naturally occur after thawing. The equipment-side answer is an annular symmetrical air duct combined with a high-pressure circulating fan, delivering -35°C full-zone constant temperature and 360° penetrating refrigeration with no dead corners inside the enclosure, so food crosses the danger zone quickly; we also recommend giving the equipment supplier the single-piece size and weight so conveying speed can be matched.
Can the spiral quick freezer be customized?
Yes. We can tailor a suitable quick-freezing solution to the customer's plant dimensions, production capacity and processing category. Because the number of tiers and the diameter of the spiral tower directly determine footprint and capacity, we recommend providing the plant's floor dimensions and available clear height first, then confirming the tower specification.
Is cleaning and maintenance convenient? What does after-sales service include?
The body, conveying mesh belt and interior of the cavity are free of dead corners, corrosion-resistant and easy to clean, fully in line with HACCP food-production practices; combined with the intelligent defrost drainage system, they prevent water pooling and frosting inside the enclosure. All spiral quick freezers are supplied directly by the manufacturer with no middleman markup, and every unit undergoes multiple rounds of commissioning and testing before leaving the factory; we also provide free equipment installation, commissioning, operator training and lifetime maintenance as a complete after-sales package.
Shandong TCA Intelligent Technology Co., Ltd. (TCA) is a source manufacturer focused on the R&D, production, sales and after-sales of complete food-processing equipment, with many years of deep experience in the food-machinery industry and mature production processes, a complete quality-inspection system and a professional technical team. All spiral quick freezers are supplied directly by the manufacturer with no middleman markup, and every unit undergoes multiple rounds of commissioning and testing before shipment to ensure stable performance and compliant quality. The brand also offers one-stop customized service, tailoring a suitable quick-freezing solution to the customer's plant dimensions, production capacity and processing category, and providing free equipment installation, commissioning, operator training and lifetime maintenance as a complete after-sales package. Looking ahead, TCA will continue to invest in technical R&D, iterating and upgrading the performance of its quick-freezing equipment to empower the high-quality development of the food-processing industry.
Related equipment: quick freezer equipment, tunnel quick freezer, fluidized quick freezer, vacuum freeze drying equipment.
Need a spiral quick freezer proposal and quotation? Send us the food category and form you plan to process, the single-piece size and weight, the target capacity, the required discharge core temperature, and your plant's floor dimensions and available clear height; on that basis we will issue the tower specification, capacity plan and quotation, and can arrange a trial run with your material.
Frequently Asked Questions
This machine is designed for processing a wide range of food raw materials. Depending on the specific model, it can handle fresh, chilled, or frozen materials within a defined size and moisture range. For optimal performance, we recommend confirming the raw material specifications before ordering.
The equipment is designed to handle potatoes of varying sizes. For certain processes such as cutting or peeling, adjustable settings or size grading solutions can be provided to ensure consistent output quality.
We provide customized solutions based on your factory layout, processing capacity, and production requirements. Our engineering team can assist with line design and technical planning.
Our solution service typically includes process analysis, equipment configuration, line layout drawings, operation guidance, and technical support. Upon request, we can also assist with installation guidance, commissioning, and operator training through online support.
We provide long-term after-sales support for complete processing lines, including technical consultation, troubleshooting assistance, spare parts supply, and system upgrade advice. Detailed operation manuals and maintenance guidelines are provided to ensure smooth daily operation.
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If you are interested in any of our products or would like to make your customized order, please feel free to contact us. We are looking forward to establish successful business relations with you.
