Double Spiral Freezer Technology & Selection Guide
A double spiral freezer moves food through two connected spiral conveyor sections for continuous freezing. Explore how product characteristics, required throughput and plant layout influence system selection.
PROCESS OVERVIEW
How a Double Spiral Freezer Works
Two connected spiral sections guide products through the freezer, creating a continuous conveying route that can be adapted to production-line requirements.
1
Load at Line Level
Feed product from the production floor onto the infeed conveyor and confirm the loading pattern.
2
Travel Through the First Spiral
Product climbs through the first spiral section while the belt provides the required dwell time.
3
Continue Through
the Second Spiral
The twin-drum route continues through the second spiral section, further reducing product temperature.
4
Discharge to the Next Process
Return product to the downstream conveyor at the agreed outlet condition.
What determines freezing performance?
Residence Time: Belt path length and conveyor speed. Heat Removal: Airflow, refrigeration capacity, and product thermal load.
CONFIGURATION COMPARISON
Single vs. Double Spiral Freezer
Both configurations support continuous freezing. Compare conveyor elevations, required freezing time, throughput and available space to determine which arrangement best fits your production line.
Double Spiral Freezer
Single Spiral Freezer
VS
Conveyor layout
One drum with a single spiral conveyor path
Two drums with connected spiral conveyor sections
Infeed & Outfeed
Entry and exit elevations depend on the layout
Can accommodate low-level infeed and outfeed
Space Requirements
One drum plus transfer and service space
Two drums plus connecting and service space
Freezing Time
Required residence time is provided within one
spiral section
Two connected sections offer additional routing options for longer residence times
APPLICATION FIT
Double Spiral Freezer Applications
From reinforced conveyor systems to integrated processing lines, Square delivers freezing solutions tailored to different food production needs.
Poultry & Coated Products
Square configures reinforced belt supports, tier clearance and frost-management options for continuous double-spiral poultry freezing.
View Poultry Freezing Project
Seafood
Square engineers double low-tension spiral systems with site-specific layouts and optional remote monitoring for seafood production.
View Seafood Project
Bakery & Dough
Square can combine double-drum belt and dwell-time options with its experience integrating bakery proofing and freezing lines.
Explore Bakery Freezing
Dumplings & Dim Sum
Square offers double-drum belt and transfer options, drawing on its integrated spiral cooling and dumpling freezing experience.
Explore Dumpling Freezing
Ready Meals
Square tailors double-drum infeed and outfeed layouts for prepared foods, as demonstrated in our Chata Foods project.
View Prepared Foods Project
Ice Cream & Frozen Desserts
Square offers double-drum configurations with adjustable belt speed and PLC freezing programs for suitable ice cream production lines.
Explore Ice Cream Freezing
SITE & LAYOUT PLANNING
Planning Space for Your Freezer
Square tailors double-drum arrangements, conveyor elevations, maintenance
access and utility connections to your plant layout.
What Square Needs for an Initial Review
Plant floor plan and ceiling height
Available installation space
Infeed and outfeed positions and
elevations
Product dimensions and target
throughput
Refrigeration and electrical details
if available
Discuss Your Layout
LINE CONNECTIONS
Equipment Integration for Double Spiral Freezing
Whether building a new line or upgrading an existing one, Square integrates double spiral freezing with upstream processing, downstream handling and refrigeration systems.
Upstream Process Options
Square offers cooking, frying and cooling equipment to prepare products for the required freezing conditions.
DOUBLE SPIRAL FREEZER
Square configures double-drum conveying, belt speed and airflow to meet your production capacity and target outlet temperature.
Downstream Process Options
Square plans discharge connections for inspection, weighing, packaging and cold storage according to your requirements.
Inspection
Visual check and product
quality control.
Weighing
Check weight and remove
out-of-spec products.
Packaging
Transfer to primary or
secondary packaging.
Cold Storage
Store frozen products
before distribution.
See an Integrated Production Line
HYGIENE AND MAINTENANCE
Cleaning and Frost Management
Consider what happens between runs, from cleaning and frost removal to inspection and production restart.
Hygienic Design & CIP
Open structure, accessible surfaces and CIP coverage for efficient cleaning.
Learn about CIP for Spiral Freezers
Frost Control
Manage frost buildup with suitable defrost methods and operating settings.
Hot-Gas vs. Electric Defrost
Operation Planning
Coordinate cleaning, defrost and production to minimize downtime.
Review the Maintenance Checklist
CASE STUDY
Double Spiral Freezing in Poultry Processing
See how Square addressed product load, belt support and refrigeration requirements in a double spiral freezer project in Colombia.
Product
Chicken parts
Capacity
3,000 kg/h
Inlet / Outlet
From +12°C to -18°C
Key Features
- Double spiral freezer
- MYCOM refrigeration system
- Belt and support design for poultry products
PROJECT COSTS
Understanding Total Freezer Project Costs
A freezer quotation is only part of the investment. Review equipment, installation and operating
costs before comparing proposals.
1
Equipment Scope
Freezer configuration, refrigeration, controls and optional
systems.
2
Installation Scope
Site preparation, utilities, connections and commissioning responsibilities.
3
Operating Costs
Energy, cleaning, maintenance, consumables and planned downtime.
Explore Spiral Freezer Cost Factors
FURTHER READING
Engineering Insights & Selection Guides
Compare belt options and alternative freezing systems to make a more informed equipment decision.
View all guides
Spiral vs. Tunnel IQF Freezers
Compare spiral and straight-belt systems based on product handling, floor space and production requirements.
Compare Freezer Types
Spiral Freezer Belt Selection
Understand how belt materials and openings affect product support, airflow and cleaning requirements.
​
Explore Belt Options
Mechanical vs. Cryogenic Freezing
Explore how freezing methods differ in refrigeration requirements, operating costs and suitability for continuous production.
Compare Freezing Methods
Work with Square to Plan Your Freezing System
Explore freezer options or share your product, capacity and site requirements. Square will help develop a solution tailored to your production line.
