Plate Freezer

Q: What products are suitable for plate freezing?

Plate freezers are suitable for relatively flat products and packaged items such as fish fillets, meat blocks, hamburger patties, chicken portions, vegetables, bakery products, and prepared foods. Recommended thickness is 30–150mm for optimal plate contact.

Q: How does plate freezing compare to blast freezing?

Plate freezing is 3–5 times faster than blast freezing due to direct contact heat transfer. It reduces dehydration, improves product quality, and lowers energy consumption by 30–40%, while blast freezers are better suited for irregular product shapes.

Q: What is the typical freezing time?

Most products reach -18°C core temperature within 2–4 hours depending on product thickness, initial temperature, and fat content. Lean fish typically requires 2–3 hours, while meat blocks require 3–4 hours.

Q: What maintenance is required?

Recommended maintenance includes daily cleaning of plates and refrigerant checks, weekly seal and electrical inspections, monthly sensor calibration and lubrication, and annual professional inspection of the refrigeration system.

Q: What is the energy consumption?

Energy consumption varies by model and product type. Standard plate freezers typically consume 0.15–0.25 kWh per kilogram of frozen product.

Q: Can we process unpackaged products?

Direct contact freezing performs best with packaged products to minimize moisture loss and contamination. Food-grade liners or vacuum packaging are recommended for unpackaged products.

Q: What refrigeration system options are available?

Standard models use R404A or R507 refrigerants. Eco-friendly options including R290 (propane) or CO2 (transcritical) systems are also available.

Q: Do you provide installation and commissioning?

Yes. Installation, electrical connection, refrigeration line installation, commissioning, and operator training services are available.

Product Introduction:

High-efficiency plate freezers for rapid freezing of fish, meat, poultry, and prepared foods. Contact freezing technology achieves core temperature of -18°C in 2–4 hours. Capacity: 500kg–5000kg per batch. Energy-efficient design for commercial food processing.

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PRODUCT DETAILS

The Plate Freezer is a commercial-grade contact freezing system designed for rapid freezing of food products in commercial food processing, seafood processing, meat processing, and prepared food industries. Using direct contact between product and refrigerated metal plates, this system achieves extremely fast heat transfer, reducing product temperature from +4°C to -18°C core temperature in 2–4 hours.

Core Technology:

· Direct Contact Freezing: Product placed between refrigerated metal plates

· High Heat Transfer Efficiency: 3–5x faster than air blast freezing

· Uniform Freezing: Consistent temperature throughout the product

· Minimal Product Dehydration: Sealed contact prevents moisture loss

· High Capacity: Batch sizes from 500kg to 5000kg

Product Quality Benefits:

· Preserves cellular structure and nutritional value

· Minimal drip loss upon thawing

· Maintains original shape and appearance

· Extended shelf life with quality retention

Key Highlights

Highlight	Description
Fast Freezing	Core temp -18°C in 2–4 hours — 3–5x faster than conventional methods
Energy Efficient	Direct contact technology reduces energy consumption by 30–40%
High Product Quality	Preserves texture, color, nutrition, and cellular structure
Low Dehydration	Minimal moisture loss (<1%) compared to air freezing
Batch & Continuous	Available in batch loader and semi-continuous configurations
PLC Control	Automatic operation with temperature monitoring and alarm systems
Food Grade Materials	All food contact surfaces in SUS304 stainless steel
Custom Capacities	500kg – 5000kg per batch; custom sizes available

Technical Specifications

Parameter	Specification
Freezing Capacity	500kg – 5000kg per batch (custom available)
Plate Temperature	-35°C to -40°C
Initial Product Temp	+4°C to +20°C
Final Core Temp	-18°C or below
Freezing Time	2–4 hours (product dependent)
Evaporating Temp	-33°C to -38°C
Condensing Temp	+35°C to +40°C
Refrigerant	R404A, R507, or eco-friendly alternatives
Power Supply	380V / 3-phase / 50Hz
Total Power	15KW – 80KW (by capacity)
Body Material	SUS304 stainless steel
Insulation	Polyurethane foam (100–150mm)
Operating Pressure	0.6 – 1.0 MPa
Control System	PLC touch screen, automatic operation
Safety Features	Overload protection, emergency stop, alarm system
Dimensions	Varies by capacity; standard models 2m–4m length
Weight	1500kg – 6000kg (by model)

Model Specifications

Standard Batch Plate Freezers

Model	Capacity (kg/batch)	Plate Area (m²)	Power (KW)	Dimensions (L×W×H m)	Freezing Time
PF-B01	500	8	15	2.0×1.5×1.8	2–3h
PF-B02	1000	16	25	2.5×1.8×2.0	2–3h
PF-B03	2000	32	40	3.0×2.2×2.2	2.5–4h
PF-B04	3000	48	55	3.5×2.5×2.5	3–4h
PF-B05	5000	80	80	4.0×3.0×2.8	3–4.5h

Semi-Continuous Plate Freezers

Model	Capacity (kg/h)	Plate Area (m²)	Power (KW)	Dimensions (L×W×H m)	Application
PF-C01	300	20	30	3.0×2.0×2.5	Small processing
PF-C02	500	32	45	3.5×2.2×2.8	Medium processing
PF-C03	1000	64	75	4.5×3.0×3.0	Large scale

Specialty Plate Freezers

Model	Application	Capacity	Special Features
PF-S01	Fish fillets	500–2000kg	Thin plate spacing, rapid freeze
PF-S02	Whole fish	1000–3000kg	Wide plate gap, large products
PF-S03	Meat blocks	2000–5000kg	High pressure, deep freezing
PF-S04	Prepared foods	500–1500kg	Multiple plate positions

Application Scenarios

Industry	Application
Seafood Processing	Fish fillets, shrimp, prawns, squid, crab — IQF quality freezing
Meat Processing	Frozen meat blocks, hamburgers, meatballs, prepared meat products
Poultry Processing	Whole chickens, chicken parts, duck, prepared poultry dishes
Dairy Processing	Frozen cheese blocks, butter blocks
Fruit & Vegetable	Flash-frozen berries, corn, peas, green beans
Bakery & Confectionery	Frozen dough, pastries, desserts
Ready Meals	Pre-packaged frozen meals, dumplings, buns
Marine & Fisheries	Coastal and onboard fish processing vessels

Product Handling Guide

Pre-Freezing Preparation:

1. Product temperature: +4°C or below recommended

2. Product thickness: 30mm – 150mm (standard plates)

3. Packaging: Vacuum packaging or moisture-proof packaging recommended

4. Spacing: Ensure product makes full contact with plates

Loading Procedure:

1. Open plate freezer and clean surfaces

2. Place product on bottom plates

3. Lower top plates to contact product

4. Close and secure the unit

5. Start freezing cycle on PLC control

Unloading Procedure:

1. Verify core temperature reached -18°C

2. Release plate pressure

3. Open freezer

4. Remove frozen products

5. Clean plates and reload

FAQ

1. What products are suitable for plate freezing?

Plate freezers are ideal for flat products and packaged items: fish fillets, meat blocks, hamburger patties, chicken portions, vegetables, bakery products, and prepared foods. Products should be relatively flat (30–150mm thickness) for optimal contact.

2. How does plate freezing compare to blast freezing?

Plate freezing is 3–5x faster than blast freezing due to direct contact heat transfer. It results in less dehydration, better product quality, and 30–40% energy savings. However, blast freezers handle irregular shapes better.

3. What is the typical freezing time?

Most products reach -18°C core temperature in 2–4 hours. Actual time depends on product thickness, initial temperature, and fat content. Lean fish: 2–3 hours; meat blocks: 3–4 hours.

4. What maintenance is required?

· Daily: Clean plates, check refrigerant levels

· Weekly: Inspect seals, check electrical connections

· Monthly: Calibrate temperature sensors, lubricate moving parts

· Annual: Professional service inspection, refrigerant system check

5. What is the energy consumption?

Energy consumption varies by model and product. Standard models consume 0.15–0.25 kWh per kg of product frozen, significantly lower than conventional air blast freezers.

6. Can we process unpackaged products?

Direct contact freezing works best with packaged products to prevent moisture loss and contamination. For unpackaged products, we recommend food-grade liners or vacuum packaging.

7. What refrigeration system options are available?

Standard models use R404A or R507 refrigerants. Eco-friendly options with R290 (propane) or CO2 (transcritical) are available for facilities requiring low-GWP refrigerants.

8. Do you provide installation and commissioning?

Yes, we offer full installation, electrical connection, refrigeration line installation, commissioning, and operator training. Refrigeration technician coordination is available.

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Product Introduction:

PRODUCT DETAILS

Key Highlights

Technical Specifications

Model Specifications

Standard Batch Plate Freezers

Semi-Continuous Plate Freezers

Specialty Plate Freezers

Application Scenarios

Product Handling Guide

FAQ

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