FDR Food Freeze Dryer(S/S Shelves)

Integrate machine structure, all sub-systems proper installed, low failure rate.

Precision designed system and well selected parts strong ensure the entire machine reliable working.

Optimized control system guarantee.

Integrated design, compact size, all-in-one body.

Drying chamber and system could horizontal or vertical arrange.

Machine with just right configurations.

Less workers need.

Low maintenance cost.

Low downtime rate.

30% power saving technology.

CONTROL SYSTEM:

• PLC + Touch screen system, PC connectivity.
• Automatic and Manual operation selectable.
• System working status diagram display.
• Freeze Drying status & data display.
• Drying data auto storage, could download to U disk.

DRYING HOUSE & DOOR:

• Design according to GB pressure container directives.
• Cylindrical chamber with insulation.
• Mirror finished walls, shelves, doors and accessories.
• Hinged door, in front door and side drying house have viewing ports.
• Plates and drying house inner wall mirror finish.

SHELVES:

• Stainless steel made, Mirror finish.
• Sandwich type plates fill silicone oil, all plates have both freezing and heating function: -40C ~ +70C.

SHELVES HEATING AND FREEZING SYSTEM

• Shelves sandwich structure inner fill silicone oil, the fluid drive by centrifuge pump and recycle inside.
• Shelves freezing indirect achieved by refrigerant expand through brazed plate heat exchanger.
• Heating by an individual electric heater.
• All pipes adopt sanitary AISI304.

CONDENSER:

• Condenser house in rear side of drying chamber, Share body with drying chamber.
• Stainless steel material for both coils and walls, surface mirror finish.
• Condenser floor slope design for water thoroughly discharge.
• Exclusive designed coils route, high performance vapor collection.

VACUUM SYSTEM:

• Oil sealed vacuum pump(larger model also have roots blower), with vacuum adjust controller.
• Pneumatic isolation valve installed between condenser and pump.

COMPRESSOR SYSTEM:

• Reciprocating compressor, oversized for stable performance.
• Water cooled condenser.
• Brazed plate heat exchanger for shelves cooling, refrigerant direct expand for condenser cooling.

• Shelves cooling from +20C to –30C within 60min.
• Shelves lowest temperature –40C (accuracy 2C).
• Shelves heating from –20C to +20C within 60min.
• Shelves Max temperature +70C (accuracy 1C).
• Ice condenser cooling from 20C to –40C within 30min.
• Ice condenser lowest temperature –55C.
• Vacuum pump from atmosphere to 15Pa within 30min.
• System final vacuum <5Pa, leakage ≤5x10-2mbarL/s.

• Drying house wall roughness Ra<0.5
• 2B finished shelves roughness Ra<0.5
• Shelves flatness <0.5mm/m.
• Condenser wall roughness Ra<0.5
• Condenser coils roughness Ra<0.5