Suitable for economical and practical freeze dryer or drying equipment for medicine, fruits and vegetables 

 

 

FD-1000 specification

Model	FD-1000
Type	Radiant type with individual quick freezer
Ice Capacity (kg)	1000kg in a 24hr period (vapor condenser capacity)
Vapor Condenser Temperature (℃)	-45℃ (option: -60℃)
Usable Shelf Area (m2)	100.9 m2
Number of Shelves	17+1, the top plate provides radiant heat only
Shelf Dimension (mm)	4950*(600*2)mm (thickness: 15mm) aluminum
Shelf Spacing (mm)	60-80mm
Shelf Temperature (℃)	Room temperature to 110℃(max.)
IQF Cooling Rate (+40℃ to –25℃)	≤ 60 minutes
Shelf Heating Rate (℃/min) (approx.)	1℃/min, By electricity or steam
Heating/cooling medium	Silicone oil or mixing liquid
Heating/cooling exchange	By plate type of heat exchanger
Number of Product Trays	272 pieces
Tray Dimension (mm)	618*600mm (height: 25mm) aluminum
Ultimate vacuum level (Pa)	15 Pa
Chamber vacuum rate (atm to 100 Pa)	≤ 25 minutes
Refrigeration	Brand option: Hanbell, Refcomb, Frascold.
Refrigerant	R404A/R507
Cooling way	By water cooling or air cooling as option
Cooling water flow rate	90-110t/hr, <28℃
Vacuum system	Standard Yihua, Yoivac, Option: Edwards
Energy consumption (24hr)	3.27kWh/kg by water cooling
Power requirement	170.2kw, 110-240V single, 240-480V, 3P, 50/60Hz
Defrost way	By water or 60°C hot water
Control system	PLC with HMI
Installation area (m2)	200 m2
Chamber – over all dimension	10800*2560*3200mm (L*W*H), SUS304
Weight (kg)	18000kg

Technical Characteristics for Construction

The freeze dryer is composed of chamber, shelf, vapor condenser, trays, vacuum system, heating system, refrigeration system, defrost system and control system. The following systems or components are integrity as a whole, ready for running at user’s site.

I. Chamber

The chamber is the place where freeze drying process occurred. The chamber, doors are constructed in SUS304 stainless steel. The chamber contains both the product shelves and the vapor condenser in side. The chamber is fitted with valves of vacuum line connection, drain, water defrost and vacuum release. The cylindrical shaped chamber has two doors - one at each end. The one is for products loading/ unloading; the other is at the condenser end if the vapor condenser is located at the rear part of the chamber. The doors have an opening angle of 110 degree.  The hinges will be either left or right hand side, to be specified by the customer. Closing is by means of four quick acting latches. Each door has viewing port. The frame of viewing ports is made of 304stainless steel and toughened glass window, to allow visual monitoring of both

the vapor condenser and product. 

II. Shelf
The shelf is made of stainless steel SUS304 for cooling and heating transfer and also for support of trays, the top plate providing radiant heat only. The product is placed in trays, which are loaded onto the shelves in the freeze dryer. The shelves can be chilled and heated, so the machine is capable of freezing product in place. The shelves have a flat upper side and cooling/heating fluid channels inside. The shelves will be given 10 bars pressure for one week, where the working pressure is 2 bar.

II. Product trays

The product trays are made of SUS304 stainless steel. Polished inside and outside and the corner is polished to round, no harmful to hands. The designed capacity is 10kg per square meter.

 

 

IV. Vapor condenser
The vapor condenser is located in the rear half of the chamber or lower half, and is constructed from SUS304, 25mm round tube. The vapor condenser is given 20 bars pressure to for one week. Refrigeration of the vapor condenser is by direct expansion. Defrosting the accumulated ice from the vapor condenser is by water, and hot water is recommended to speed up the

V. Vacuum system
The vacuum system is composed of chamber, vacuum pipes, valves and vauum pump. It requires no leaks; Vacuum system is an essential for the rapid sublimation. It requires get 100Pa within 30 minutes. Heating will affect vacuum level during sublimation; heating speed will be controlledaccording to vacuum level.

VI. Heating system

The shelves are cooled and heated with transfer fluid. This fluid can be chilled or heated to provide in-place freezing or heating of the product during the drying cycle. An electric heater directly heats the fluid, and chilling is through an intermediate heat exchanger. A centrifugal pump provides the forced circulation of the heat transfer fluid. Optional fluid: silicon oil, ethanol, glycol, deicing fluid, alcohol, water etc. The best choice is silicone oil.

VII. Refrigeration system
The refrigeration system cools the heat plates during in-place freezing, evacuation and the early stages of drying. It also cools the vapor condenser during the drying cycle. Single stage/double stage automatic switching semi-hermetic piston refrigeration compressor is adopted on our small and middle freeze dryers to save energy cost. Single stage is working when the temperature is high at the beginning of a batch production; and a double stage is working when the temperature comes down. Patent No.: ZL200920164241.X. An environment friendly low temperature refrigerant R404A/R507 is used. Water cooling condenser with water cooling tower or air cooling condenser is optional according to the local climate. Oil separator, oil cooler and suction accumulator, solenoid valves, expansion valves are support to compressor. All pressure vessels have boiler certificates, and supplied after strict pressure test.

 

 

 

Freeze dried products