Cryogenic Refrigeration System -150℃～-20℃
Overview:
Microcomputer control, cascade temperature controller, digital temperature display, the regulation of unit 0.1℃, inside the temperature range -20 ℃ ~ -125 ℃ adjustable,operation of cryogenic refrigeration system.
Multi-safety protection, more reliable operation.
France TECUMSEH compressor, Germany DANFOSS compressor, EMERSON compressor, automatic cascade refrigeration technology.
With self-diagnosis function, freezer overload protection, high-pressure switches, overload relays, thermal protection device and other security functions, and fully guarantee the use of safety.
Three sealed mold layer of insulation, Extra-thick high-density polyurethane foam insulation layer, the effect of good insulation; Inline vacuum insulation panels.
Human design, more convenient and flexible.
Suitable for mechanical producing plant use.
Model GY-A228N GY-A250N GY-A2A10N GY-A350N GY-A3A10N GY-A550N GY-A5A10N
Volume 280L 500L 1000L 500L 1000L 500L 1000L
Inner dimension 800*600*600 1200*650*650 1550*800*750 1200*650*650 1550*800*750 1200*650*650 1550*800*750
Type （Vertical）
Capability carrying 150KG 220KG 300KG 220KG 300KG 220KG 300KG
Designed bearing capacity is two times of the standard one, (refrigeration system is designed according to the standard
capacity when target artifact weight is greater than the standard capacity, the cooling rate will decrease)
Temp. range -120℃～20℃ -120℃～20℃ -120℃～20℃ -135℃～0℃ -135℃～0℃ -150℃～0℃ -150℃～0℃
Cooling capacity 0.7kw -110℃ 1 kw -110℃ 2 kw -110℃ 1kw -125℃ 2 kw -125℃ 1 kw -140℃ 2kw -140℃
Temp. accuracy ±2℃ ±2℃ ±2℃ ±2℃ ±2℃ ±2℃ ±2℃
Heating power 2kw 3kw 5kw 3kw 5kw 3kw 5kw
Nickel-chromium alloy electric heating heater, the controller has double safety protection, with independent temperature
limiter protection.
Cooling rate Ambient temperature of 25℃, no-load,（from 0℃to -110℃ about 1 .5 hour；
from 0℃ to -140℃ about 2 hours, cooling rate will be a little different for ambient temperature changes.
Controller ASET multifunctional controller
Operation panel 7-inch color touch screen, display set temperature, measured temperature.
Temp. record Temperature curve and fault record, U-disk data export, excel format.
Inside circulating air 2100 m³/h 2750 m³/h 4500 m³/h 2750 m³/h 4500 m³/h 2750 m³/h 4500 m³/h
When it is open, the internal circulation fan automatically turns off. The touch screen displays open state.
Compressor Emerson Copeland, adopt cascade refrigeration technology
Intermediate heat
exchanger KAORI Plate heat exchanger
Dry filter Emerson
Expansion valve Electronic expansion valve
Evaporator Copper-tube with aluminum-fin
Cooling Type Air-cooled with water-cooled auxiliary functions (Ensure good cooling capacity when temp. above 30℃)
Means of insulation Polyurethane foam insulation, thermal insulation layer 150 mm, with embedded FIR boards
Safety Protection Self-diagnosis function; Phase sequence phase failure protection; leakage protector; cooling unit overload protection;
high and low-pressure switch, overload relay, thermal protection, high-temperature protection and temperature
fault protection.
Case material Outside is cold rolled steel painting, internal is SUS304 wire drawing board.
Refrigerant Mix Refrigerant from LNEYA
Dimension 2200*1150
*1150 2700*1200
*1200 3100*1300
*1250 2900*1200
*1200 3200*1300
*1250 3000*1200
*1200 3300*1300
*1250
Power 380V 50HZ 12KW MAX 16.5KW MAX 20KW MAX 18KW MAX 25KW MAX 23KW MAX 30KW MAX
Weight 570kg 680kg 850kg 750kg 900kg 800kg 980kg
Optional High temperature reaches 80℃ and temperature accuracy is ±0.5℃；the input power will be changed.
Optional Temp. accuracy ±0.5℃
Optional Cooling and heating program controlled, meet cold treatment process requirements(can set 5 programs, each
program can edit 45 steps.)
Optional Interior door, reduce cooling capacity lost when picking small workpieces (temperature below 60℃ optional)
Optional Outside SUS304 wire drawing board case
Optional Diameter 50mm cable hole
Optional Electric heating vacuum glass observation window (with lighting) 200mm*300mm
Optional Low temperature automatic defrost (can be once per hour or use manual button to defrost), ensure it can work at
low temperature for a long time even the door is open and close frequently）
If the low temperature refrigeration system has been frosted, believing that some enterprises have met, then how should we deal with such situation? Are there any methods can solve this problem. Today, let's know something about it with Guanya refrigeration company.
1. First turn off the suction valve of the low temperature box compressor and unload to the minimum number of cylinders to operate.
2. Then close the liquid supply valve of the intermediate cooler and close the suction valve of the small high pressure cylinder.
3. After the high pressure cylinder is returned to normal, open the suction valve of the large and low pressure cylinder again. When the normal operation has been resumed, then supply the liquid to the intermediate cooler.
4. If the frosting of high pressure cylinder is severe, the operation of the unit must be stopped.
5. Drain the intermediate cooler.
6. The cooling water treatment is the same as the single-stage treatment.
Do you remember the above way of processing? If you still have some questions, please contact the customer service on the official website of Guanya refrigeration company immediately, and solve the problem in time!
Contact Lneya for more.
