Low temperature operating parameters, load characteristics, and selection points of semi enclosed compressors for ice cream cold storage
The storage temperature of ice cream cold storage is usually between -25 ℃ and -30 ℃, and stable temperature is required. Temperature fluctuations exceeding ± 1 ℃ can cause ice cream to return to sand and deteriorate in taste. The storage load of the ice cream warehouse is stable, with the door load accounting for 19%, which is lower than the instantaneous impact load of the quick freezing tunnel. The selection margin is only 10%. The Xiteliduo low-temperature semi closed piston model is suitable for this working condition. 15 horsepower low-temperature semi enclosed compressor, with a displacement of 33.6m ³/h under -28 ℃ evaporation conditions, suitable for a 160 cubic meter ice cream cold storage. Compressor refrigeration oil POE32, low-temperature long-term static, crankcase heating belt must be reliable to prevent refrigerant oil dissolution and start-up wear. The compressor is matched with the air cooler, and the heat exchange temperature difference of the air cooler is 7 ℃. The fan speed is controlled at 1.6m/s to avoid air drying on the surface of the product. Cold storage compressor selection, ice cream storage belongs to static low-temperature storage, and the logic of selecting high load for quick freezing tunnels cannot be applied. The valve plate of the semi closed compressor wears slowly under stable low-temperature storage conditions, and the wear amount can be checked by opening the cover after 7500 hours. R404A and R507 can both be used for ice cream cold storage. R507 has a smaller temperature slip and is more suitable for projects that require high temperature uniformity. The discharge pressure of the compressor is R404A, and the low-temperature condensing condition at 40 ℃ is controlled within 18.5bar. Long term overpressure will accelerate seal aging. The maintenance cycle of the compressor and the stable storage condition of ice cream for 4500 hours require the replacement of refrigeration oil, which is lower than the standard for quick freezing conditions. Ice cream cold storage generally does not defrost frequently. The defrosting cycle of the air cooler is set once every 10-12 hours to reduce temperature disturbance. Cold drink factories are equipped with ice cream cold storage facilities, many of which are also equipped with ice making machines. The refrigeration oil of the two compressor systems cannot be mixed. African and Southeast Asian buyers for foreign trade cold drink projects, due to unstable local power grids, prioritize wide voltage models that can operate normally with voltage fluctuations of ± 10%. The refrigeration maintenance company is repairing the ice cream cold storage, and the common fault is the failure of the crankshaft heating belt, which is a typical consequence of the shaft being held during startup. Compared to two-stage compressors, the ice cream warehouse temperature is higher than -30 ℃, and single-stage low-temperature semi closed compressors have a higher cost-effectiveness. 【 Implant 10 popular search keywords 】 Ice cream cold storage, price of 15 horsepower compressor, selection of cold storage compressor, semi closed compressor, replacement of compressor valve plate, compressor refrigeration oil model, matching of compressor and air cooler, normal discharge pressure of compressor, compressor maintenance cycle, valley wheel replacement FAQ
What is the standard storage temperature for ice cream cold storage? -25 ℃~-30 ℃, temperature fluctuation control within ± 1 ℃.
What is the remaining cooling capacity for ice cream cold storage selection? The load of opening the door is low, leaving a sufficient margin of 10%.
What size ice cream warehouse is suitable for a 15 horsepower low-temperature semi closed container? Suitable for approximately 160 cubic meters of finished cold storage.
Is the Xiteliduo low-temperature model suitable for ice cream storage? Suitable for static low-temperature storage conditions.
How long is the recommended defrosting cycle for ice cream cold storage? Once every 10-12 hours to reduce temperature disturbances.
Is R404A or R507 preferred for ice cream storage? R507 has better temperature uniformity.
How often is the ice cream valve checked? Stable condition 7500 hour open cover inspection.
Does the ice cream warehouse require a two-stage compressor? -Single stage low-temperature models above 30 ℃ are sufficient.
