How Industrial Tube Ice Machines Work: A Technical Overview

How Industrial Tube Ice Machines Work: A Technical Overview

Understanding how a tube ice machine operates helps buyers make better purchasing decisions and operators maintain their equipment more effectively. This article provides a clear technical overview of the tube ice making process.

The Refrigeration Cycle

At the heart of every ice machine is a vapor-compression refrigeration cycle with four main components:

1. Compressor: Compresses low-pressure refrigerant gas into high-pressure, high-temperature gas. DAXTRO uses Bitzer/RefComp semi-hermetic piston compressors for reliability.
2. Condenser: Cools the high-pressure gas into liquid refrigerant. Available as air-cooled (with fans) or water-cooled (with cooling tower).
3. Expansion Valve: Reduces pressure of liquid refrigerant, causing rapid cooling as it enters the evaporator.
4. Evaporator (Tube Ice Generator): The refrigerant absorbs heat from water inside the tube ice generator, freezing water into ice.

The Ice Making Process — Step by Step

Step 1: Water Circulation
Water is pumped from the bottom water tank to the top distributor, flowing down through stainless steel tubes in the tube ice generator.

Step 2: Freezing Cycle
Cold refrigerant flows around the outside of the tubes, freezing water from the inside out. The water that doesn't freeze recirculates. This takes 15-20 minutes depending on ice thickness settings.

Step 3: Ice Harvesting
When ice reaches the desired thickness, the system switches to harvest mode. Hot gas from the compressor is diverted to the evaporator, warming the tube walls just enough to release the ice columns.

Step 4: Ice Cutting
As ice columns slide down, a rotating cutter at the bottom cuts them into uniform lengths (typically 25-50mm). DAXTRO allows you to adjust cutting length for different applications.

Step 5: Ice Discharge
Cut tube ice falls into the ice storage bin or is conveyed to the cold room. The cycle repeats automatically.

DAXTRO's 9 Technical Improvements

The new-generation DAXTRO tube ice machines feature 9 key upgrades: sandblasting rust removal, integrated machine design, polyurethane foam insulation, circular water tank, gas-liquid separator, exhaust water separator, electronic pressure sensors with APP monitoring, Schneider electric components, and upgraded touchscreen control. Each improvement enhances reliability, efficiency, and ease of operation.