The direct cooling block ice machine is composed of an evaporator, a condenser and a compressor, and the compressor is one of the components of the refrigeration system.

The working process of block ice machine:

1. Put the raw material (water) into the evaporator and heat it to above 100°C, then reduce the pressure and temperature through the throttle valve, and then enter the condenser to cool down to below 0°C.

2. When the temperature of the condenser drops below 0°C, ice cubes will be made; at this time, ice cubes of different specifications can be obtained by controlling the speed of the compressor.

3. When the number of ice cubes produced reaches a certain amount, the power switch of the compressor can be turned off to stop working; at the same time, the cover of the ice storage tank can be opened to allow the ice cubes to automatically flow into the ice storage tank for frozen storage.

Features of block ice machine:

1. The structure is simple, compact and occupies a small area;

2. Small size and light weight;

3. Low noise;

4. Easy to operate;

5. Reliable operation;

6. Long service life;

7. Low energy consumption;

8. Easy maintenance;

9. Low price.

Working principle of direct cooling block ice machine:

The direct cooling block ice machine adopts the principle of air cooling to make small pieces of ice. Its working principle is as follows: cold water passes through the filter device to filter out impurities and then enters the evaporator to absorb heat and evaporate into steam. The steam flows to the condensate under the action of pressure. condenses into a liquid (or gas). Due to the large specific heat capacity of water (4.2J/(kg.K), the condensed liquid has a large latent heat of vaporization (393kcal/g), which can absorb a large amount of heat and vaporize to form bubbles and rapidly expand into a large number of tiny liquids Drop-shaped solid particles - crystals or crystals. These crystals absorb a layer of water film on their surface and become wet, so as to maintain the original shape.

As the pressure increases and the temperature drops to close to 0 degrees, (such as when the ambient temperature is 0 degrees) liquid water will solidify into solid crystals or crystals and precipitate water to form large pieces of ice. Because the energy carried by the crystals or the crystals themselves is enough to overcome their own gravity, they are separated from the mother liquid surface and float on the water surface to form floating ball iceberg-like objects. (For example, when the ambient temperature is higher than 0 degrees), the liquid water will boil and become gaseous water vapor, escape and liquefy into liquid particles in the form of mist or water droplets—solution or emulsion.