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Dry ice making machines are ice maker machines that convert liquid carbon dioxide (LCO2) into solid carbon dioxide (dry ice). These dry ice production machines are classified based on dry ice shape, production capacity, level of automation, and equipment structure, as follows:

Dry ice maker machine is an industrial or commercial ice maker equipment designed to convert liquid carbon dioxide (LCO2) into solid carbon dioxide (dry ice). Carbon dioxide (CO2) exists in three physical states—gas, liquid, and solid—depending on temperature and pressure, dry ice is the solid form of carbon dioxide. The dry ice making machine does not itself produce carbon dioxide; rather, it is a device that alters the physical state of carbon dioxide and compresses solid carbon dioxide into various shapes.

Dry ice is solid carbon dioxide (CO2), not ordinary ice (ice formed from frozen water H2O). It is a white solid obtained by rapidly depressurizing liquid carbon dioxide. Its temperature at normal pressure is extremely low, at -78.5℃. Although it looks like ice, it does not melt into a liquid but sublimates directly into a gas, hence we call it "dry ice".

A liquid nitrogen dosing machine (also known as a liquid nitrogen injector) is an automated device designed to inject a precisely measured amount of liquid nitrogen into packaging containers—such as aluminum cans or PET bottles—after filling but before sealing. Its core operating principle relies on the rapid vaporization of liquid nitrogen within the container (where it expands to approximately 700 times its liquid volume) to achieve specific packaging and preservation effects.

A dry ice cleaning machine, also known as a dry ice blasting machine, is a professional cleaning equipment that uses compressed air to spray dry ice particles onto the surface of the cleaning object to achieve highly efficient cleaning purpose. Dry ice blasting cleaning does not use any chemical agents, will not damage the surface of the cleaning object, and leaves no additional residue. Dry ice cleaning is an ideal cleaning method.

The core principle of liquid nitrogen dosing machine is based on the physical property of cryogenic liquid nitrogen (-196°C) rapidly vaporizing and expanding at room temperature.  The liquid nitrogen dosing system drips a precise dose of liquid nitrogen into the packaging container, where the liquid nitrogen rapidly vaporizes and expands approximately 700 times, instantly expelling air from the bottle and achieving oxygen removal for preservation and pressurization to prevent collapse. It is commonly used to increase the hardness of PET bottled mineral water and edible oil, and preserve beverages and food.

The MINI Dry Ice Cleaner machine is a newly developed portable dry ice cleaning machine with a compact design and a weight of only 9 kg, it can be used conveniently and move flexibly in factory workshops, laboratories, or residential rooms.

In the automatic dry ice production by dry ice makers, the raw material supply is very important. The control valve for opening and closing liquid carbon dioxide supply is CO2 solenoid valve. Its working pressure is below 45 bar. Therefore, fully automatic dry ice production machine can only be connected to carbon dioxide storage tank or Dewar flask bottle with pressures below 23 bar. Connecting automatic dry ice maker to CO2 cylinder with pressures up to 100 bar will damage the CO2 solenoid valve.

Dry ice is widely used in food preservation, industrial cleaning, medical transportation and stage effects. However, dry ice production emits large amounts of carbon dioxide gas. The carbon dioxide recovery unit equipment can efficiently recover these carbon dioxide gas from dry ice making machine, significantly improving dry ice production efficiency and achieving resource recycling.

Dry ice cleaning machines, also known as dry ice blasting machines, is a highly efficient and environmentally friendly cleaning machine. They use high-pressure compressed air to accelerate dry ice particles and then spray them to clean objects. The high-speed -78°C dry ice pellets freezes dirt and breaks its adhesion, then instantly sublimate and expand, generating a powerful peeling force to remove dirt quickly and achieve efficient cleaning results. Dry ice cleaning is a physical cleaning method that is 100% chemical-free and requires no secondary treatment.

Common problems and solutions for dry ice making machines are as follows:

Pneumatic dry ice cleaning machine only uses compressed air as a power source and does not require electricity. It is composed of dry ice hopper, dry ice conveyor, air supply system, pneumatic control system, and injection system. It has three obvious advantages: safety, flexibility, and environmental protection. With a fully pneumatic design, the dry ice machine has no risk of electric sparks and can operate safely in flammable and explosive environments such as petrochemicals and dust workshops. It can also directly clean circuit boards, battery compartments, motors, and electric parts; without relying on power, it can also operate in field environment without electricity.