One does not really require any particular reason to enjoy ice cream. The sweet, creamy dessert in itself is reason enough. The fact that July is celebrated as world ice cream month is, let’s say, just an additional topping to celebrate and indulge in this delightful, creamy, irresistible treat. So, while you think about getting yourself a scoop of your favourite flavour, did you know that compressed air is an essential part of ice cream manufacturing?

Compressed Air in the Food & Beverage Industry

Compressed air plays a crucial role in the Food and Beverage industry, such as ice cream manufacturing. It is used in almost every step of the production and handling process, from preparing ingredients to preparing the final product, operating machinery, and packaging. It is not just that compressed air is an essential utility for such industries; the quality of compressed air is also critical. This is especially the case where compressed air comes in contact with the food product. As a consumable, the final product should be completely contaminant free. Ensure optimal air quality with Class 0 certified compressed air - free from oil or microbiological contaminants, achieved through the use of advanced Oil-free air compressors. Food and Beverage companies achieve this by using air compressors that are ISO 8573-1 and ISO 8573-7 certified for the purity of the compressed air they generate. Compressed air is also utilized to aerate the ice cream mix, creating the beloved creamy texture that we all love. Without the assistance of air compressors, achieving that perfect consistency would be much more challenging. Next time you savor a scoop of ice cream, take a moment to appreciate the role of compressed air and air compressors in making it a truly delightful experience.

Hidden Hero of Ice Cream Manufacturing – Compressed Air

Compressed air is essential for ice cream manufacturing as it plays a key role in various stages of the manufacturing process. Industrial preparation of ice cream requires both – oil-free and oil-lubricated air compressors, depending upon the use of the compressed air. Efficient production relies on the precise utilization of compressed air. Here are a few ways in which compressed air is used for manufacturing ice cream:

Mixing and Blending: Contaminant-free compressed air is used to mix and blend ingredients in the ice cream production process. For the highest quality ice cream production, ensure the compressed air introduced into the mixing chamber, along with all other ingredients that go into making the ice cream, is free of microbiological contamination and oil by using Oil-free air compressors. Compressed air is incorporated into the ice cream mixture to achieve the required consistency for the final product to be smooth and creamy. A consistent air flow is also critical for the movement of the mix within the piping systems of the factory during the manufacturing process.

Freezing: Air compressors are utilised in the freezing process of ice cream. Most ice cream machines use a method called "continuous freezing" or "continuous hardening." Compressed air maintains the temperature in the freezing chamber, allowing the ice cream mixture to freeze quickly while constantly stirring and incorporating air. During this stage, contaminant-free compressed air is carefully added to the ice cream to control its consistency. When the desired thickness is achieved, but before the ice cream is fully hardened, it is either injected into packaging units or moved to the next production phase, such as for ice cream sandwiches or pre-packed cones.

Pneumatic Systems: Compressed air is the driving force behind numerous pneumatic systems and components utilised in the manufacturing of ice cream. These pneumatic systems are frequently employed in automated tasks like filling ice cream containers, sealing packaging, and operating conveyor belts. Air compressors generate the required pressure to power these systems, guaranteeing seamless and efficient operations.

Cleaning and Sanitisation: Maintaining cleanliness and hygiene is crucial in ice cream production as it is a consumable product. Compressed air finds application in the cleaning and sanitising equipment and production lines in an ice cream factory. Air blowguns or air jets are utilised to eliminate debris, dust, and any remaining ice cream residue from surfaces and machinery, creating a hygienic production environment.

Packaging: Compressed air is involved in the packaging stage of ice cream manufacturing. It is often used in pneumatic systems to operate packaging machinery, such as sealers, label applicators, and conveyors. sealers, label applicators, and conveyors for the efficient packaging of ice cream products. Compressed air ensures the smooth operation of these machines, facilitating the efficient packaging of ice cream products. Advanced packaging solutions are continuously driving efficiency and reducing production costs in various industries.

Air Compressor for Ice Cream Manufacturing

As mentioned, direct contact with the food product, such as the ice cream mix, requires compressed air to be completely free of contaminants. For direct contact applications, it is important that the air compressor is ISO 8573-1 certified to ensure the purity of the air.

ELGi’s OF Series and AB Series air compressors are ISO 8573-1 certified. The ELGi AB Series is also certified with ISO 8573-7, and comes with food-grade coating on the internal components. The pipes for both ELGi oil free screw air compressors also have a special e-coating which ensures consistently clean and oil-free air, along with optimised rotor clearances that provide consistent air delivery.

The OF and AB Series are powered by ELGi-designed and manufactured air ends for industry-leading reliability and efficiency. ELGi’s unique η-V rotor design reduces pressure losses and increases stage efficiencies, leading to an optimised compressed air system.

It is also useful to note that ELGi is an ISO 22000-certified organisation, which means that ELGi compressors are manufactured in an environment certified for food safety management processes.

However, not all stages of ice cream manufacturing require oil-free compressed air. Processes such as operations of pneumatic machines or conveyor belts can be powered by an oil-lubricated air compressor. Even for such applications, using food-grade oil in the compression system is beneficial to avoid any accidental contamination. See below for an example of ELGi’s EN Series supporting ice cream manufacturing for a factory in Poland.

Compressed air is crucial in creating the delicious ice cream we all enjoy, from manufacturing to processing, packaging, and safe storage. Whether you prefer an ice pop, a novelty bar, or a classic ice cream cone, compressed air plays a vital role in its creation. To learn more about how ELGi’s oil-free air compressors are used in ice cream manufacturing, visit https://www.elgi.com/eu/air-compressor-food-beverage/.