Frying Technology: DOs and Donuts

An automated donut production line embodies a carefully choreographed interplay of technological components, where the fryer takes center stage. Its calculated interactions with the dough’s journey, the conveyor belt, and subsequent processes ultimately contribute to the high-quality, consistent, and efficiently produced fried goods that meet market demands.

In the world of food processing, the art of frying dough has stood the test of time, producing beloved treats like donuts, churros, and samosas. As demand grows, so does the need for efficient and reliable industrial equipment tailored to the task. From small-capacity in-store machines to large-scale industrial lines, manufacturers have developed an array of options to suit every food processor’s needs.

For local bakeries, cafes, and small-scale food establishments, small-capacity in-store frying machines offer a compact solution that doesn’t compromise on quality. These machines are designed to handle moderate quantities of dough while delivering consistent results. 

In the realm of mass production, large capacity industrial frying lines take center stage. These powerhouses are designed to churn out vast quantities of fried dough products without compromising on quality or efficiency. The features that food processors prioritize in these setups include:

1. High Throughput: Industrial lines must handle a continuous flow of dough without bottlenecks, ensuring production quotas are met in a timely manner.
2. Automation and Control: Precision matters. Automation features such as programmable recipes, temperature control, and monitoring systems enhance product consistency and reduce human error.
3. Safety: With larger operations come increased safety concerns. Industrial lines should adhere to strict safety standards, including fire prevention measures and ergonomic designs.
4. Customizability: Food processors often have unique requirements based on their product offerings. Industrial lines that can be tailored or configured for specific dough types and frying techniques are highly sought after.
5. Durability and Maintenance: Continuous operation takes a toll on equipment. Processors value robust machines that require minimal downtime for maintenance and repairs.

Automation & Flexibility

WP Kemper, a producer of frying modules, says that the most important aspect when buying a fryer for an industrial bakery is the fully automated process. “The WP Kemper fryers, at the larger end, are designed with a fully automated process in mind. Every aspect of the fryer, from infeed, conveying speed, oil level, oil top up, oil temperature, oil filtration, product turning and discharge are all controlled through the computer system,” they explain. Reliability, easy cleaning and energy efficiency are also must for such equipment.

Equipment flexibility and turning of the products in order to maintain the shape are also among the challenges of the donut frying process, WP Kemper experts point out. “Our equipment has been designed with a great amount of flexibility in mind. The fryer is speed adjustable to have flexibility in the frying times and capacity. In addition to this, the turning systems were developed using a cam pneumatic drive for the trays and a height adjustable ramp for the bars, to ensure that all products turn effectively, regardless of the size.” 

You can read the rest of this article in the July-August issue of European Baker & Biscuit, which you can access by clicking here.