Industrial Cooking Kettle Manufacturers
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Browse Industrial Cooking Kettle Suppliers →Industrial cooking kettles — design types and thermal processing applications
Industrial cooking kettles are jacketed cooking vessels in which food product is heated by steam or hot water circulating through the double-wall jacket surrounding the vessel. This indirect heating method (unlike direct-fire heating) gives uniform, controllable heating without hot spots or direct flame contact with the product. Key design features include: jacket design (single jacket for low-pressure steam; half-pipe jacket for high-pressure steam; dimple-plate jacket — each affects heating performance and CIP cleanability); agitator type (open-vessel paddle or anchor agitator; scraped-surface agitator for viscous products; no agitator for gentle products where stirring would cause damage); vessel orientation (fixed upright; tilting for easy discharge; tilt-and-stir); vessel volume; material (food-grade stainless steel 304 or 316L, with 316L preferred for salty or acidic products); and CIP capability. Cooking kettles are used in thermal processing for sauces, soups, jams, confectionery, dairy, and food ingredient cooking.
Frequently asked questions
What steam pressure is required for a cooking kettle?
The steam pressure supplied to the jacket of a cooking kettle determines the steam temperature (and therefore the maximum heating temperature achievable in the product). Common steam pressures for food cooking kettles: low-pressure steam at 1–2 bar (steam temperature approximately 120–135°C) — suitable for most cooking applications, including sauces, soups, jams, and confectionery; medium-pressure steam at 3–6 bar (steam temperature approximately 144–160°C) — used for applications requiring rapid heating or high process temperatures. The maximum product temperature achievable is always lower than the steam jacket temperature, and the rate of heating depends on the jacket area, the steam pressure, the product viscosity, and the agitation. The site steam supply pressure must be confirmed before specifying the kettle — if site steam pressure is limited, a steam booster or heat transfer oil system may be required.
What is the difference between a batch and continuous cooking system?
A batch cooking kettle processes a fixed quantity of product per cook cycle: the vessel is filled, product is cooked for a set time and temperature programme, and then discharged before the next batch is loaded. Batch systems are flexible (different products, different cook programmes in sequence), easy to clean (full access between batches), and lower capital cost. A continuous cooking system (continuous cooking kettle, continuous steam injector, or scraped-surface heat exchanger in cooking mode) processes product in a continuous flow — product enters at one end and exits at the other at a set flow rate and cook temperature; this is integrated into continuous food processing lines. Continuous systems have higher throughput for a given equipment footprint and better energy efficiency at high and consistent throughput, but are less flexible for product changeovers and require more complex CIP.
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