Chocolate Tempering Apparatus Using Dual-Stream Segmentation
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Solution Overview
Problem
Existing continuous tempering methods for chocolate mass with high fat content are energy-intensive and inefficient, leading to the creation of unstable crystals that reduce product quality and increase energy consumption, especially when tempering high-fat recipes like milk chocolate, white chocolate, or nougat, due to the large size and high energy requirements of tempering machines.
Innovation Solution
The method involves dividing the chocolate mass into two streams, where one stream is cooled to create crystals and the other remains crystal-free, with the latter being cooled to a temperature just above the former's crystallization temperature to avoid crystal formation, allowing for efficient mixing and homogenous distribution of crystals, thereby reducing energy consumption and stabilizing βV-crystals without the need for additional seed materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the chocolate mass is cooled to create crystals in the crystallisation stage, then crystals are formed in the mass, but a huge amount of unstable crystals are created which requires time-consuming and energy-consuming re-melting during conditioning
Solution Approach 1:
The chocolate mass flow is divided into two separate streams: a first stream that is cooled to create stable crystals in a controlled manner, and a second stream that is kept at a higher temperature to remain crystal-free. This segmentation allows selective crystallisation only in the portion of mass that needs it, avoiding the creation of unstable crystals throughout the entire mass and eliminating the energy-consuming re-melting step required in conventional single-stream processing.
2Productivity
If the tempering apparatus is designed with large capacity to handle high-fat mass, then more mass can be tempered, but the apparatus becomes larger and more expensive
Solution Approach 1:
By dividing the mass into two streams with different temperature treatments, the apparatus can process high-fat mass more efficiently. The first stream undergoes full crystallisation treatment while the second stream bypasses the crystallisation stage, allowing the apparatus to handle larger volumes of mass through the same equipment capacity, thereby increasing productivity without proportionally increasing apparatus size.
3Stability of the object's composition
If all chocolate mass is cooled to the crystallisation temperature, then crystals are formed throughout the mass, but the energy consumption increases significantly
Solution Approach 1:
The mass flow is segmented into two streams with different thermal treatments. The first stream is cooled to the crystallisation temperature to form stable crystals, while the second stream is maintained at a higher temperature to prevent crystal formation. This segmentation reduces the total cooling energy required compared to cooling the entire mass to crystallisation temperature, as only the first stream undergoes the energy-intensive cooling process.
4Ease of operation
If the second stream is cooled to the same temperature as the first stream, then both streams can be mixed, but crystals would form in the second stream causing instability
Solution Approach 1:
The two streams are assigned different temperature characteristics suited to their specific functions: the first stream is cooled to the crystallisation temperature to form stable crystals, while the second stream is maintained at a higher temperature to remain crystal-free and stable. This local differentiation of temperature quality allows both streams to be compatible for mixing while maintaining their respective crystal stability characteristics.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly reduces energy consumption by up to 70% and achieves a higher quality chocolate product with fewer unstable crystals, allowing for smaller, more efficient tempering apparatuses and increased production capacity while maintaining the stability of βV-crystals.
Implementation Method 1
the first stream of mass is cooled, so that crystals are created in the first stream of mass
Implementation Method 2
the second stream of mass is cooled to a temperature just above the crystallization temperature to avoid crystal formation
Implementation Method 3
the first stream of mass and the second stream of mass are mixed together into one final crystallised stream of mass
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
Method and apparatus (1) for continuous tempering of a fat-containing, crystallisable chocolate mass, which has been heated, so that it is liquid, pumpable and free from crystals. The apparatus comprises a branching means (5) adapted for dividing the mass into a first stream of mass (9) and a second stream of mass (6), as well as cooling means (8, 11) adapted for cooling of the mass, so that crystals are created in the first stream of mass, and so that the second stream of mass is still being essentially free from crystals. Furthermore is mixing means (14) adapted for mixing the first stream of mass and the second stream of mass together into one final crystallised stream of mass. The method and apparatus is especially energy-saving.