Offset Statorless Agitator for Baking Mixers
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Solution Overview
Problem
Existing mixing apparatuses for baking preparations often leave insufficiently mixed residues at the center or on the container walls when partially filled, requiring separate removal, and are not cost-effective or easy to maintain and clean.
Innovation Solution
A statorless single-shaft agitator with a rotor body surrounded by a variable external free space between the rotor body and the container wall, featuring a cylindrical and curved wall section arrangement that ensures thorough mixing by creating an asymmetric mixing chamber with a narrowing and expanding cross-section, allowing for better distribution of ingredients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single-shaft agitator with stator and rotor is used in a cylindrical mixing container, then mixing power and structure simplicity are improved, but insufficient mixing residues remain at the center and container walls when partially filled
Solution Approach 1:
The patent applies asymmetry by positioning the agitator shaft offset from the container center axis. The distance between the shaft center and container center is 0.1-0.3 times the container radius, creating an asymmetric mixing chamber that eliminates dead zones at the container walls and center, ensuring thorough mixing even when partially filled.
Solution Approach 2:
The patent introduces a new spatial dimension by offsetting the agitator position from the central axis, transforming the traditional symmetric radial mixing pattern into an asymmetric three-dimensional flow pattern that covers the entire mixing chamber volume more effectively.
2Productivity
If different-sized mixing apparatus are used for different batch sizes, then mixing capacity is improved, but device complexity and cost increase
Solution Approach 1:
The patent achieves universality through the asymmetric agitator design that performs effectively across different fill levels. A single apparatus design can handle varying batch sizes from partial to full capacity without requiring multiple specialized mixing systems, reducing device complexity and cost.
Solution Approach 2:
The asymmetric configuration creates dynamic mixing patterns that adapt to different fill quantities. The offset position ensures that the mixing action effectively covers different volume proportions, allowing one apparatus to dynamically handle various production requirements.
3Power
If a traditional stator-rotor agitator is used, then mixing power is improved, but cleaning difficulty and maintenance cost increase
Solution Approach 1:
The patent extracts the stator component from the traditional stator-rotor system, using only the rotor (agitator) mounted on an offset shaft. This simplification eliminates the stator structure that would be difficult to clean, reducing maintenance complexity while preserving mixing effectiveness through the asymmetric rotor positioning.
Solution Approach 2:
The patent segments the mixing system into a simplified single-rotor configuration without the interlocked stator-rotor mechanism. This segmentation removes the complex interface between stator and rotor that creates cleaning difficulties, allowing easier access and maintenance of the mixing chamber.
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 design ensures thorough mixing of baking preparations regardless of fill quantity, reducing residue and improving ease of maintenance and cleaning, while maintaining structural integrity and cost-effectiveness.
Implementation Method 1
the rotor body fastened to the agitator shaft is surrounded by an external free space which is disposed between the rotor body and the container wall of the mixing container and that the external free space has a variable cross-section along its circumference
Implementation Method 2
single-shaft agitator which has a central axis concentric to the container central axis and whose rotor is driven by a drive motor
Data Source
AI summary
A mixing apparatus has a mixing container disposed in the upper part of the mixing apparatus, preferably standing on a frame, which is open towards the top. The mixing container includes a single-shaft agitator disposed in the lower part of the mixing apparatus. The agitator has a vertically disposed agitator shaft to which is fastened an agitating tool configured as a rotor body which is disposed in the mixing container just above the container base. The single-shaft agitator is a statorless agitator and the rotor body fastened to the agitator shaft is surrounded by an external free space between the rotor body and the container wall of the mixing container. The agitator shaft is adjustable in its spacing distance from the cylinder axis.