Multi-Angle Blender Blade Assembly for Even Crushing and Lower Noise
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Solution Overview
Problem
Conventional blenders have inefficiencies in food processing due to limited blade configurations, leading to prolonged processing times and noise issues, as they primarily focus on crushing food at the lower end of the container and generate vortices that increase noise.
Innovation Solution
A blender design featuring a main blade unit with multiple blades of varying bending and twisting angles, including horizontal, upward, and downward blades, along with an auxiliary blade unit, where the blades intersect at predetermined angles, and have corrugated leading edges to enhance cutting efficiency and reduce noise by minimizing vortex generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple blades are bent upward and downward to increase crushing area, then the crushing area is increased, but noise is increased due to multiple blades rotating
Solution Approach 1:
The patent applies this principle by making the blades thin and flexible with corrugated leading edges. The thin blade structure reduces the surface area that generates noise during rotation, while the corrugated leading edges minimize vortex formation. This allows multiple blades to be used for increased crushing area without proportionally increasing noise levels.
Solution Approach 2:
The patent changes the physical parameters of the blades by introducing corrugated leading edges with specific wave patterns. This modifies the flow characteristics around the blades, reducing vortex generation and associated noise. The corrugation parameters (wave height, wavelength, orientation) are optimized to balance crushing effectiveness with noise reduction.
2Strength
If gussets are formed on blades to reinforce bent portions, then the strength is improved, but vortices and noise are generated
Solution Approach 1:
The patent replaces the angular gusset structure with curved, aerodynamic blade designs featuring corrugated leading edges. The curved surfaces and gradual transitions eliminate sharp edges that generate vortices, while maintaining structural strength through optimized curvature and thickness distribution. The corrugated pattern provides both structural reinforcement and vortex reduction.
3Device complexity
If blades rotate horizontally to maintain symmetry, then the structure is simple, but crushing is focused only on lower end food and mixing is improper
Solution Approach 1:
The patent introduces asymmetry in blade configuration with a combination of upward-bent, downward-bent, and horizontal blades arranged in a specific pattern. This asymmetric arrangement creates multiple crushing zones throughout the container, improving food processing efficiency while maintaining rotational symmetry for structural simplicity. The corrugated leading edges are oriented at different angles on different blades to enhance mixing.
Solution Approach 2:
The patent adds vertical dimension to the blade configuration by bending some blades upward and others downward, in addition to horizontal blades. This three-dimensional blade arrangement processes food at multiple vertical levels simultaneously, improving overall crushing and mixing efficiency without significantly increasing structural complexity.
4Ease of manufacture
If flat plate blades with predetermined thickness are used, then manufacturing is simple, but noise is increased due to multiple blades
Solution Approach 1:
The patent transitions from thick flat plate blades to thin, flexible blade structures with corrugated leading edges. This thin-film approach reduces the noise-generating surface area while maintaining cutting effectiveness through the corrugated edge geometry. The blades can still be manufactured using standard processes, but with optimized thickness and corrugation patterns.
Data Source
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AI summary
Proposed is a blender in which multiple blades have different bending or twisting angles. The blender includes a container body (100) in which food is received, a main body (500) provided under the container body (100) and configured to support the container body (100), a container lid (400) mounted detachably to the upper surface of the container body (100) and configured to open and close the upper surface of the container body (100), and a blade assembly (200) which crushes food contained in the container body (100) by blades. The blade assembly (200) includes a main blade unit (250) having multiple main blades (250b), and an auxiliary blade unit (252) having an auxiliary blade (252b) located between the multiple main blades (250b), wherein the multiple main blades (250b) have bending or twisting angles different from each other.