mixer
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Solution Overview
Problem
Conventional blenders suffer from reduced grinding performance due to unidirectional rotation of grinding blades, leading to inefficient juice extraction and inconvenience in processing fruits and vegetables, as blending objects are pushed outward by centrifugal force, reducing the grinding and juice production effects.
Innovation Solution
A blender design featuring a controller that controls an internal cylinder to reverse direction and change rotational speed, combined with projections on the internal cylinder surface to induce a downward spiral flow, ensuring blending objects return to the grinding blade, enhancing grinding performance and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the grinding blade rotates unidirectionally at high speed, then the motor can efficiently cut and grind blending objects, but the blending objects are radially pushed outwardly by centrifugal force, significantly reducing grinding effect and juice production
Solution Approach 1:
The patent applies reverse rotation of the internal cylinder to counteract the centrifugal force effect. When the internal cylinder rotates in the opposite direction to the grinding blade rotation, it creates an inward radial flow that pushes blending objects back toward the center, preventing them from being pushed outward and maintaining continuous grinding contact.
Solution Approach 2:
The patent implements periodic alternation between forward and reverse rotation of the internal cylinder. The controller alternates the rotation direction of the internal cylinder during operation, creating periodic cycles of outward and inward material flow that enhance grinding efficiency and prevent material pile-up on the cylinder walls.
2Device complexity
If the grinding blade rotates unidirectionally, then the structure is simple, but an additional juice extractor is needed to extract juice during grinding, leading to inconvenience
Solution Approach 1:
The patent makes the blender capable of multiple functions by adding the internal cylinder with reverse rotation capability. This single addition enables both efficient grinding and effective juice extraction within the same device, eliminating the need for a separate juice extractor and providing multi-functionality without proportionally increasing complexity.
Solution Approach 2:
The patent combines the grinding function and juice extraction function into a single integrated system. The internal cylinder serves dual purposes: it assists in grinding by controlling material flow and enables juice extraction through its reverse rotation that creates centrifugal separation, merging multiple functions into one device.
3Duration of action of moving object
If blending objects flow rotationally while being ground, then the grinding process is continuous, but the objects pile up like a wall on the internal side surface and do not return to the grinding blade, reducing grinding performance
Solution Approach 1:
The patent uses reverse rotation of the internal cylinder to counteract the radial outward flow of blending objects. By rotating in the opposite direction to the grinding blade, the internal cylinder creates an inward flow that prevents material from piling up on the internal side surface and ensures continuous return of material to the grinding blade for sustained grinding performance.
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
The described blender significantly improves grinding performance by preventing blending objects from piling up and ensuring they are effectively ground and juiced, with enhanced dehydration effects through variable rotational speeds and gear-coupled structures, resulting in improved processing efficiency.
Implementation Method 1
blending objects are radially pushed outwardly by centrifugal force to significantly reduce a grinding effect
Implementation Method 2
the projection having a screw projection line shape inducing a downward spiral flow of the blending object may be provided on the internal side surface of the internal cylinder
Data Source
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AI summary
A mixer according to the present invention comprises: a mixer main body provided with an outer container, pulverizing blades, and a blade driving unit for rotating the pulverizing blades; an inner container unit provided with an inner container, arranged inside the outer container, having the pulverizing blades located therein, and with an inner container driving unit for rotating the inner container; and a controller electrically connected to the blade driving unit and inner container driving unit to control both, wherein the inner container is provided with a protruding part on the inner side surface thereof so that the circularly moving foodstuff being mixed gets caught thereon while being pulverized by the pulverizing blades, and, in order to induce a state of imbalance in the foodstuff being mixed in the inner container, the controller controls the inner container driving unit to mix the foodstuff being mixed while repeating the patterns of reverse-rotating the inner container in the direction opposite to the rotational direction of the pulverizing blades and then stopping, or reverse-rotating and then changing the rotational velocity.