Blender Adaptive Pulsing Control for Crushed Ice Processing Efficiency
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Solution Overview
Problem
Conventional household blenders with crushed ice functionality face inefficiencies due to constant, preprogrammed pulsing patterns that fail to accommodate variations in content properties and quantities, leading to suboptimal processing and mixing results.
Innovation Solution
A blender with a motor-driven cutter assembly and a control system that adjusts speed based on content settlement, featuring a predetermined operating speed, reduction to a settling speed, and reacceleration to optimize processing, using a speed sensor and controller to manage the pulsing pattern dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a constant preprogrammed pulsing pattern is used for crushed ice functionality, then hands-free operation is enabled, but processing efficiency deteriorates and ice crushing quality becomes inconsistent
Solution Approach 1:
The blender incorporates a sensor system that detects the presence and state of ice cubes in the processing chamber. This feedback mechanism allows the control system to adjust the pulsing pattern dynamically based on actual processing conditions, enabling both hands-free operation and optimized processing efficiency. The system monitors ice cube position and adjusts pulse duration and frequency accordingly.
Solution Approach 2:
The pulsing pattern transitions from a static preprogrammed sequence to a dynamic adaptive pattern. The control system modifies pulse duration, frequency, and intensity in real-time based on sensor feedback about ice cube settlement and processing progress. This dynamic adjustment optimizes crushing efficiency while maintaining hands-free operation.
2Manufacturing precision
If the pulsing pattern is slowed to allow content settlement, then mixing efficiency improves, but total processing time increases
Solution Approach 1:
The system employs periodic pulsing action where the cutter assembly alternates between rotation and stationary positions. During stationary phases, ice cubes settle around the cutter for optimal mixing; during rotation phases, crushing action is applied. This periodic cycle repeats adaptively, balancing settlement time with processing speed to achieve both mixing efficiency and reasonable processing time.
Solution Approach 2:
Before each crushing pulse, the system allows ice cubes to settle into position around the cutter assembly. This preliminary settlement action ensures that when the cutter rotates, the ice is optimally positioned for efficient crushing and mixing, reducing the time needed for subsequent processing cycles.
3Productivity
If the pulsing pattern is accelerated to reduce processing time, then productivity improves, but blending performance deteriorates due to insufficient content settlement
Solution Approach 1:
The sensor system continuously monitors whether ice cubes have settled around the cutter assembly before initiating a crushing pulse. This feedback ensures that the cutter only rotates when ice is in the optimal position, preventing wasted rotation cycles that would occur with accelerated but untimed pulsing. The system maintains high productivity by quickly detecting settlement and immediately initiating the next pulse.
Solution Approach 2:
The system allows the ice cubes to self-settle around the cutter assembly during off-pulse intervals, eliminating the need for mechanical intervention to position the material. This self-service settlement mechanism works efficiently at higher speeds because the cutter's own rotation and the ice's natural movement under gravity accomplish the positioning without additional energy input or complex mechanisms.
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 adaptive speed control ensures efficient processing and mixing by simulating manual operation, optimizing the crushing of ice and other ingredients by varying the pulsing pattern based on content load, reducing processing time and improving comminution performance.
Implementation Method 1
a magnet and reed switch assembly which generates a frequency signal in response to the rotational speed of the motor
Implementation Method 2
a control circuit including a microprocessor, a triac switch, and a power supply which are operably coupled to the motor and the frequency signal to cycle power to the motor in response to the frequency signal
Data Source
AI summary
Processing food items in a blender by operating the cutter assembly at a predetermined operating speed, reducing the operating speed of the cutter assembly t, and accelerating the operating speed of the cutter assembly in response to the items in the container having settled around the cutter assembly until the food items are suspended above the cutter assembly.