Conical-Hub Cooling Water Stirrer for Uniform Flow and Ice Noise Control
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Solution Overview
Problem
Existing water purifiers with axial radial-flow blades suffer from reduced cooling performance due to minimal water movement in certain areas and generate resonance noise during operation, which affects the efficiency and noise levels of the cooling process.
Innovation Solution
A water purifier design incorporating a stirrer with a conical hub and radially extending blades, which generates a circular and radial water flow to maintain uniform temperature and reduce noise by preventing ice formation from moving and causing resonance, while a separator divides the cooling water tank into spaces to isolate ice and enhance heat exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If axial radial-flow blades are used to reduce resonance noise, then noise is reduced, but cooling performance deteriorates due to minimal water movement in certain areas
Solution Approach 1:
The stirrer blade is segmented into multiple sections (first blade section, second blade section, third blade section) with different functions. The first section generates radial flow, the second section generates axial flow, and the third section prevents ice movement. This segmentation allows the blade to achieve multiple objectives simultaneously: reducing resonance noise while maintaining cooling performance through comprehensive water circulation.
2Object-affected harmful factors
If axial radial-flow blades are used, then resonance noise is reduced, but water circulation effectiveness deteriorates
Solution Approach 1:
The blade is divided into three functional sections: the first section (radial extension) generates strong radial flow for noise reduction, the second section (downward extension) creates axial flow for vertical circulation, and the third section (upper extension) prevents ice movement. This segmentation enables the blade to achieve both noise reduction and effective water circulation simultaneously.
Solution Approach 2:
Different sections of the blade are designed with different geometries and orientations to perform different functions. The radial section addresses noise, the downward section addresses vertical circulation, and the upper section addresses ice prevention. Each local section is optimized for its specific function, achieving comprehensive performance improvement.
3Device complexity
If conventional stirrer blades are used, then结构简单 (structure is simple), but ice formation moves and causes resonance noise
Solution Approach 1:
The blade is segmented into three sections with the third section (upper extension) specifically designed to prevent ice formation and movement. This segmentation adds minimal structural complexity while effectively eliminating ice-related resonance noise through the upward extension that disrupts ice accumulation patterns.
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 design enhances cooling performance by ensuring uniform water circulation and reduces noise by minimizing resonance and ice-related disturbances, leading to improved heat exchange efficiency and quieter operation.
Implementation Method 1
A water purifier design incorporating a stirrer with a conical hub and radially extending blades, which generates a circular and radial water flow
Implementation Method 2
Refrigerant in the evaporator cools the water within the tank through a first heat exchange, and purified water in the cold water coil is cooled by a second heat exchange with the cooled water in the tank
Implementation Method 3
a separator divides the cooling water tank into spaces to isolate ice and enhance heat exchange
Data Source
AI summary
A stirrer includes a stirring shaft; a plurality of mixing wings extending from the lower end of the stirring shaft and spaced from each other around the stirring shaft; and a conical hub connecting the lower ends of the mixing wings.