Guide Ring Blade Protrusion for Impeller Pump De-aeration
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Solution Overview
Problem
Heated impeller pumps in domestic appliances face issues with air bubbles interfering with operation, leading to heat cushions that can cause breakdowns, due to insufficient heat energy absorption by small air bubbles, and existing guide rings do not effectively address de-aeration.
Innovation Solution
A guide ring with a base body shaped as a circumferential ring featuring blades with a protrusion or thickening on the outer edge, which creates a channel for air bubbles to rise and collect, enhancing de-aeration by generating a diffuser-type effect and increasing pressure, improving water guidance and pump efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air bubbles are present in the heated impeller pump, then heat cushions form causing pump breakdown, but existing guide rings do not effectively remove air bubbles
Solution Approach 1:
The guide ring extracts air bubbles from the liquid flow by providing a dedicated separation zone. The blade structure with protrusions creates channels that allow air bubbles to be separated from the water flow and collected in the guide ring's hollow space, removing the harmful factor before it can cause heat cushion formation.
Solution Approach 2:
The guide ring converts the harmful presence of air bubbles into a beneficial de-aeration process. By designing the guide ring with specific blade geometries and protrusions, the structure guides air bubbles to rise and collect in controlled zones, transforming the problematic air-liquid mixture into separated phases where air is removed and water is delivered cleanly to the impeller.
2Use of energy by moving object
If small air bubbles are present in the heated liquid, then heat energy absorption is insufficient, but existing guide rings cannot effectively address de-aeration
Solution Approach 1:
The guide ring utilizes hydraulic principles to separate air bubbles from liquid flow. The blade structures create controlled flow patterns and pressure zones that exploit the density difference between air and water, allowing air bubbles to rise and collect while water continues its flow path to the impeller, ensuring proper de-aeration before heating.
3Productivity
If water flow guidance is insufficient in the pump chamber, then pump efficiency decreases, but complex guide structures increase device complexity
Solution Approach 1:
The guide ring is segmented into multiple functional blades arranged circumferentially around the pump chamber inlet. Each blade performs a specific function in guiding and separating the fluid flow, with protrusions at specific positions to create separation zones. This segmentation allows complex flow control to be achieved through multiple simple, identical elements rather than a single complex structure.
Solution Approach 2:
The guide ring applies local quality variations through protrusions at specific positions on the blades. These localized structural features create specific flow separation zones where air bubbles are directed, while other regions of the blades maintain smooth surfaces for efficient water flow. This localized modification achieves effective de-aeration without requiring complex structures throughout the entire guide ring.
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 guide ring effectively removes air bubbles, preventing heat cushions and improving pump efficiency by accelerating water flow and increasing hydraulic efficiency, especially at higher flow rates, and reduces the risk of pump breakdown.
Implementation Method 1
The blade protrudes outwards and extends longitudinally along the base body over at least a part of a periphery. The blade may have a pitch relative to the central longitudinal axis, and may have a protrusion or thickening arranged on at least one side of an outer edge of the blade... creates a channel for air bubbles to rise and collect
Implementation Method 2
enhancing de-aeration by generating a diffuser-type effect and increasing pressure, improving water guidance and pump efficiency
Data Source
AI summary
A guide ring for a heated impeller pump for dish washers may include a base body in the type of a circumferential ring having a central longitudinal axis and which is configured for arrangement in a pump chamber of the impeller pump. At least one blade may be arranged on a radial outer surface of the base body, which protrudes outwards and which extends longitudinally along the base body over at least a part of the periphery thereof and which has a pitch in relation to the central longitudinal axis. At least on one side of the blade, a protrusion or a thickening may be provided on the outer edge thereof. The latter can form a channel configured to remove air bubbles from the pump chamber.