Appliances with sudsing-reducing flushable detergent dispensers
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Solution Overview
Problem
Existing laundry treating appliances face issues with incomplete removal of treating chemistry from dispensers, leading to residual impacts on subsequent cycles and incorrect dosages due to improper filling and poor mixing of chemistries.
Innovation Solution
A liquid stream is introduced into a dispensing cup from a liquid distribution header, which is fluidly coupled with a water inlet, distributing water to ensure effective flushing and mixing of treating chemistries, reducing sudsing and improving dosage accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If water is flushed through the cup to dispense treating chemistry, then the treating chemistry is dispensed into the treating chamber, but the water may not fully remove the treating chemistry from the cup or there may be poor mixing
Solution Approach 1:
The liquid distribution header segments the water flow into multiple streams that are distributed across different regions of the dispensing cup. This segmentation allows water to contact treating chemistry throughout the entire cup volume, ensuring complete removal and thorough mixing without requiring a complex multi-component dispenser structure.
Solution Approach 2:
The liquid distribution header introduces water flow from an overhead dimension, distributing liquid vertically across the dispensing cup. This dimensional approach enables comprehensive coverage of the cup interior, ensuring complete treating chemistry removal and proper mixing while maintaining a simple dispenser structure.
2Reliability
If water is introduced to flush the cup, then treating chemistry is removed, but residual treating chemistry may negatively impact the efficacy of the next treating chemistry or alter the dosage
Solution Approach 1:
The liquid distribution header performs preliminary flushing action by distributing water across the dispensing cup before the next treating chemistry is dispensed. This preliminary action ensures complete removal of residual treating chemistry, preventing negative impacts on subsequent cycles and maintaining accurate dosing without requiring additional complex components.
3Stability of the object's composition
If a liquid stream is introduced from above into the dispensing cup, then mixing of water and treating chemistry is improved, but sudsing may increase
Solution Approach 1:
The liquid distribution header creates localized water streams that contact treating chemistry at specific regions within the dispensing cup. This localized approach ensures thorough mixing and complete removal of treating chemistry while controlling the intensity and distribution of liquid impact, thereby reducing excessive suds production.
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 solution ensures complete removal of treating chemistry, preventing residual impacts and altering dosages, thereby enhancing the efficacy of subsequent cycles and reducing suds production.
Implementation Method 1
a liquid stream is introduced into a dispensing cup from a liquid distribution header located above the bottom wall and fluidly coupled with a water inlet for distributing water to the dispensing cup
Data Source
AI summary
A fabric treating appliance comprising a treating chamber for receiving fabric for treatment and a treating chemistry dispenser, the treating chemistry dispenser comprising at least one cup with a bottom wall, a siphon tube with a cover, at least one water inlet, and a liquid distribution header coupled with the at least one water inlet for distributing water to the at least one cup.