Drinking Straw with Thermal-Actuated Partition for Dishwasher Cleaning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Reusable drinking straws are difficult to clean, especially in dishwashers, due to the 'rinsing shadow' effect and capillary issues, which hinders their multiple use and leads to detergent residue retention.
Innovation Solution
A drinking straw design featuring a partition that opens automatically when heated, utilizing a bimetal or shape memory material actuating element, allowing for easy cleaning without manual intervention, and automatically closing post-rinsing, ensuring thorough cleaning and preventing unwanted opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a partition is added to enable the wall to be opened for cleaning, then cleaning accessibility is improved, but device complexity increases due to the need for actuating mechanisms
Solution Approach 1:
The drinking straw performs the opening action automatically through self-service by utilizing the thermal energy already present in the dishwasher environment. The shape memory material or bimetal strip acts as an actuating element that automatically opens the partition when exposed to heating, eliminating the need for external actuators, motors, or complex control systems. This resolves the contradiction by improving cleaning accessibility without significantly increasing device complexity.
Solution Approach 2:
The invention changes the physical parameter of the actuating element (shape memory material or bimetal strip) in response to temperature changes. When heated above a specific temperature during dishwasher operation, the material undergoes a phase transition or thermal expansion that causes the partition to open automatically. This parameter change approach enables automatic opening without complex mechanisms, resolving the contradiction between cleaning accessibility and device complexity.
2Ease of operation
If the wall is opened automatically during rinsing, then cleaning effectiveness is improved, but reliability decreases due to potential unintended opening during use
Solution Approach 1:
The actuating element is designed with a specific transition temperature that is carefully selected to be above typical drinking temperatures but below dishwasher heating temperatures. This parameter setting ensures the partition remains closed during normal use (reliability) but opens automatically during dishwasher rinsing (cleaning effectiveness). The temperature parameter acts as a reliable trigger that distinguishes between use and cleaning conditions.
Solution Approach 2:
The invention converts the potentially harmful effect of thermal expansion (which could cause unintended opening) into a beneficial automatic opening mechanism during cleaning. By utilizing the heating process inherent in dishwasher operation, the thermal energy that could cause reliability issues is instead harnessed to automatically open the partition for thorough cleaning, turning a potential harm into a benefit.
3Extent of automation
If heating is used to open the straw automatically, then manual intervention is eliminated, but energy consumption increases during the rinsing process
Solution Approach 1:
The drinking straw utilizes the thermal energy already present in the dishwasher environment to open itself automatically. The actuating element (shape memory material or bimetal strip) converts the ambient heat from the dishwasher into mechanical motion to open the partition. This self-service approach eliminates the need for additional energy-consuming actuators or motors, achieving automatic opening without significant additional energy consumption.
Solution Approach 2:
The invention replaces a potential mechanical actuation system (motors, solenoids, or manual operation) with a thermal-mechanical conversion system. The actuating element directly converts thermal energy from the dishwasher heating process into mechanical motion to open the partition. This substitution eliminates complex mechanical actuation systems and their associated energy consumption while achieving automatic opening.
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
Facilitates efficient cleaning of the straw's interior in both dishwasher and manual rinsing processes, ensuring thorough sanitation and preventing residue accumulation, while maintaining a secure closed state during use.
Implementation Method 1
The fact that the actuating element comprises a bimetal or a shape memory material, in particular a two-way shape memory material, means that the desired opening and closing process can be advantageously achieved.
Implementation Method 2
The fact that the actuating element comprises a bimetal or a shape memory material, in particular a two-way shape memory material, means that the desired opening and closing process can be advantageously achieved.
Implementation Method 3
Heating above the specified temperature typically takes place in a dishwasher
Data Source
AI summary
A drinking straw with a cavity extending between two open ends of the drinking straw and surrounded by a wall. The wall has a division extending between the ends which makes it possible to open the wall along the division. The drinking straw comprises an actuating element which is set up to open the wall along the division as a result of at least partial heating of the drinking straw or to open on the basis of at least partial heating of the drinking straw above a specific temperature.