Thermosensitive Detergent Metering for Reusable Multi-Dose Delivery
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Solution Overview
Problem
Existing devices for dosing detergents and cleaning agents in washing machines often require manual refilling after each cycle, lack multiple dosing capabilities, and expose users to direct contact with the agents, with previous solutions being limited to single-use or temperature-dependent release mechanisms.
Innovation Solution
A device comprising a storage container, a dosing chamber, and a movable conveying tool with a thermosensitive switch that controls the movement of the tool, allowing for multiple dosing by interrupting and re-establishing the connection between the reservoir and dosing chamber based on temperature changes, ensuring precise and safe delivery of free-flowing detergents and cleaning agents into the washing machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a single-use dosing reservoir is used with temperature-dependent release, then the dosing process is automated, but multiple dosing is not possible and the device cannot be reused
Solution Approach 1:
The conveying tool is designed to be movable between different positions (first position for filling, second position for dosing) rather than being fixed. This dynamic configuration allows the same device to perform multiple dosing cycles by repeatedly transitioning between filling and dosing positions, resolving the contradiction between automation and multiple dosing capability
Solution Approach 2:
The dosing system is divided into separable components: a reservoir that can be removed and refilled, a conveying tool that moves between positions, and a dosing chamber. This segmentation allows the reservoir to be replaced after use while the dosing mechanism remains, enabling multiple dosing cycles and maintaining automation
2Extent of automation
If the reservoir is firmly attached to the laundry drum, then the dosing system is integrated, but the reservoir must be removed and refilled manually after each wash cycle
Solution Approach 1:
The conveying tool's movable design enables automatic refilling by transporting detergent from the reservoir to the dosing chamber without manual intervention. The system dynamically transitions between filling and dosing modes, eliminating the need for manual refilling while maintaining integration
3Extent of automation
If a fusible seal is used to release detergent at specific temperature, then automated release is achieved, but the closure cannot be reused and multiple dosing is not possible
Solution Approach 1:
The movable conveying tool dynamically switches between connected and disconnected states based on temperature. At operating temperature, it moves to the second position to close the reservoir opening and enable dosing. After cooling, it returns to the first position to refill, enabling repeated cycles without replacing the closure
Solution Approach 2:
The system uses temperature parameter changes to control the state of the conveying tool. The thermosensitive switch detects temperature changes and triggers the conveying tool to move between positions, enabling automated, reusable dosing cycles based on thermal conditions
4Adaptability or versatility
If the conveying tool moves to close the reservoir opening, then multiple dosing is enabled, but the structure becomes more complex
Solution Approach 1:
The conveying tool serves multiple functions: it transports detergent from the reservoir to the dosing chamber during filling, and it acts as a closure for the reservoir opening during dosing. This multi-functionality reduces the need for separate components, minimizing structural complexity while enabling multiple dosing
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
Enables multiple, controlled dosing of detergents and cleaning agents without manual intervention, improving user safety and convenience by integrating a thermosensitive switch to manage the dosing process based on ambient temperature changes, ensuring accurate and reliable delivery.
Implementation Method 1
a thermosensitive switch which controls the movement of the conveying tool
Data Source
AI summary
Disclosed is a device comprising a) a reservoir that is provided with a hole, b) a dosing chamber, and c) a movable conveying tool. The reservoir, the dosing chamber, and the conveying tool are disposed such that the dosing chamber can be filled via the hole in the reservoir in a first position of the conveying tool while the hole of the reservoir is closed by means of the surface of the conveying tool in a second position of the conveying tool. The inventive device is characterized in that the conveying tool can be moved from the first position into the second position while the device further comprises a thermosensitive switch which triggers the movement of the conveying tool. The disclosed device is suitable for metering pourable detergents, especially into the interior of cleaning machines.