Supply container for a dispensing device
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Solution Overview
Problem
Existing dispensing devices for pourable detergents in dishwashers face issues with operational reliability due to detergent clumping caused by moisture ingress, leading to clogging and blockages in the metering system, and require manual measurement for each wash cycle.
Innovation Solution
A dispensing device with a closure mechanism that keeps the passage opening between the reservoir and metering chambers closed until first use, preventing moisture ingress and allowing for controlled detergent dispensing, featuring a rotatable closure element and a metering element that moves from a non-metering to a metering position upon insertion, ensuring proper portioning and preventing clumping in the metering chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the passage opening between reservoir chamber and metering chamber is left open for storage, then the supply container can be easily filled and accessed, but moisture ingress causes detergent clumping and operational failures
Solution Approach 1:
A closure element is provided that can be positioned in a closed position to close the passage opening before the supply container is put into use. This preliminary closure action prevents moisture ingress during storage and transport, eliminating detergent clumping while maintaining ease of operation when needed
Solution Approach 2:
The closure element is designed to be movable between an open position (for filling and accessing) and a closed position (for preventing moisture ingress). This dynamic positioning allows the system to adapt between ease of operation and reliability based on operational state
2Reliability
If the supply container is designed with a rotatable closure mechanism, then operational reliability is improved by preventing moisture ingress, but device complexity increases
Solution Approach 1:
The closure element is configured to be movable by the user through simple rotational motion. The mechanism serves itself by using the user's natural handling actions to open/close the passage, eliminating the need for complex automated closure systems while maintaining high reliability
Solution Approach 2:
The closure element may be implemented as a flexible or thin-walled structure that can be easily rotated or moved by the user. This reduces the complexity of the closure mechanism while effectively sealing the passage opening to prevent moisture ingress
3Device complexity
If manual measurement of detergent is required for each wash cycle, then the dispensing system is simple, but productivity decreases due to repeated user intervention
Solution Approach 1:
The manual measurement and dispensing action is replaced by a motor-driven carrier unit that automatically rotates the supply container. This mechanical substitution eliminates repeated user intervention, improving productivity while keeping the overall system relatively simple
Solution Approach 2:
The supply container is designed to work with the motor-driven carrier unit, where the container itself is rotated to enable automatic detergent dispensing. The system serves itself by using the container's own structure in conjunction with simple motorization, eliminating the need for complex measurement mechanisms
Data Source
AI summary
A supply container for a dispensing device for introducing a pourable detergent in metered amounts into a treatment chamber of a program-controlled cleaning appliance, the dispensing device including a rotatable carrier unit, the supply container being replaceably receivable in the carrier unit. The supply container includes: a reservoir chamber; a dispensing opening; a metering chamber connectable to the reservoir chamber via an interposed outlet opening; and a closure device configured to close the outlet opening at least until the supply container is first put into use. The closure device is configured to cooperate with an actuating device to open the outlet opening to provide a flow path of the detergent from the reservoir chamber into the treatment chamber of the appliance via the metering chamber and the dispensing opening.