Dishwasher Detergent Dispenser with Pre-Dissolution Liquid Flow
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Solution Overview
Problem
Existing dispensing devices for washing agents in dishwashing machines often fail to ensure complete dissolution of detergents due to design limitations, affecting the effectiveness of the dishwashing process.
Innovation Solution
The dispensing device features a passage at the top of the receptacle that connects with an overlying region, allowing washing liquid from the spraying impeller to flow into the receptacle, ensuring partial dissolution of the detergent during the washing cycle, and an electrically operated actuator opens the cover to dispense the detergent mixture into the washing chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the washing agent is dispensed by gravity when the cover is opened, then the detergent is delivered into the washing chamber, but the washing agent does not dissolve completely or does not dissolve at all
Solution Approach 1:
The patent applies preliminary action by introducing washing liquid into the receptacle before the washing agent is dispensed. The conduit system pre-delivers washing liquid to the receptacle, so that when the washing agent is subsequently dispensed, it immediately contacts the pre-positioned washing liquid and dissolves effectively, eliminating the dissolution problem without requiring complex additional mechanisms.
Solution Approach 2:
The patent uses washing liquid as an intermediary substance that facilitates the dissolution of the washing agent. The conduit system acts as a mediator to deliver the washing liquid to the receptacle, creating a dissolution environment before the washing agent is introduced, thereby ensuring complete dissolution without complicating the dispensing structure.
2Productivity
If the cover is opened by an actuator device during the washing cycle, then the washing agent is dispensed, but the washing agent fails to dissolve due to lack of washing liquid contact
Solution Approach 1:
The system performs preliminary action by delivering washing liquid to the receptacle through the conduit before the washing agent is dispensed. This ensures that when the actuator opens the cover and the washing agent is released, it immediately contacts the pre-positioned washing liquid, guaranteeing effective dissolution while maintaining efficient dispensing operation.
Solution Approach 2:
The patent ensures continuity of useful action by maintaining a continuous supply of washing liquid in the receptacle through the conduit system. This continuous presence of washing liquid ensures that whenever the washing agent is dispensed, dissolution can occur immediately and effectively, maintaining both dispensing efficiency and dissolution reliability throughout the washing cycle.
3Ease of operation
If the receptacle is shaped for gravity dispensing, then the washing agent falls into the washing chamber when the cover is opened, but complete dissolution cannot be achieved
Solution Approach 1:
The patent maintains the simple gravity dispensing mechanism while adding preliminary action by delivering washing liquid to the receptacle through the conduit before dispensing. This ensures that the washing agent dissolves completely as it falls or immediately after contact with the pre-positioned washing liquid, achieving complete dissolution without modifying the ease of operation of the gravity-based dispensing mechanism.
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
This solution enhances the dispensing of washing agents, leading to improved dishwashing effectiveness by ensuring partial dissolution and efficient delivery of detergents during the washing cycle.
Implementation Method 1
a spraying impeller adapted for periodically emitting a flow of a washing liquid towards a portion of said wall of the door, above the dispensing device
Implementation Method 2
the receptacle is, in particular, shaped so that when the associated cover is opened, the detergent or washing agent contained in the receptacle falls by gravity
Data Source
AI summary
A dispensing device (1) is to be mounted in a wall (W) of a rotatable door (D) associated with the washing chamber (WC) of a dishwashing machine, wherein in said washing chamber (WC) there is rotatably mounted at least one spraying impeller (S) adapted to periodically address a flow (F) of washing liquid towards a portion of said wall (W) above the dispensing device (1).