Programmable Drum-Mounted Detergent Dispenser for Timed Release

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Solution Overview

Problem

Current washing systems face inefficiencies in detergent dispensing, leading to waste and damage within the washing machine due to complex water circuits and the inability to control detergent release during different wash cycles, especially with movable dispensers that lack programmability and coordination with washing programs.

Innovation Solution

A device with a compartment for dispensing substances that can be inserted and extracted from a container, featuring a dispensing surface with adjustable access means controlled by an actuator and programmable controlling means, allowing for precise timing and coordination with washing programs, and powered by a movable power supply system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a drawer with multiple compartments and inner conduits is used for detergent dispensing, then the detergent can be stored and dispensed during wash cycles, but the system requires a complex circuit of water conducts that occupies space and causes detergent waste and machine deterioration

Engineering Contradiction:
Improvedetergent dispensing capabilityVSAvoidwater conduct circuit complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The invention extracts the detergent dispensing function from the fixed drawer system and relocates it to a movable dispenser that can be directly inserted into the washing drum. This eliminates the need for complex water conduct circuits connecting to fixed compartments, as the dispenser moves with the drum and dispenses detergent directly at the point of use.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The movable dispenser acts as an intermediary between the detergent storage and the washing drum. Instead of water conducting circuits serving as the intermediary, the physical dispenser container moves through the wash cycle and releases detergent directly onto the fabrics, simplifying the system architecture.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Loss of substance

If movable dispensers with open compartments are used, then detergent can be applied directly on fabrics without waste, but the detergent is released immediately at the beginning of the wash cycle making it impossible to program the release timing

Engineering Contradiction:
Improvedetergent waste reductionVSAvoidprogrammable release control
Core Design Contradiction:
Loss of substanceVSExtent of automation

Solution Approach 1:

The dispenser incorporates a movable closure element that can dynamically open or close the dispensing opening based on programmed timing. This dynamic control allows the dispenser to maintain closure during transport and washing, then open at predetermined moments to release detergent, combining direct application with programmable control.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The dispenser is pre-programmed with release timing before the wash cycle begins. The closure element remains closed during the initial phases, and the system preliminarily determines when detergent should be released based on the wash program, enabling coordinated dispensing at optimal moments rather than immediate release.

Inventive Principle:
Principle #10Preliminary action

3Duration of action of moving object

If detergent tablets that dissolve slowly are used, then prolonged detergent release occurs during the wash cycle, but it becomes inconceivable to directly control the release of detergent during different steps of the wash cycle

Engineering Contradiction:
Improvedetergent release durationVSAvoidcontrolled release timing
Core Design Contradiction:
Duration of action of moving objectVSExtent of automation

Solution Approach 1:

The closure element provides dynamic control over the dispensing opening, allowing the system to switch between complete closure, partial opening, and full opening states. This enables precise control of detergent release timing and duration, replacing slow dissolution with programmable mechanical control that can adapt to different wash cycle requirements.

Inventive Principle:
Principle #15Dynamics

4Quantity of substance

If fixed drawer dispensers are used, then detergent storage is provided, but detergent remains inside the compartments or water flowing conducts causing waste and deterioration of washing machine parts

Engineering Contradiction:
Improvedetergent storage capacityVSAvoiddetergent waste in compartments and conducts
Core Design Contradiction:
Quantity of substanceVSLoss of substance

Solution Approach 1:

The invention extracts the detergent from fixed compartments and water conducts and places it in a movable dispenser that travels with the washing drum. This ensures detergent is only present where needed (in the dispenser) and is completely utilized when dispensed, eliminating residual detergent left in fixed infrastructure.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The movable dispenser serves itself by containing all necessary detergent within its structure and delivering it directly to the washing drum. The dispenser eliminates the need for external water conducts to deliver detergent, making the system self-contained and preventing detergent from being trapped in external infrastructure.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP3150757B1Automatic dispenser
Publication Date: 2018.03.07 CANDY
  • EP3150757B1 patent drawingFigure 1
  • EP3150757B1 patent drawingFigure 2
  • EP3150757B1 patent drawingFigure 3(a)~3(f)

AI summary

Device (10) for automatically dispensing at least a solid or fluid substance (S) within a container (C), wherein the device (10) is insertable into the container (C) and extractable from the same, characterized by comprising at least a compartment (12) for containing said substance (S) having a dispensing surface (14) for dispensing the substance (S) outward the compartment (12) into the container (C), at least access means (16) coupled to said dispensing surface (14) able to achieve at least a configuration of total opening in order to allow a dispensing of the substance (S) through the entire dispensing surface (14) and of total closure in order to prevent the dispensing of the substance (S) through the dispensing surface (14), at least an actuator (18) connected to the access means (16) for activating said access means (16), controlling means (20) connected to the actuator (18) and programmable for automatically managing the dispensing of said substance (S) within the container (C), by varying the configurations of said access means (16) and power supply means (22) connected to said controlling means (20) for supplying the device (10), wherein said device (10) is movable with respect to the container (C) and the dispensing of the substance (S) within the container (C) occurs based on the relative movement of the device (10) with respect to the container (C).