Laundry washing machine with an automatic dosing device
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Solution Overview
Problem
Existing laundry washing machines with automatic dosing devices require complex and costly flushing chambers and recirculation circuits to supply wash products, increasing the size and manufacturing costs of the machines.
Innovation Solution
A laundry washing machine with an automatic dosing device that uses a recirculation circuit to transfer liquid from one region of the tub to another, with a dispensing line connecting the wash product container directly to the tub, eliminating the need for a flushing chamber and simplifying the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flushing chamber is used to supply water to wash products, then the wash products can be effectively flushed into the washing tub, but the size and manufacturing costs of the dosing device and washing machine increase
Solution Approach 1:
The patent removes the flushing chamber from the system entirely. Instead of using a separate flushing chamber to deliver water and wash products, the invention integrates the wash product container directly into the dosing mechanism, allowing water to be supplied directly to the wash product without requiring a dedicated flushing chamber. This extraction of the flushing chamber eliminates the associated volume increase while maintaining wash product delivery effectiveness through direct water supply to the dosing outlet.
2Reliability
If a flushing chamber and complex water paths are used to convey water and wash products, then the dosing function can be achieved, but the complexity of water paths and wash products paths increases
Solution Approach 1:
The patent merges the water supply path and wash product dispensing path into a single integrated system. Instead of having separate complex paths for water delivery and wash product conveyance, the invention combines these functions so that water is supplied directly to the wash product container through integrated conduits, and the mixture is dispensed through a single outlet. This merging eliminates the need for separate flushing chamber paths and reduces overall system complexity while maintaining reliable dosing function.
3Reliability
If a recirculation circuit with multiple nozzles and hydraulic connections is used, then liquid and detergent can be mixed and sprayed into the drum, but the circuit becomes complex and expensive
Solution Approach 1:
The patent extracts and eliminates the complex recirculation circuit with multiple nozzles and hydraulic connections. Instead of using a recirculation system that draws liquid from the tub bottom, mixes it with detergent through multiple nozzles, and sprays it back into the drum, the invention uses a simplified direct dispensing system where water is supplied directly to the detergent container and the mixture is dispensed through a single outlet directly into the washing tub. This extraction maintains effective detergent distribution while eliminating circuit complexity.
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 design reduces the complexity and size of the automatic dosing device and the washing machine, while ensuring effective distribution of wash products, enhancing the dissolution of detergents and reducing the risk of stains.
Implementation Method 1
a recirculation circuit for transferring liquid from a first region of the washing tub and for re-admitting the liquid into a second region of the washing tub
Data Source
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AI summary
The invention relates to a laundry washing machine (1) comprising an automatic dosing device (70) having at least one container (71) suitable for receiving an amount of wash product (D) sufficient for a plurality of washing cycles and having a recirculation circuit (20) for transferring liquid from a first region (3a) of the washing tub (3) and for re-admitting the liquid into a second region (3b) of the washing tub (3). The automatic dosing device comprises a dispensing line (72) terminating at said recirculation circuit (20) which allows to convey the wash product (D) from the at least one container (71) to the washing tub (3).