Front-Load Washer Salt Reservoir Layout to Prevent Brine Leakage
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Solution Overview
Problem
Current front-loading laundry washing machines with integrated water softening devices face complications due to the placement of the salt reservoir, leading to increased production costs, limited capacity, and potential brine leakage, which can cause detergent dispenser issues and metal drum rusting.
Innovation Solution
A redesigned laundry washing machine with a separate, externally accessible regeneration-agent reservoir positioned beside the detergent dispenser, featuring a water softening device that includes ion-exchange resins and a salt drawer, allowing for efficient water softening and regeneration without compromising the detergent dispenser's structure or causing brine leakage onto the drum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the salt reservoir is integrated on the back of the detergent drawer, then the water softening function is achieved, but the detergent dispenser structure becomes complicated and production cost increases
Solution Approach 1:
The patent separates the salt reservoir from the detergent dispenser, creating two independent components. The salt reservoir is positioned in a dedicated space within the casing, while the detergent dispenser remains a separate drawer unit. This segmentation eliminates the need for integrated structures, simplifying both components and reducing production complexity while maintaining the water softening function.
2Reliability
If the salt reservoir is integrated on the back of the detergent drawer, then the water softening function is achieved, but the salt reservoir capacity is limited
Solution Approach 1:
The patent utilizes vertical space within the casing by positioning the salt reservoir in an upper portion of the casing, above the washing tub. This three-dimensional spatial arrangement allows for a larger salt reservoir capacity without increasing the horizontal footprint or interfering with the detergent dispenser drawer, thereby resolving the capacity limitation.
3Reliability
If the salt reservoir is integrated on the back of the detergent drawer, then the water softening function is achieved, but brine leakage occurs causing detergent dispenser issues and drum rusting
Solution Approach 1:
The patent extracts the salt reservoir from the detergent dispenser assembly and relocates it to a separate position within the casing. This extraction eliminates the direct connection between brine storage and the detergent dispenser, preventing brine leakage from affecting the detergent compartments. The separate positioning also prevents contact with the metal drum, eliminating rusting risks.
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 simplifies the detergent dispenser structure, reduces production costs, enhances salt loading accessibility, and prevents brine from reaching the metal drum, thus avoiding rusting and improving overall machine functionality.
Implementation Method 1
This water softening device uses ion-exchange resins to restrain calcium and magnesium ions (Ca++ an Mg++) dissolved in the tap water channeled to the washing tub
Implementation Method 2
uses brine (i.e. salt water) to periodically regenerate these ion-exchange resins. Salt water, in fact, is able to remove from the ion-exchange resins the calcium and magnesium ions previously combined/fixed to said resins
Data Source
AI summary
A laundry washing machine includes an outer casing provided with a front wall, two side walls, a rear wall and a top wall, a washing tub arranged inside the casing directly facing a laundry loading/unloading opening realized in the front wall of the casing, a rotatable drum arranged in an axially rotating manner inside the washing tub and structured for receiving the laundry to be washed, a detergent dispenser which is housed inside the casing between the washing tub and the top wall of the casing and is structured for feeding into the washing tub a detergent, softener and/or other washing agent mixed with fresh water arriving from the water mains, a water softening device which includes water softening agents for reducing the hardness degree of the fresh water supplied to the washing tub, and a regeneration-agent reservoir which is housed inside the casing and is structured for receiving salt or other regeneration agent for performing a regeneration of the water softening agents. The detergent dispenser is provided with a first inlet which is exposed or exposable to the outside on the front wall of the casing. The regeneration-agent reservoir is housed inside the casing between the detergent dispenser and one of the side walls of the casing, and is provided with an independent second inlet which is exposed or exposable to the outside of the casing.