Washing Machine Additive Dispensing Assembly for Low Water Pressure
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Solution Overview
Problem
Existing washing machine additive dispensers often fail to deliver consistent additive volumes, particularly in regions with low water pressure, leading to inadequate detergent concentration during wash cycles.
Innovation Solution
The proposed solution includes an additive dispensing assembly with a water supply conduit, a booster pump, and a siphon channel or solenoid valve system that ensures consistent delivery of wash additives by creating a negative pressure in the additive supply conduit, allowing for proper mixing with water regardless of water pressure levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If an aspirator-based additive dispenser is used, then the system can be simple in structure, but it fails to deliver consistent additive volumes under low water pressure conditions
Solution Approach 1:
A siphon channel is introduced as an intermediary mechanism between the water supply and additive reservoir. The siphon channel creates a vacuum effect that actively draws additives from the reservoir, ensuring consistent delivery independent of water pressure variations. This intermediary siphon mechanism resolves the contradiction by maintaining reliability without significantly increasing overall system complexity.
Solution Approach 2:
The invention utilizes hydraulic principles through the siphon channel to create a vacuum-driven additive delivery system. The siphon effect harnesses water flow to generate negative pressure that consistently pulls additives through the dispensing system, ensuring reliable operation across varying water pressure conditions while maintaining structural simplicity.
2Productivity
If water pressure is increased to force additive from the dispenser, then additive delivery improves, but the system becomes unable to operate in regions with low water pressure
Solution Approach 1:
Instead of using positive water pressure to force additives out, the invention inverts the approach by using a siphon channel to create negative pressure (vacuum) that draws additives out. This inversion allows the system to operate effectively in low water pressure regions by harnessing the water flow's natural siphon effect rather than relying on high pressure.
Solution Approach 2:
The siphon channel mechanism changes the pressure parameter dynamics in the additive supply conduit, creating a vacuum environment that maintains consistent additive flow rates regardless of external water pressure variations. This parameter transformation enables the system to adapt to different water pressure conditions while maintaining productivity.
3Manufacturing precision
If users manually measure and add additives, then proper concentrations can be achieved, but the process becomes time-consuming and complex
Solution Approach 1:
The siphon-based dispensing system is self-regulating and automatically delivers the correct amount of additives based on water flow characteristics. Users simply need to load the additive reservoir, and the system handles the precise measurement and dispensing automatically, combining concentration accuracy with operational simplicity.
Solution Approach 2:
The siphon channel creates a natural feedback mechanism where the water flow rate automatically regulates additive delivery. As water flows through the siphon, it continuously draws additives at a rate proportional to the water flow, ensuring proper concentrations are maintained without requiring user intervention or complex control systems.
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 ensures reliable and consistent delivery of wash additives across varying water pressures, maintaining optimal detergent concentrations during wash cycles, even in areas with low water pressure.
Implementation Method 1
a siphon channel may extend from the additive dispenser to the water supply conduit downstream from the booster pump. Moreover, a flow of water directed through the water supply conduit may create a siphon that draws the wash additive into the water supply conduit
Implementation Method 2
The booster pump may be positioned along the water supply conduit downstream from the water supply
Implementation Method 3
The solenoid valve may be positioned along to the water supply conduit and configured to selectively provide a flow of water to the wash tub
Data Source
AI summary
A washing machine appliance and additive dispensing assembly are provided herein. The washing machine appliance may include a cabinet, a wash tub, a wash basket, and an additive dispensing assembly. The additive dispensing assembly may be positioned within the cabinet and configured to provide wash fluid to the wash tub. The additive dispensing assembly may include a water supply conduit, a booster pump, an additive dispenser, and a siphon channel. The water supply conduit may extend between a water supply and the wash tub. The booster pump may be positioned along the water supply conduit downstream from the water supply. The siphon channel may extend from the additive dispenser to the water supply conduit downstream from the booster pump.