Dispenser assembly for a laundry treatment appliance
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Solution Overview
Problem
Laundry treatment appliances require manual addition of additional cleaning agents like bleach and sanitizing agents, and existing sensors struggle to accurately determine liquid levels in enclosed tanks, making existing systems inconvenient and costly.
Innovation Solution
A dispenser assembly with removable and interchangeable tanks featuring a dosing compartment and a sensor to monitor fluid levels, allowing for automated addition of cleaning agents and ensuring accurate fluid detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are installed in each disposable tank to monitor liquid levels, then measurement precision is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent introduces an intermediary magnetic coupling system between the tank and drawer body. A magnet is embedded in the drawer body, and a magnetic sensor in the tank detects magnetic field strength to determine liquid level. This intermediary magnetic field transmission allows level detection without direct sensor installation in the tank, reducing complexity while maintaining precision.
Solution Approach 2:
The patent replaces direct mechanical sensor installation with a magnetic field-based detection system. Instead of physically mounting sensors in the tank, the system uses magnetic coupling through the drawer body to transmit level information, eliminating the need for complex mechanical sensor integration in disposable tanks.
2Productivity
If manual addition of cleaning agents is required, then device complexity is reduced, but productivity and convenience deteriorate
Solution Approach 1:
The patent implements a self-service system where the dispenser assembly automatically monitors liquid levels in tanks and refills them from the bulk tank without user intervention. The system self-detects when additive levels are low and automatically replenishes them, eliminating manual addition while maintaining operational efficiency.
Solution Approach 2:
The patent incorporates feedback mechanisms where sensors continuously monitor liquid levels in dispensing tanks and communicate this information to the control system. The control system processes this feedback and automatically triggers refilling operations when levels are low, creating a closed-loop system that eliminates manual intervention.
3Ease of operation
If large prefilled tanks are used, then ease of operation is improved, but adaptability deteriorates when additional cleaning agents are needed
Solution Approach 1:
The patent segments the cleaning agent storage into a large bulk tank for main detergent and separate smaller dispensing tanks for additives like bleach and sanitizers. This segmentation allows the system to maintain the convenience of prefilled tanks while enabling flexible addition of different cleaning agents through the removable cartridge system.
Solution Approach 2:
The patent creates a universal dispenser assembly that can handle multiple types of cleaning agents through interchangeable cartridges. The system is designed to accommodate different additive types (bleach, sanitizers, fabric softeners) using the same basic mechanism, providing multi-functionality while maintaining ease of operation.
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
The solution provides convenient, automated addition of cleaning agents and precise fluid level monitoring, enhancing user experience and reducing manual intervention.
Implementation Method 1
a sensor in operable communication with the dosing compartment, the sensor configured to sense a level of fluid within the dosing compartment
Data Source
AI summary
A laundry treatment appliance includes a cabinet forming a receiving space therein; a tub provided within the receiving space; and a dispenser assembly provided within the receiving space, the dispenser assembly being in fluid communication with the tub. The dispenser assembly includes a drawer body insertable to and retractable from the cabinet and provided adjacent to the tub, the drawer body defining at least one receiving compartment; a removable cartridge selectively positioned within the at least one receiving compartment between an inserted position and a removed position; a dosing compartment provided in the drawer body, wherein the dosing compartment is in fluid communication with the removable cartridge when the removable cartridge is in the inserted position; and a sensor in operable communication with the dosing compartment, the sensor configured to sense a level of fluid within the dosing compartment.