Additive dispenser for varying the types of additives within a washing machine appliance
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Solution Overview
Problem
Existing washing machine additive dispensers face challenges in ensuring complete dissolution of additive pods, especially during cold-water cycles, leading to potential damage or staining of articles and wastefulness due to undissolved remnants.
Innovation Solution
A washing machine appliance with a fluid additive dispenser featuring a housing and dispenser drawer that includes a primary compartment, a pod compartment, and a pod outlet, where the pod compartment has internal walls to facilitate the dissolution of additive pods, and an optical sensor to monitor pod status, ensuring optimal water flow and temperature for complete dissolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If additive pods are used in cold-water wash cycles, then ease of operation is improved, but complete dissolution of the pods cannot be ensured, leading to harmful effects
Solution Approach 1:
The system performs preliminary actions by detecting the presence of additive pods before the wash cycle begins and pre-heating water specifically for pod dissolution. The water heater activates during the soak cycle to warm water in the pod dissolution chamber, creating optimal conditions for complete pod dissolution before the main wash begins.
Solution Approach 2:
A dedicated pod dissolution chamber serves as an intermediary space between the additive pod storage and the main wash tub. This intermediate chamber allows pods to be pre-dissolved in controlled conditions (with heated water and extended soak time) before the solution is transferred to the main tub, ensuring complete dissolution without affecting the main wash cycle.
2Adaptability or versatility
If multiple types of additive pods are used, then adaptability is improved, but device complexity increases
Solution Approach 1:
The additive dispenser is designed with universal functionality to accommodate multiple types of additive pods (detergent, fabric softener, bleach, etc.) through a single standardized pod compartment. The system uses a universal detection mechanism that identifies any pod type present and automatically adjusts water temperature, flow rate, and dissolution timing accordingly, eliminating the need for separate dispensing mechanisms for each additive type.
Solution Approach 2:
The system dynamically changes operational parameters (water temperature, water flow rate, dissolution time) based on the detected additive pod type. The controller adjusts these parameters in real-time to optimize dissolution conditions for each specific additive type, allowing versatile pod compatibility without requiring complex mechanical differentiation mechanisms.
3Ease of operation
If additive pods are deposited directly into the wash basket, then ease of operation is improved, but loss of substance increases due to undissolved remnants
Solution Approach 1:
The system replaces manual pod placement into the wash basket with an automated pod dissolution and dispensing mechanism. Water is automatically directed into the pod compartment, the pod dissolves completely under controlled conditions, and the resulting solution is automatically dispensed into the wash tub, eliminating the need for users to manually handle and place pods while ensuring complete additive dissolution.
Solution Approach 2:
The additive dispenser performs self-service by automatically detecting the presence of additive pods, activating the water heater and pump to dissolve the pods, and then automatically dispensing the dissolved additives into the wash tub. This self-automated process eliminates user intervention while ensuring complete pod dissolution and preventing waste from undissolved remnants.
4Reliability
If water flow and temperature are optimized for pod dissolution, then dissolution completeness is improved, but use of energy increases
Solution Approach 1:
The system applies partial heating action by heating water only in the pod dissolution chamber during the soak cycle, rather than heating the entire tub. The water heater activates selectively to warm only the portion of water that will contact the additive pods, providing sufficient heat for complete dissolution while minimizing overall energy consumption. The heated water is then used to dissolve pods before being mixed with the larger volume of cooler water in the main tub.
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 ensures complete dissolution of additive pods, preventing damage and wastage, and allowing for the use of multiple types of pods, enhancing the efficiency and effectiveness of the washing process.
Implementation Method 1
an optical sensor to monitor pod status
Implementation Method 2
ensuring complete dissolution of additive pods
Data Source
AI summary
A washing machine appliance, as provided herein, may include a cabinet, a tub, a basket, and a fluid additive dispenser. The fluid additive dispenser may include a housing and a dispenser drawer. The housing may extend between an open front end and a closed rear end. The housing may be disposed within the cabinet. The dispenser drawer may be selectively received in the housing above the basket. The dispenser drawer may extend from a forward end proximate to the rotation axis to a rearward end distal to the rotation axis. The dispenser drawer may define a primary compartment and a pod compartment adjacent to the primary compartment between the forward end and the rearward end. The dispenser drawer may further define a pod outlet extending through a wall of the pod compartment to direct a wash fluid therefrom.