Refrigerator appliance with timed preheating for dispensed fluids
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Solution Overview
Problem
Refrigerator appliances lack the ability to efficiently dispense hot water or heated beverages at desired temperatures without connecting to a residential hot water heater, and existing solutions often require waiting periods for heating and may result in spills if a container is not present.
Innovation Solution
A refrigerator appliance with a heating element and controller that heats water to a desired temperature and initiates dispensing only when a container is detected, ensuring the heated fluid is directed correctly and preventing spills.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heating element is used to provide heated water at the dispenser, then hot water or heated beverages can be dispensed, but several minutes are required before the water heating element can heat the water to the temperature desired by the user
Solution Approach 1:
The system performs preliminary actions by detecting the container's presence and pre-heating the water in advance before the user actually requests dispensing. The controller initiates heating operations based on predicted user needs, so that when the user activates the dispenser, the water is already heated and ready for immediate dispensing, eliminating the waiting period.
Solution Approach 2:
The system dynamically adjusts the heating operation based on real-time container detection. When a container is detected in the dispenser recess, the controller activates the heating element to heat water to the desired temperature. This dynamic response allows the system to optimize heating timing and duration based on actual dispensing needs, reducing unnecessary heating time.
2Productivity
If a timer is used to activate heating elements or begin a brewing process at a preset time, then hot beverages can be prepared in advance, but dispensed liquid may spill onto the floor or surrounding environment if a user forgets to provide a container in advance of the preset time
Solution Approach 1:
The system continuously monitors the dispenser recess for the presence of a container using a sensor. This feedback mechanism allows the controller to adjust the dispensing operation in real-time - if no container is detected, the system prevents or delays dispensing, thereby avoiding spills. The feedback loop ensures reliable operation by coordinating heating and dispensing actions with actual container presence.
Solution Approach 2:
The system performs preliminary container detection before initiating heating or dispensing operations. By checking for container presence in advance and continuously monitoring during the process, the system ensures that hot water is only dispensed when a container is properly positioned, preventing spills and improving overall dispensing reliability.
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 allows for rapid dispensing of hot water at desired temperatures without a residential hot water heater connection, ensuring convenience and preventing spills by detecting the presence of a container before initiating the heating and dispensing process.
Implementation Method 1
a heating element can be used to provide heated water at the dispenser
Data Source
AI summary
A refrigerator appliance, as provided herein, may include a cabinet, a door, a dispensing assembly, a heating element, and a controller. The controller may be configured to initiate a dispensing operation. The dispensing operation may include providing a first time, TIME-1, by which a fluid is to be ready at a first temperature, TEMP-1, within the cabinet; ascertaining a first time period, Δt1, required to heat the fluid to at least the first temperature, TEMP-1; initiating detection of a container within a dispenser recess prior to the first time, TIME-1; and directing a heating element prior to the first time, TIME-1, based on initiating detection of the container.