Refrigerator with variable fluid dispenser
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Solution Overview
Problem
Existing refrigerator ice and fluid dispensers are not intuitive for users, leading to frustration in configuring and actuating the dispensing modes.
Innovation Solution
Implementing a variable control mechanism, such as a rotary knob or slider, to adjust the dispensing rate of ice and fluid, combined with a bias mechanism to return to a default position, and integrated with additional controls like switches and sensors for seamless operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple dedicated buttons and switches are provided for selecting dispensing modes, then the dispenser can offer various ice and fluid dispensing options, but the configuration and actuation becomes non-intuitive and complex for users
Solution Approach 1:
The patent applies a single rotary dial control that can perform multiple functions: selecting different dispensing modes (ice, water, etc.), adjusting dispensing rates, and controlling dispensing duration. This multi-functional control replaces multiple dedicated buttons and switches, making the interface more intuitive while maintaining versatile dispensing capabilities
Solution Approach 2:
The patent merges multiple separate controls (mode selection buttons, rate adjustment switches, duration controls) into a single integrated rotary dial mechanism. This consolidation simplifies the user interface by combining what were previously separate configuration steps into one unified control action
2Ease of operation
If a single control mechanism is used for dispensing control, then the operation becomes simpler and more intuitive, but the ability to provide multiple dispensing modes and variable rates is limited
Solution Approach 1:
The rotary dial control is designed to be dynamic in its functionality: rotating the dial to different angular positions selects different dispensing modes and rates, while the degree of rotation determines the dispensing rate. This dynamic control mechanism allows a single static component to provide multiple variable functions
Solution Approach 2:
The patent uses parameter changes to enable a single control to provide multiple functions: the angular position of the rotary dial changes the dispensing mode parameter, while the rotation degree changes the dispensing rate parameter. This allows one control mechanism to adjust multiple parameters simultaneously
3Measurement precision
If flow sensors and automated shut-off are implemented, then precise fluid measurement and control are achieved, but the device complexity increases
Solution Approach 1:
The patent implements automated dispensing control where the system self-regulates the dispensing process based on user selections. The control system automatically manages dispensing duration and shut-off based on the selected mode and rate, eliminating the need for manual timing or intervention while maintaining precise control
Data Source
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AI summary
A variable fluid dispenser (24) for a refrigerator (10) utilizes a variable control (28,128) suitable for varying the rate of fluid dispensing by the dispenser (24). In some instances, the variable control (150) may include a rotary control actuator (152) that varies the fluid dispensing rate of the variable dispenser, and in some instances, the variable control (28,128) may include a variable control actuator (130) movable between a range of positions that includes a home position at which the variable dispenser (24) is deactivated. In such instances, movement of the variable control actuator (130) away from the home position both activates the variable dispenser (24) to dispense fluid and increases the fluid dispensing rate of the variable dispenser (24).