Ice Maker Manual Control Lever to Prevent Unnecessary Ice Production
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Solution Overview
Problem
In refrigerators with ice makers, users lack the ability to manually turn the ice making function on or off without a display or separate switch, leading to inefficiencies in ice production based on ice bucket fullness detection.
Innovation Solution
A refrigerator design featuring an ice making tray, an ice bucket, a full ice detection lever, and a manipulation lever that can be manually operated from outside to interfere with the full ice detection lever, allowing users to manually control the ice making function by rotating a stopper to either enable or disable ice production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the ice maker operates automatically based on full ice detection, then ice production is automated and convenient, but users cannot manually control ice making when no display or switch is available
Solution Approach 1:
The patent introduces a manipulation lever as an intermediary device that allows users to manually control the ice making function. The lever connects to a stopper mechanism inside the ice maker, enabling external manual operation without requiring complex electronic displays or control panels. This mechanical intermediary resolves the contradiction by providing simple manual control while avoiding electronic complexity.
Solution Approach 2:
The manipulation lever system allows users to independently control the ice making function based on their needs without requiring automated detection systems. The lever can be manually positioned to either allow or block the full ice detection lever, giving users direct control over when ice making should occur, thus enabling self-service operation.
2Productivity
If the ice maker continuously produces ice based on automated detection, then ice supply is ensured, but energy is wasted when the ice bucket is already full
Solution Approach 1:
The patent utilizes the full ice detection lever as a feedback mechanism. When the ice bucket is full, the detection lever is pushed and rotates to block the manipulation lever, preventing further ice making. This mechanical feedback system ensures that ice production automatically stops when the bucket is full, eliminating energy waste while maintaining productivity when ice is needed.
Solution Approach 2:
The stopper mechanism prevents the full ice detection lever from rotating to its ice-making position when the bucket is full. By preliminarily blocking the detection lever's movement path, the system prevents unnecessary ice production before it can occur, thereby avoiding energy waste while maintaining ready-to-produce capability when needed.
3Ease of operation
If a display or electronic switch is installed for manual control, then user control is enabled, but device complexity and cost increase
Solution Approach 1:
The patent replaces electronic control systems (displays, switches, sensors) with a purely mechanical manipulation lever system. The lever mechanically connects to the stopper and full ice detection lever through simple mechanical interactions, eliminating the need for electronic components while providing the same manual control functionality. This substitution reduces device complexity and cost while maintaining ease of operation.
Data Source
AI summary
A refrigerator including an ice making tray in which ice is generated, an ice bucket to store ice separated from the ice making tray, a full ice detection lever to rotate toward the ice bucket to detect whether the ice bucket is fully filled with ice, a manipulation lever manipulated outside the ice maker to move between a first position and a second position, and a stopper to rotate in conjunction with the movement of the manipulation lever and interfere with the rotation of the full ice detection lever.