Ice Maker Heater Timing Control to Prevent Melting Water Accumulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ice makers in refrigerators face challenges in determining optimal ice separation times, leading to excessive melting, opaque or non-smooth ice surfaces, and the formation of ice cubes mats due to differing ice separation times across cells and melting water accumulation.
Innovation Solution
A method for controlling the ice maker that involves turning on the ice separation heater after ice making is complete, moving the second tray to a standby position, and determining the optimal time for ice separation based on temperature and turn-on time conditions, with additional heating to ensure uniform ice separation and prevent melting water accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ice separation heater is turned on to separate ice from the tray, then ice separation is achieved, but excessive melting occurs causing opaque or non-smooth ice surfaces and melting water accumulation
Solution Approach 1:
The ice separation heater is turned on before the ice making is completely finished, at a predetermined time point during the ice making process. This preliminary heating action prevents excessive melting by preparing the ice-tray interface for separation before the ice is fully formed, allowing controlled separation without damaging the ice surface or creating water accumulation.
2Manufacturing precision
If ice separation is performed at different time points for different cells, then each cell can be optimized, but the ice maker complexity increases and uniformity is lost
Solution Approach 1:
Multiple ice making cells that would otherwise require individual separation timing control are merged into a unified control system. The controller manages all cells simultaneously with a single control logic, turning on the heater at a predetermined time that works for all cells, thereby achieving uniform separation without increasing control system complexity.
3Reliability
If the heater operates for a longer time to ensure complete ice separation, then separation reliability improves, but energy consumption increases and melting water accumulates
Solution Approach 1:
The controller monitors the ice making process and uses feedback from temperature sensors and process timing to determine the optimal moment to turn on and off the ice separation heater. This feedback-based control ensures the heater operates only for the necessary duration to achieve complete separation, preventing both insufficient separation and excessive energy consumption or water accumulation.
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
This approach ensures reliable ice separation, prevents excessive melting, and maintains the transparency and smoothness of ice cubes by synchronizing ice separation across all cells, thereby avoiding the formation of ice cubes mats in the ice bin.
Implementation Method 1
turning on the heater for ice separation
Implementation Method 2
excessive melting is made by the heat of the ice separation heater
Data Source
AI summary
A method for controlling a refrigerator of the present invention includes turning on the heater when ice making is completed; moving the second tray to a standby position in a forward direction when the movement condition of the second tray is satisfied; turning off the heater when a turn-off condition of the heater is satisfied after the second tray moves to the standby position in the forward direction; determining whether the heater is turned off and a predetermined time has elapsed; and moving the second tray to the ice separation position in the forward direction when it is determined that the predetermined time has elapsed.