Icemaker Compartment Air Circulation for Uniform Freezing
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Solution Overview
Problem
The inefficiency of air ducts in distributing cold air within the icemaker compartment of refrigerators leads to uneven temperature distribution, affecting ice production efficiency and accuracy.
Innovation Solution
A method involving a fan, heater, and coolant pump is implemented, where the fan is activated after a predetermined time after water filling in the ice cavities and synchronized with the coolant pump's operation to enhance air circulation and temperature control within the icemaker compartment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air ducts are used to distribute cold air from the freezer compartment to the icemaker compartment, then the icemaker compartment can be maintained at freezing temperature, but the air pressure and flow are reduced leading to uneven temperature distribution
Solution Approach 1:
The patent removes the air duct component entirely and replaces it with a fan positioned inside the icemaker compartment. This extraction of the problematic ductwork eliminates the source of pressure loss and flow reduction, allowing direct air circulation without the intermediary duct structure that caused uneven temperature distribution.
Solution Approach 2:
The patent transitions from a duct-based one-dimensional air delivery system to a fan-based three-dimensional air circulation system. The fan creates multi-directional airflow patterns within the compartment, enabling air to reach all areas including corners and the ice storage bin, thereby achieving uniform temperature distribution through spatial dimensionality.
2Manufacturing precision
If the fan operates continuously regardless of ice making stage or compressor status, then air circulation is maintained, but energy is wasted and ice production accuracy decreases due to uneven temperature
Solution Approach 1:
The patent implements periodic fan operation synchronized with the ice making cycle stages and compressor status. The fan operates intermittently rather than continuously, activating during specific phases of ice formation and deactivating during other phases, thereby reducing unnecessary energy consumption while maintaining precise temperature control when needed.
Solution Approach 2:
The patent employs feedback control where the fan operation is regulated based on temperature sensor readings and ice making stage detection. The system continuously monitors compartment temperature and adjusts fan operation accordingly, increasing fan activity when temperature deviations occur and reducing activity when temperature is stable, thus improving ice formation accuracy while optimizing energy use.
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 method improves air circulation efficiency, ensuring more uniform temperature distribution, faster ice production, and reduced melting or over-freezing issues, enhancing the overall operation of the icemaker compartment.
Implementation Method 1
A method and apparatus for circulating air within an icemaker compartment of a refrigerator
Implementation Method 2
a coolant pump for controlling the delivery of coolant to the icemaker compartment
Implementation Method 3
a heater, and an icemaker having an ice mold body
Data Source
AI summary
A method and apparatus for circulating air within an icemaker compartment of a refrigerator are disclosed. The method includes the steps of activating the icemaker, filling the ice cavities with water, and activating the fan after a predetermined time after the ice cavities are filled with water. The apparatus includes a food storage compartment, an access door operable to selectively close the food storage compartment, an icemaker compartment on the access door, an icemaker disposed in the icemaker compartment, the icemaker including an ice mold body defining a plurality of ice cavities, an ice storage bin disposed in the icemaker compartment, a fan for distributing cold air within the icemaker compartment, at least one heating element attached to the ice mold body, a coolant pump, and a controller for regulating the fan and the coolant pump.