Ice Maker Compartment Temperature Control to Prevent Condensation
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Solution Overview
Problem
In domestic refrigeration appliances with an ice maker, poor insulation between the refrigerator and ice maker compartments leads to condensation issues in humid and warm environments, which can result in water dripping onto stored goods, and existing solutions require varying insulation thicknesses based on climate, increasing production and logistics costs.
Innovation Solution
A regulation unit that switches between normal and reduced-power ice making modes by adjusting the target temperature of the ice maker compartment, maintaining a temperature above the dew point to prevent condensation, even with a minimal inner insulation layer, and using sensors to detect environmental and operational conditions to trigger the mode change.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If the inner insulation layer thickness is reduced to minimize space requirements, then the volume of the refrigerator compartment is maximized, but condensation occurs on the insulation layer surface in humid and warm environments
Solution Approach 1:
The patent applies dynamics by making the target temperature of the ice maker compartment adjustable between two operating modes. In reduced-power mode, the target temperature is raised to prevent condensation on the insulation layer, while in normal mode, it operates at lower temperatures for optimal ice making. This dynamic temperature adjustment allows the system to adapt to different environmental conditions and operational requirements, resolving the contradiction between space optimization and condensation prevention.
Solution Approach 2:
The patent changes the temperature parameter of the ice maker compartment dynamically. By adjusting the target temperature between a first value (normal mode) and a second, higher value (reduced-power mode), the system modifies the thermal gradient across the insulation layer. This parameter change prevents the insulation layer surface temperature from dropping below the dew point in humid conditions, thereby preventing condensation while maintaining a thin insulation layer for space efficiency.
2Object-affected harmful factors
If a stronger inner insulation layer is used to prevent condensation in humid and warm climates, then condensation is avoided, but the space requirement and production costs increase
Solution Approach 1:
Instead of using a permanently thicker insulation layer, the patent employs a thin insulation layer combined with dynamic temperature control. The regulation unit adjusts the ice maker compartment target temperature based on operational mode, creating a higher temperature gradient in reduced-power mode that prevents condensation on the thin insulation layer. This dynamic approach achieves condensation prevention without the permanent space and cost penalty of a thicker insulation layer.
Solution Approach 2:
The patent changes the operating temperature parameter of the ice maker compartment to compensate for the thin insulation layer. By raising the target temperature in reduced-power mode, the thermal gradient across the insulation layer increases, keeping the outer surface temperature above the dew point and preventing condensation. This parameter adjustment allows the use of minimal insulation thickness while maintaining condensation prevention capability.
3Object-affected harmful factors
If the target temperature of the ice maker compartment is raised to prevent condensation, then condensation is avoided, but ice making efficiency is reduced
Solution Approach 1:
The patent implements two distinct operating modes with different target temperatures for the ice maker compartment. In normal mode, the lower target temperature ensures efficient ice making. In reduced-power mode, the target temperature is raised to prevent condensation when environmental conditions are favorable or ice production demand is low. This dynamic mode switching allows the system to optimize between ice making efficiency and condensation prevention based on real-time requirements.
Solution Approach 2:
The regulation unit periodically assesses operational conditions and switches between normal and reduced-power modes accordingly. This periodic evaluation and mode switching allows the system to alternate between high-efficiency ice making (when condensation risk is low) and condensation prevention (when environmental conditions require it), thereby balancing productivity with harmful factor prevention over time.
4Object-affected harmful factors
If refrigeration appliances are equipped with climate-specific insulation configurations, then condensation is prevented in specific environments, but production complexity and logistics costs increase
Solution Approach 1:
The patent makes a single refrigeration appliance design universal for all climate conditions through dynamic temperature control. Instead of producing different insulation configurations for different climates, the system uses a standardized thin insulation layer combined with a regulation unit that adjusts the ice maker compartment target temperature based on operational mode. This multi-functional approach allows the same appliance design to operate effectively in both humid/warm and cool/dry environments, eliminating the need for climate-specific production variants and simplifying both manufacturing and logistics.
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
Prevents condensation on the inner insulation layer in humid and warm surroundings without increasing the insulation thickness, optimizing energy use based on environmental conditions and storage needs, thereby ensuring dry storage and efficient operation.
Implementation Method 1
an ice maker compartment, which is separated from the refrigerator compartment by an inner insulation layer
Implementation Method 2
By scaling up the target temperature of the ice maker compartment in the reduced-power ice making mode, the temperature gradient in the inner insulation layer is reduced, so that the surface of the inner insulation layer facing the refrigerator compartment can achieve a temperature above the dew point
Data Source
AI summary
A domestic refrigeration appliance includes a refrigerator compartment set to a first target temperature by a regulation or control unit, an ice maker compartment being separated from the refrigerator compartment by an inner insulation layer and set to a second target temperature by the regulation or control unit and an ice maker in the ice maker compartment. The regulation or control unit can switch between a normal ice making mode and a reduced-power ice making mode in which the target temperature in the ice maker compartment lies between the target temperature in the refrigerator compartment and the target temperature in the ice maker compartment in the normal ice making mode.