Modular thermoelectric apparatus for use in multiple portable containers
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Solution Overview
Problem
Existing portable coolers struggle to maintain contents at a consistent cool temperature for an extended period without the need for ice or insulation, and there is a lack of uniformity in cooling performance across different portable coolers and containers.
Innovation Solution
The development of a modular thermoelectric apparatus that can be integrated into portable coolers, utilizing a thermoelectric module, fans, heat sinks, and a housing designed to fit various portable cooler configurations, to actively manage temperature through the transfer of heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If ice is used to cool contents in a portable cooler, then the contents can be kept cool, but the temperature of the contents will rise as the ice melts and requires frequent replacement
Solution Approach 1:
The patent replaces the passive mechanical cooling system (ice) with an active thermoelectric cooling system. The thermoelectric module uses electrical current to directly pump heat from the cold side to the hot side, providing active temperature control without phase change materials. This substitution enables continuous cooling operation as long as power is supplied, eliminating the time loss associated with ice melting and replacement.
Solution Approach 2:
The patent changes the cooling mechanism from thermal conduction through phase change (ice melting) to active heat pumping via thermoelectric effect. By controlling the electrical parameters (current, voltage) supplied to the thermoelectric module, the system can maintain a stable temperature differential across a wide range of ambient conditions, providing extended cooling duration without temperature rise.
2Duration of action of stationary object
If polystyrene foam insulation is added to a portable cooler, then the cooling duration is extended, but the system still cannot maintain consistent temperature without ice
Solution Approach 1:
The patent replaces passive thermal insulation reliance with an active thermoelectric cooling system. While insulation (polystyrene foam) reduces heat ingress, the thermoelectric module actively pumps heat away from the contents, providing reliable temperature consistency independent of insulation quality. This active system ensures consistent cooling performance across different container types and insulation levels.
Solution Approach 2:
The thermoelectric cooling system is self-regulating through the control circuit that monitors temperature and adjusts power delivery to the thermoelectric module. The system automatically maintains the desired temperature setpoint without external intervention, ensuring reliable temperature consistency throughout the cooling duration without requiring ice or perfect insulation.
3Adaptability or versatility
If different portable coolers and containers are used, then various cooling abilities are available, but uniform cooling experience cannot be achieved
Solution Approach 1:
The patent designs a universal thermoelectric cooling apparatus that can be adapted to multiple portable cooler and container types. The modular design with adjustable mounting brackets and flexible air intake/exhaust configurations allows the same cooling system to be installed in various container sizes and shapes. The control circuit automatically adjusts operating parameters to compensate for different thermal characteristics, delivering uniform cooling performance across diverse applications.
Solution Approach 2:
The patent incorporates dynamic adjustment capabilities in the thermoelectric cooling system. The mounting structure can be dynamically adjusted to fit different container geometries, and the control circuit dynamically adjusts power delivery based on real-time temperature feedback. This dynamic adaptation ensures reliable and uniform cooling performance whether the system is installed in a small lunch box or a large cooler, eliminating the variability caused by using different portable coolers.
4Temperature
If a thermoelectric module is used for active cooling, then temperature control is improved, but the device complexity increases with fans, heat sinks, and housing
Solution Approach 1:
The patent merges the thermoelectric module, fans, heat sinks, and housing into an integrated cooling assembly. The housing serves multiple functions: structural support, thermal insulation, and air flow channeling. The fans are mounted directly to the heat sinks, and the entire assembly is designed as a single replaceable unit that can be installed in various portable coolers. This merging reduces the number of separate components and simplifies installation while maintaining effective temperature control.
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 solution enables efficient and uniform cooling of contents within portable coolers, maintaining a temperature difference of about 36°F compared to ambient air, and can maintain food-safe temperatures without the need for ice or insulation.
Implementation Method 1
a thermoelectric module disposed within the housing
Implementation Method 2
The lower fan can pull or divert warm air through the warm air inlet toward a cold side of the thermoelectric module
Implementation Method 3
The upper fan can push hot air away from the hot side of the thermoelectric module through the hot air outlet
Implementation Method 4
The modular thermoelectric apparatus further includes a thermal insulator defining an opening
Data Source
AI summary
A thermoelectric module that is removable from a lid of a thermoelectric portable cooler. The modular thermoelectric apparatus includes a housing and a thermoelectric module disposed within the housing. The housing is coupled to a lower fan shroud with a warm air inlet and a cold air outlet. The housing is adapted to be removably coupled to a lid or a sidewall of a portable cooler.