Mini freezer-equipped drone for transporting biological materials and method of using same
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Solution Overview
Problem
Current drone systems are unable to maintain ultra-cold temperatures required for transporting vaccines and other perishable medical supplies, particularly in remote areas lacking cold chain facilities, as they rely on passive cooling methods that are insufficient for achieving sub-zero temperatures.
Innovation Solution
A mini freezer-equipped drone with active temperature control using thermoelectric devices and passive cooling mechanisms, combined with aerodynamic features during flight, to maintain temperatures as low as -20°C, enabling efficient transport and storage of temperature-sensitive materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If passive cooling methods (ice packs, phase change materials, dry ice) are used in conventional drones, then the drone can transport temperature-sensitive payloads, but the drone cannot achieve ultra-cold temperatures below -20°C required for certain vaccines
Solution Approach 1:
The patent transitions from passive cooling (fixed temperature) to active cooling with thermoelectric devices that can dynamically adjust and maintain precise sub-zero temperatures. The system changes the operating parameters from static ice packs to controllable Peltier devices with feedback control, enabling reliable maintenance of temperatures below -20°C required for ultra-cold vaccine storage.
Solution Approach 2:
The patent implements temperature feedback control using temperature sensors that continuously monitor the payload compartment and adjust the thermoelectric cooling devices accordingly. This closed-loop feedback system ensures reliable temperature maintenance by detecting deviations and correcting them in real-time, solving the reliability issue of conventional passive cooling methods.
2Temperature
If active cooling mechanisms (thermoelectric devices) are added to achieve ultra-cold temperatures, then sub-zero temperatures can be reached, but the device complexity and power consumption increase
Solution Approach 1:
The patent integrates the thermoelectric cooling devices into the existing drone structure, making the cooling system multi-functional by combining payload storage, cooling, and temperature monitoring in a single integrated unit. The drone's power system and control system are leveraged to support the cooling function, reducing overall system complexity despite adding active cooling capability.
Solution Approach 2:
The patent uses thermoelectric devices as an intermediary between the drone's power system and the payload, providing a compact solid-state cooling solution that eliminates the need for mechanical refrigeration systems. This intermediary approach simplifies the cooling system by using electronic control rather than mechanical components, reducing overall device complexity.
3Adaptability or versatility
If conventional drones are used for last-mile vaccine delivery, then delivery can reach remote areas, but the high costs of labor and cold chain infrastructure prevent widespread distribution
Solution Approach 1:
The patent makes the drone system self-sufficient by integrating all cooling and temperature control functions into the drone itself, eliminating the need for external cold chain infrastructure at delivery locations. The drone carries its own power source, cooling devices, and temperature monitoring systems, enabling independent operation in remote areas without expensive infrastructure development.
Solution Approach 2:
The patent employs disposable or replaceable ice packs and phase change materials as backup cooling sources, which are inexpensive to manufacture and replace. This approach reduces the overall cost of the cooling system by using cheap consumable items alongside the active cooling devices, making the overall system more economically viable for widespread deployment.
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
The mini freezer-equipped drone effectively maintains sub-zero temperatures during transport, ensuring the integrity of vaccines and other perishables, thereby overcoming the limitations of existing drone systems in achieving ultra-cold temperatures.
Implementation Method 1
active temperature control through a thermoelectric device
Implementation Method 2
passively cool down to −20° C. using ice packs, preconditioned ice, phase change materials, and/or dry ice
Implementation Method 3
phase change materials
Implementation Method 4
active temperature feedback from a temperature measurement device
Data Source
AI summary
According to some embodiments, a freezer-equipped drone for transporting biological materials and method of using same is provided. In some embodiments, a freezer-equipped drone comprises a temperature control device for transporting biological materials, such as, but not limited to, vaccines, blood samples, urine samples, saliva samples, nasal samples, bodily fluids, tissue samples, and the like. For example, a freezer-equipped drone can comprise a drone equipped with a mini freezer for holding biological materials that may be activated to some desired temperature using active cooling mechanisms at the same time of aerial transport.