We have long used fridges for cooling food items. Fridges use a compressor based cooling system that are bulky and costly and thus we cannot create small fridges for limited cooling needs.
Well hereby we make use of Thermoelectric cooler (peltier) based cooling to create a mini fridge that can cool cans as well as small food packets and items. The system makes use of 2 peltier modules with a thermal insulation frame and electronics circuitry to develop the system.
Peltiers allow for instant cooling using electricity at lower costs. Thermoelectric coolers operate according to the Peltier effect. The effect creates a temperature difference by transferring heat between two electrical junctions. A voltage is applied across joined conductors to create an electric current. When the current flows through the junctions of the two conductors, heat is removed at one junction and cooling occurs. Heat is deposited at the other junction.
So here we propose a mini can cooler fridge that can cool cold drink cans easily. Our system uses peltier, along with heat sink, power supply and insulation with outer frame to achieve this system. We develop a customized casing to ensure we get peltier cooling on the inside while the heatsink and fan can throw the generated heat outside. We use insulation to achieve as much thermal insulation as possible.
We first make use of a electronics system with an LCD display and 4 x 1 keypad to allow user to interact with the system. The user can enter the min and max temperature of the fridge. The fridge will now operate the peltiers to ensure temperature is maintained between set temperatures.
The system uses 2 peltiers powered by a dc supply. The cooling end of peltiers is connected to inner metal frame to pass on cooling to the contents of fridge. The heating end of the peltier is connected to a heatsink using thermal paste to pass on the heat into environment using cooling fan.
- Cooling Fan
- Thermal Paste
- LCD Display
- Electronics Components
- Wires and Connectors
- PCB Board
- Thermal Isolator
- Metal Frame
- Supporting Frame
- Power Supply
- Screws & Joints