My latest incubator project. I took an old beverage cooler, removed the compressor and repurposed the condenser with the circulation fan routing air through it. The condenser will help normalize the humidified/oxygenated air prior to being pumped into the egg boxes.
My previous design relied solely on the water it was pumped through to humidify and normalize temperature of the air. As a result if the water level of the humidifier containers got outside a certain range the temp and humidity of air pumped into the egg boxes could change. Due to this water had to be added to the containers weekly. Another issue was the containers would get gross and need to be cleaned.
The new design pumps air via a fish tank air pump just like the old one however rather than go directly into the water, it is pumped through the condenser first which normalizes the temperature of the fresh oxygenated air then it goes through the air stones in the water. I also moved away from a container and switched to jugs that I simply replace with new ones as the old ones get empty. The only thing that gets reused is the cap.
Once the air goes through the condenser then the humidifier it gets pumped into the egg boxes. I control humidity with vent holes on the egg boxes and a second air pump located inside the incubator. I just balance flow between humidified air and ambient (inside the incubator) to get the exact % humidity I want in each egg box.
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