Put a top on the funnel so that it's airtight.
Better still... venturi is not needed. Run a circulating loop from sump through the fridge using a small pump.
Inside the fridge, use a (say) 1" diameter PVC pipe with the top section cut out. As the cube melts, food is flushed along the pipe into the return compartment of the sump and up into the display.
Water loop could be powered by small pump and PVC hose from the sump. Use hose adaptors before and after the fridge to convert from small PVC hose to wider PVC pipe and back again.
-droog
Last edited by droog; 05/05/2019 at 08:26 PM.
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