Rapid Countertop Food Cooler Design

I’m working on a countertop appliance that does for cooling what a microwave does for heating: it must take a pot-hot, family-size portion of food and drop its temperature to safe refrigeration levels in just a few minutes. To keep parts affordable and serviceable I want to stick with conventional refrigeration technology—compressor, evaporator, condenser—rather than cryogenic or thermoelectric methods.

Here’s what I need from you:

• A complete concept-to-prototype package for a family-size countertop unit, including thermal load calculations that show how we can pull heat quickly enough to meet food-safety guidelines (from roughly 90 °C down to ≤4 °C in under 10 minutes).
• A refrigeration circuit diagram specifying compressor capacity, refrigerant type, expansion control, coil geometry, and insulation requirements.
• Mechanical drawings that integrate the cooling chamber, airflow paths, and any rapid-chill features such as forced convection or stirred bath designs.
• A bill of materials with part numbers that are readily available worldwide.
• Control logic: temperature sensors, user interface outline, and safety interlocks.
• Assembly guidance and testing protocol so I can build a functional prototype and verify performance.

Feel free to suggest smart ideas—phase-change plates, heat exchangers, or staged cooling loops—as long as they stay within the conventional refrigeration umbrella. If you have experience designing small refrigeration appliances or blast chillers, your insight will be invaluable.