DIY Water Chiller

Project Overview

This project details the construction of a DIY water chiller, offering a cost-effective alternative to expensive commercial units, particularly for applications like laser cutters. The guide emphasizes ease of manufacturing and repurposing common components.

Motivation and Cost

The creator sought an affordable cooling solution, noting that commercial options often exceed $400. By converting an ice maker, the project aims to achieve similar functionality for approximately $144, utilizing readily available parts.

Key Components and Tools

Supplies:

• Ice-maker (modified)
• Icebox/cooler
• Temperature regulator
• Aquarium pumps (x2)
• 12V power supply

Tools:

• Heat shrink solder
• Hot air blower
• Wire stripper
• Hole saw / hand saw / Jigsaw
• Phillips head screwdriver
• Mounting screws

Build Process Highlights

The guide walks through several key stages:

• Teardown: Safely disassembling an ice maker, identifying critical components like the condenser and evaporator, and removing unnecessary electronics.
• Wiring: Connecting the compressor and condenser fan, often using solder heat shrink for secure and waterproof connections.
• Assembly: Bending refrigerant lines to fit into an icebox, creating necessary openings in the icebox lid, and mounting the refrigeration unit.
• Integration: Installing aquarium pumps for water circulation and cooling fluid delivery, and connecting an external temperature regulator to control the system.

Conclusion and Improvements

The completed DIY water chiller provides a functional and reliable cooling system. Potential improvements include adding a protective case, integrating a larger heatsink, and optimizing component placement for a more compact unit. The project demonstrates an understanding of refrigeration principles and offers a practical solution for makers.