Important Considerations When Building a DIY CR Box

2023-12-14 15:13:10

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“ DIY CR Box performance depends on filter efficiency, fan pressure, blade count, filter dimensions, frame material, and the fan's built-in speed settings. ”

1. Do not increase the filter efficiency grade. This is not merely a matter of cost: the structure and fan of a CR Box mean that it can use only a low-efficiency filter. Using a higher grade will cause airflow to fall sharply, eliminating the advantage of high airflow. An air purifier recirculates indoor air, so slightly lower filter efficiency is not a major problem; if one pass is insufficient, the air can be filtered a second time. If you want higher efficiency, you will need to use a different structure.

2. Whenever possible, buy a fan with a metal impeller, because a metal-impeller fan can provide greater static pressure.

3. Whenever possible, buy a fan with more blades, such as a six-blade model. This type of fan can deliver more airflow while producing less noise.

4. You can purchase filters measuring 492 x 595 x 46 or 595 x 595 x 46. Both are standard industrial-filter sizes, so they are less expensive and easier to obtain. A cardboard frame is sufficient; there is no need to waste money on an aluminum frame. After all, the spirit of DIY is to avoid spending a cent unnecessarily, isn't it?

5. There is no need to purchase a separate speed controller. Simply use the fan's available speed settings, because an adjustable external speed controller will generally cause the motor to produce electromagnetic noise.

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