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Video 1. Drying Effect after Using New Nozzles

Figure 1. Final On-Field Test Result

Left is the original drying effect. Right is the drying effect after using the integrated nozzle.

The drying effect of the back mirror is improved.

Figure 2. Schematic of Attaching the Integrated Nozzle to the Original Mammoth Blower Trunk

The integrated nozzle will be attached to the Mammoth trunk by using Zip-tie.

Figure 3. Molds for Manufacturing the Integrated Nozzle

The molds are made by Aluminum, which can resist high temperature and proof rust.

The manufacturing of the mold is completed by the local company.

Figure 4. Final Design: Integrated Nozzle

After the adjustable nozzle is proved to be effective in improving drying, the integrated nozzle with bending angle of 160 degree as the final design.

The integrated nozzle will be manufactured by injection molding with vulcanized rubber.

The integrated nozzle will be more durable for a long-time use.

Figure 5. In-home and On-field test setup for testing Adjustable nozzle

An electronic leaf blower is used to simulate the sir flow of the carwash blower for the in-home test.

In the on-field test, several combinations of adjustable nozzles with different bending angles are tested.

Best bending angle was found to be 160 degree.

Figure 6. 3D printed Adjustable nozzle

The nozzles are 3D printed.

They can be attached to the original nozzle by using bolts and nuts.

Figure 7. Adjustable Nozzle(Detachable Nozzle)

Iteration 1: Adjustable nozzle

These Adjustable nozzles with different bending angles can be attached to the original Mammoth Nozzles.

With the bending feature of the adjustable nozzle, flow can be directed to the undried area of the back mirror.

Figure 8. First On-field Test & Original Mammoth Blower Setup

Learned about the problem of the current drying system