| 摘要 |
There is provided a condensing unit having a helical unit. The helical unit is arranged adjacent a propeller fan driven by a central motor. The helical unit comprises a plurality of fins. Each fin extends from an outer circumference of the propeller inwardly towards the motor. Advantageously, the fins act to impart a spiral pattern on the air movement as it moves there through, which has been found to improve the efficiency of the propeller fan such that a lower strain is placed on the rotation means. |
