Yes, it is possible for a dryer vent elbow to become undone due to the vibrations and jostling caused by the dryer tumbling. Dryers can generate significant vibrations during their operation, especially if they are not properly balanced or if the load inside is unevenly distributed. Over time, these vibrations can cause the connections of the dryer vent system to loosen, including the elbow.
A dryer vent elbow is a piece of ductwork that allows the venting system to navigate corners or bends while still maintaining proper airflow. If the elbow was not securely fastened or if the connections were not tightened properly, the constant shaking and movement of the dryer could lead to it coming undone.
It's essential to ensure that all components of the dryer vent system are securely installed and properly fastened to prevent any potential safety hazards, such as lint buildup, reduced airflow, or even the risk of a fire. Regular maintenance and inspections of the dryer vent system can help identify and address any issues, ensuring the safe and efficient operation of the dryer.