Swimming pool cleaning apparatus may include a cleaning unit intended to be immersed in a swimming pool and at least one liquid filter circuit between at least one liquid inlet and at least one liquid outlet via a filter chamber removable from the body of the cleaning unit. The filter chamber may include a cover and a filter basket. The cover may include components for fastening the filter basket and locking the filter chamber to the body of the cleaning unit. The locking component may be releasable and, when released, may cause an extraction handle to be deployed from the filter chamber and urged toward a predetermined position.

A pool cleaner for use in a pool may include a housing, a driving assembly, a traction assembly, and a filtration assembly. The driving assembly may include an inlet conduit configured to receive pressurized water, an impeller in fluid communication with the inlet conduit, an outlet conduit in fluid communication with the impeller, and an outlet nozzle coupled to the outlet conduit and may be configured to eject the pressurized water upward from the housing and into the pool in a parallel or oblique ejection direction relative to a vertical axis. The traction assembly may be coupled to the impeller to drive the housing across the pool and the filtration assembly may be configured to filter water from the pool.

A pool cleaner for cleaning a pool, the pool cleaner may include a filtering element for filtering fluid; at least one sensor for sensing an actual yaw of the pool cleaner and an actual orientation of the pool cleaner; at least one steering element that is configured to move the pool cleaner along a cleaning path, during a cleaning process of segments of multiple sidewalls of the pool; wherein the cleaning path mostly includes substantially horizontal cleaning path segments that have a cleaning path segment yaw that is a substantially horizontal yaw; wherein the certain region is fully submerged; and a controller that is configured to control the at least one steering element, based on the actual yaw of the pool cleaner.

Cleaning of a swimming pool may be facilitated by systems and methods for mapping a pool environment. Such mapping may occur in three dimensions when appropriate. At least some of the systems may include an apparatus for light detection and ranging (LIDAR) tethered to an automatic swimming pool cleaner.

Device for treating internal walls of aquatic basins includes at least one suction cup head, a mobility assembly by means of which it is possible to move the suction cup head along a wall that is to be treated, the mobility assembly including a traveler having motorized wheels that can be oriented according to two unique rolling positions, these two positions being at 90 degrees to one another.

A method of analysis of a stream of screenshots in order to determine pool water quality and robot presence, wherein software analytics compares color or clarity of water in order to figure out if the pool has dirty pool water. The software analytics checks the acceptable boundary regarding water clarity, wherein dirty water will typically go cloudy and/or have a taint of green, and the software analytics determines that higher levels of green in the water indicates worse water quality. The software analytics utilizes machine learning, neural networks and artificial intelligence by being trained on high numbers of screenshots of pools in order to make an accurate determination as to water clarity, a taint of green in water, and cloudiness in water.

The invention relates to a swimming pool cleaning system comprising a cleaning apparatus to be immersed in the pool, the system further comprising at least one moving image acquisition means secured to a float via a flexible tie.

The invention relates to a propeller arrangement (1) having a propeller part (2) and a shaft part (3), in particular for an underwater vacuum cleaner, wherein the propeller part (2) and the shaft part (3) are coaxially connected to one another via a latching connection (4), which latching connection (4) has at least two latching fingers (5) which can move elastically in a latching direction (R) radially with respect to an axis of rotation (1a) of the propeller arrangement (1), and a latching opening (6) for accommodating the latching fingers (5).

The latching fingers (5) are formed integrally with the shaft part (3). The latching fingers (5) and the latching opening (6) form—in and/or against a direction of rotation (P) of the propeller arrangement (1)—a positive connection. This enables an easily detachable rotary connection between the propeller part (2) and the shaft part (3) in a simple manner.

A cleaning robot for underwater includes a main body including a magnetic speed detection mechanism and a magnetic collision buffer mechanism. The magnetic speed detection mechanism includes two speed detection wheel mechanisms mounted on the main body. The speed detection wheel mechanism includes a wheel bracket, an induction wheel rotationally disposed inside the wheel bracket, a magnet embedded on one side of the induction wheel, and a magnetic force sensor disposed inside the wheel bracket and located on one side of the magnet.

Automatic swimming pool cleaners may include time-of-flight sensors. The sensors may operate underwater and transmit and receive light radiation. They may be useful especially in providing distance and angular information relating to location of a pool cleaner relative to a wall of, or object within, a pool. The automatic swimming pool cleaner may be controlled based on the sensed information from the time-of-flight sensors