The ability of
Pool Cleaners to cover the bottom, walls, and waterline of the swimming pool during cleaning depends on the design of their walking mechanism. The walking mechanism determines the movement mode, steering ability, and climbing performance of Pool Cleaners, directly affecting the integrity of cleaning coverage. This article analyzes the product from three perspectives: walking mode, wall climbing principle, and path coverage.
Wheeled walking is the most common way of movement, driven by two to four wheels to move the body. The advantages of wheeled structure are simple structure, flexible steering, and high efficiency of movement on the bottom plane of the pool. The surface of the driving wheel is usually equipped with anti slip patterns or rubber layers to increase adhesion on smooth pool bottoms. Some products adopt a layout of front wheel drive and rear wheel following, with the front wheels changing direction and the rear wheels following, resulting in a smaller turning radius.
Crawler walking uses rubber tracks that wrap around both sides of the body, providing stronger adhesion through a larger contact area between the tracks and the bottom of the pool. The advantage of a tracked structure is that it has better grip on slopes and pool walls than a wheeled one, making it less prone to slipping and suitable for cleaning tasks that require climbing pool walls. The disadvantage is that it requires differential movement between the two tracks when turning, with a larger turning radius and less flexibility in narrow areas compared to wheeled vehicles.
The rolling brush type walking is equipped with a rotating rolling brush at the bottom of the Pool Cleaners. The rolling brush not only cleans the bottom of the pool, but also pushes the body to move through the friction with the pool bottom. The advantage of the rolling brush structure is that it integrates brushing and walking, and has a good cleaning effect on algae and stains attached to the bottom of the pool. The disadvantage is that the movement speed is slow, and the roller brush needs to be replaced after wear, with a higher maintenance frequency than wheeled and tracked models.
The cleaning of pool walls and waterline positions is a difficult task in pool cleaning, and Pool Cleaners need to overcome their own weight to maintain adhesion and movement on vertical or inclined surfaces.
The combination of adsorption force and driving force is the key to climbing walls. Pool Cleaners require sufficient suction force on the pool wall to press them against the wall, while the driving wheels or tracks need to provide upward driving force. The adsorption force usually comes from the negative pressure generated by the internal water pump of Pool Cleaners, which adsorbs the body onto the wall. The driving force comes from the wheel set or track driven by the motor. Excessive suction force can increase walking resistance, while insufficient suction force may cause the aircraft to detach from the wall and slide off.
The design of the center of gravity affects the stability of wall climbing. When the center of gravity of an Pool Cleaners is close to the wall, the positive pressure of the body on the wall is greater, and the adhesion is more stable. When the center of gravity deviates from the wall, the fuselage tends to flip outward, requiring stronger suction force to maintain adhesion. Some products place heavier components such as batteries and motors near the wall to optimize the center of gravity distribution during wall climbing.
Waterline cleaning is an extended application of wall climbing ability. The waterline is located at the boundary between the water surface and the pool wall, which can easily accumulate oil and algae. Pool Cleaners with wall climbing ability can ascend to the waterline position and use a roller brush or water spray device to remove attachments in that area. Some products are equipped with a dedicated waterline cleaning mode, where Pool Cleaners move horizontally along the pool wall to the vicinity of the water surface, completing the cleaning of the waterline area.
Random walking is the path logic adopted by the basic product. Pool Cleaners randomly change direction at the bottom of the pool and gradually achieve complete coverage probability through long-term operation. This method does not require sensors and complex algorithms, and has a lower cost, but the coverage efficiency depends on the running time, which may result in local repeated cleaning and local omissions.
Plan walking by controlling the walking path through sensors and algorithms. After identifying the shape and boundary of the Pool Cleaners identification pool, it is covered by a parallel strip or spiral path system. The coverage efficiency of planned walking is significantly higher than that of random walking, and the time required to complete cleaning of the same area is shorter. Some products support zone cleaning, dividing the swimming pool into several areas for individual treatment.
Steering control affects the passability of Pool Cleaners near corners and obstacles. Wheeled products can make small radius turns at corners through differential steering, while tracked products require multiple adjustments in direction at corners. Some products are equipped with collision sensors at the front end of the body, which automatically retract and turn when encountering pool walls or obstacles, reducing jamming.
Overall, the walking mechanism of Pool Cleaners determines their mobility efficiency, wall climbing ability, and coverage integrity. Wheel type, track type, and roller brush type have their own applicable scenarios, and wall climbing ability depends on the combination of suction force and driving force, as well as the design of the center of gravity. The path planning method affects the efficiency of cleaning coverage. When selecting, users can consider the shape of the swimming pool, the material of the pool walls, and the frequency of cleaning, and pay attention to whether the walking method is suitable for the terrain conditions of their own swimming pool, whether the wall climbing ability meets the needs of waterline cleaning, and whether the path planning method matches their cleaning habits.
