Underwater cleaner
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Solution Overview
Problem
Existing underwater cleaners for swimming pools face inefficiencies in removing high-mass dirt particles, require complex designs with high production costs, and struggle with difficult start-ups due to submersible pumps and unfavorable flow arrangements.
Innovation Solution
The cleaner incorporates a first water jet nozzle formed in one piece with the suction nozzle housing, directed close to the suction plane, and optionally a second water jet nozzle arranged at a distance, with specific angles and distances to enhance suction power, combined with a filter device on the actuation side for easy production and effective dirt removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the water jet nozzle opens into the suction chamber at a relatively large distance from the suction nozzle, then the device structure is simpler, but high-mass dirt particles cannot be removed or can be removed only with difficulty
Solution Approach 1:
The patent repositions the water jet nozzle to open directly into the outlet channel rather than into the suction chamber, changing the spatial dimension of water injection. This allows the water jet to directly interact with dirt particles in the flow path, enabling effective removal of high-mass particles while maintaining structural simplicity
2Adaptability or versatility
If a submersible pump is used to supply water to the water jet nozzle, then the device can operate independently, but start-up is difficult and air is conveyed for a relatively long period of time
Solution Approach 1:
The patent extracts the submersible pump from the system and replaces it with an external water pressure source. This eliminates the start-up problem where the pump conveys only air, as the external pressure source immediately provides pressurized water to the jet nozzle, enabling immediate operation without air conveyance delays
Solution Approach 2:
The system requires preliminary flooding of the suction chamber before operation, which ensures that the chamber is filled with water before the water jet begins operation. This preliminary action prevents air from being drawn in during operation, solving the start-up issue while maintaining independent operation capability
3Productivity
If the suction nozzle is designed to aspirate water and contaminants, then the cleaning function is achieved, but particles will very quickly clog the screen
Solution Approach 1:
The patent introduces a filter device as an intermediary component positioned in the outlet channel. This filter captures particles before they can clog the screen, allowing the suction nozzle to continue aspirating water and contaminants effectively while the filter protects the screen from clogging, maintaining both cleaning effectiveness and reliability
4Ease of manufacture
If jet nozzles lead away from the suction plane substantially at an angle of around 90°, then the water jet principle can be applied, but they cannot be used to tear away dirt on the swimming pool floor
Solution Approach 1:
Instead of directing the water jet away from the suction plane at 90°, the patent inverts the approach by directing the water jet nozzle to open directly into the outlet channel with its flow center line directed into the outlet channel. This reversal allows the water jet to directly impinge on dirt particles in the flow path, enabling effective tearing away of dirt while maintaining the water jet principle
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Achieves efficient removal of high-mass dirt particles and reduces production costs by optimizing the water jet and suction arrangement, ensuring easy assembly and precise operation.
Implementation Method 1
via which water can be fed under pressure into the suction chamber such that a negative pressure is established in the suction chamber according to the water jet pump principle
Implementation Method 2
a first water jet nozzle opens into the suction chamber in such a way that a flow center line of the first water jet nozzle is directed into the outlet channel
Data Source
AI summary
The invention relates to an underwater cleaner, in particular for a swimming pool, comprising a suction nozzle housing having a suction nozzle which communicates with a suction chamber, and having a suction mouth which defines a suction plane, wherein an outlet channel stems from the suction chamber, which outlet channel has a connection for a filter device in the region of its outlet opening, and comprising at least one water jet nozzle which opens into the suction chamber in the region of the suction nozzle and via which water can be fed under pressure into the suction chamber such that a negative pressure is established in the suction chamber according to the water jet pump principle, wherein a first water jet nozzle opens into the suction chamber in such a way that a flow center line of the first water jet nozzle is directed into the outlet channel.