Dual-Pump Pool Cleaner Layout for Shallow-Water Suction
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Solution Overview
Problem
Conventional handheld swimming pool sewage suction machines with impeller pumps are limited in application scenarios and shape designs, unable to effectively operate in shallow ends due to the need for the impeller to be immersed in water, resulting in low cleaning efficiency and cleaning blind zones.
Innovation Solution
A handheld swimming pool sewage suction machine with a first water pump and a second submersible water pump, where the second pump is located below the first pump and connected through a bypass channel to raise the water level in the main channel, allowing the first pump to operate smoothly in shallow ends, and an intelligent control system to activate the second pump when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If an impeller pump is used as the core power source, then the pump can generate negative pressure to pump water and impurities, but the impeller must be immersed in water to activate, which limits the application scenarios and creates cleaning blind zones in shallow areas
Solution Approach 1:
The pump system is divided into two independent pumps: a first impeller pump for normal water level operation and a second submersible pump for shallow water operation. Each pump handles specific scenarios, allowing the system to adapt to both deep and shallow water conditions without limitation.
Solution Approach 2:
The dual-pump system provides multi-functional capability, enabling the sewage suction machine to operate effectively in both normal water levels (using the first pump) and shallow water levels (using the second pump), thus achieving universal applicability across different water depth scenarios.
2Device complexity
If the impeller pump is located at a high position, then the pump structure is simplified, but the pump cannot be activated when the water level is low, resulting in low cleaning efficiency
Solution Approach 1:
The system dynamically switches between the first and second pumps based on water level conditions. The control unit activates the appropriate pump according to real-time water level detection, ensuring optimal cleaning efficiency regardless of water depth while maintaining relatively simple pump structures.
Solution Approach 2:
A water level sensor acts as an intermediary between the water level condition and the pump activation system. It detects water level and provides signals to the control unit, which then determines which pump to activate, ensuring efficient operation without direct mechanical complexity in the pump structures themselves.
3Adaptability or versatility
If a second submersible pump is added to raise water level in shallow areas, then the operating range is expanded, but the device complexity increases
Solution Approach 1:
The second submersible pump performs preliminary action by raising the water level in shallow areas before the first impeller pump can operate. This preliminary water level elevation enables the main pump to function in previously inaccessible shallow zones, expanding operating range while keeping the control logic relatively simple.
Solution Approach 2:
The control unit uses feedback from water level sensors to intelligently determine when to activate the second pump and when to switch to the first pump. This feedback mechanism automates the complex coordination between two pumps, reducing the perceived complexity for the user while maintaining expanded operational capabilities.
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
Expands the operating range and improves cleaning efficiency by enabling the suction machine to function under varying water depths, enhancing operational flexibility and application scope.
Implementation Method 1
the rotation of its vanes will generate a negative pressure area inside a pump body, thereby pumping surrounding water and impurities into the pump body
Implementation Method 2
the second water pump is capable of directing the water to flow into the main channel from a second water inlet of the bypass channel when a predetermined condition is fulfilled
Data Source
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AI summary
The present disclosure relates to a handheld swimming pool sewage suction machine, including a body and a suction head connected thereto, the body being therein with a first water pump, a filtering device, a second water pump, a main channel and a bypass channel, the filtering device and the first water pump being at least partially located in the main channel, and the second water pump being at least partially located in the bypass channel; wherein the first water pump enables water to flow into the main channel from a first water inlet and to be discharged from a body outlet after filtration by the filtering device; and the second water pump enables the water to flow into the main channel from a second water inlet of the bypass channel when a predetermined condition is fulfilled. The handheld swimming pool sewage suction machine can start operating under different water depth conditions, with advantages of operational flexibility, wide range of applications and high cleaning efficiency.