Magnetic Float Chamber Control for Submersible Pump Water Levels
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Solution Overview
Problem
Submersible pumps face challenges in heat dissipation when the water level drops, leading to potential damage from turbulent water flow and float movement, which can cause electrical wire loosening or detachment and collisions with the pump body.
Innovation Solution
A float control unit with a magnet-equipped float and a float chamber housing that allows for up-and-down movement, connected to the submersible pump's outer wall, eliminating the need for electrical wires and reducing the risk of damage from float movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrical wires are used to connect the float switch to the casing, then the pump can be controlled based on water level, but the electrical wires may loosen and detach due to turbulent water flow causing large-scale float movement
Solution Approach 1:
The patent removes the electrical wires from the float control mechanism entirely. Instead of using a float switch connected by wires, the invention uses a float with a magnet that actuates reed switches mounted on the pump housing. This extraction of the electrical connection from the moving float eliminates the problem of wire loosening and detachment caused by turbulent water flow.
Solution Approach 2:
The patent introduces magnetic field interaction as an intermediary between the float and the control switches. The float contains a magnet that actuates reed switches through magnetic coupling without physical contact or electrical wires. This intermediary magnetic field transmission mechanism allows reliable control signal transmission while isolating the electrical components from the harsh water environment and turbulent flow.
2Measurement precision
If the float is allowed to move freely in the water, then it can accurately detect water level changes, but it may collide with the pump body causing damage to components
Solution Approach 1:
The patent segments the float control system into distinct functional components: a float for detection, a magnet for signal transmission, and reed switches for control activation. The float is designed to move freely vertically for accurate water level detection, while the reed switches are positioned on the pump housing at specific heights to detect the float's position without requiring the float to physically contact the housing.
Solution Approach 2:
The patent replaces the mechanical contact-based float switch with a magnetic field-based reed switch activation system. The float's magnet actuates the reed switches through magnetic coupling without mechanical contact. This substitution eliminates collision damage while maintaining accurate water level detection, as the float can move freely within the water column without risking impact with the pump body.
3Stability of the object's composition
If the float control unit is fixed rigidly to the pump, then it provides stable mounting, but it cannot adapt to different installation positions and water level requirements
Solution Approach 1:
The patent employs multiple reed switches positioned at different heights on the pump housing, allowing the system to adapt to various installation positions and water level requirements. The float control unit can be mounted at different locations, and the reed switches can detect water levels relative to their positions. This dynamic configuration allows the same pump to be installed in different orientations and depths while maintaining proper float control functionality.
Solution Approach 2:
The patent creates a universal float control system that can function in multiple installation scenarios. By providing multiple reed switches at different heights and positions, the system can accommodate various pump installation orientations (vertical, horizontal, inclined) and water level requirements. The same pump model can be deployed in different applications without requiring modifications to the float control unit, achieving multi-functionality and broad adaptability.
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
The float control unit effectively manages the submersible pump's operation by detecting water level changes without electrical connections, reducing the risk of damage and ensuring reliable operation across varying water levels.
Implementation Method 1
a float, having at least one magnet
Implementation Method 2
at least one control element which controls the pumping unit in response to the height of the float, the control element preferably being a reed switch
Data Source
AI summary
A submersible pump, comprising: a casing, having accommodated therein a pumping unit and a drive unit for driving the pumping unit; a base, defining a pump inlet; and a float control unit. The float control unit comprises: a float, having at least one magnet; and a float chamber housing, defining a float chamber in which the float is movable up and down. The float chamber has at least one opening which connects the float chamber with an external environment. At least part of the float chamber housing is movably or removably attached to an outer wall of a casing of the submersible pump.