Compact Liquid Level Control Module Using Dual Floats
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Solution Overview
Problem
In confined vessel spaces, existing multi-level liquid level monitoring systems require excessive space due to the need for multiple floats, making them inefficient for compact applications.
Innovation Solution
A compact liquid level control module with an elongated tubular housing and multiple electrical switches and floats, where the relative motion of the floats causes state changes in the switches, allowing for multi-level monitoring and control without the need for excessive space, utilizing magnetic forces to operate reed switches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple floats are provided for each liquid level to be detected, then multi-level liquid level monitoring capability is achieved, but the device requires excessive space for operation of the various level floats
Solution Approach 1:
The patent combines multiple float functions into a single integrated float assembly that can detect multiple liquid levels. Instead of using separate floats for each level detection point, the invention merges these functions into one compact unit with multiple sensing mechanisms, thereby achieving multi-level monitoring while minimizing the space required for float operation.
Solution Approach 2:
The patent employs a nested structure where multiple sensing elements are arranged concentrically or in a compact configuration within a single float body. This nesting approach allows multiple level detection capabilities to be housed within a minimal external footprint, resolving the contradiction between monitoring capability and space requirement.
2Adaptability or versatility
If multiple floats are provided for each liquid level to be detected, then multi-level liquid level monitoring capability is achieved, but the device complexity increases
Solution Approach 1:
The patent creates a universal float assembly that performs multiple functions - detecting different liquid levels, triggering corresponding switches, and providing compact integration. This multi-functional design eliminates the need for separate dedicated floats for each level, thereby reducing overall device complexity while maintaining full monitoring capability.
Solution Approach 2:
By merging multiple float functions into a single integrated assembly with combined sensing and actuation mechanisms, the patent reduces the total number of discrete components. This consolidation decreases device complexity while preserving the ability to monitor multiple liquid levels effectively.
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
Enables efficient monitoring and control of multiple liquid levels in a compact format, allowing for precise liquid level management and activation of discharge or alarm devices as needed, optimizing space usage and operational efficiency.
Implementation Method 1
The principle of buoyancy may be used to monitor liquid level, in which an object is provided having a lower specific gravity than the liquid being monitored. The object floats on the surface of the liquid, and thus the vertical position of the object moves as a result of any change in liquid level.
Implementation Method 2
The first electrical switch is operable by a magnetic force caused by motion of the first float past the first electric switch, the second electrical switch is operable by a magnetic force caused by motion of the second float past the second electric switch, and the third electrical switch is operable by a magnetic force caused by motion of the second float past the third electric switch.
Data Source
AI summary
A liquid level control module comprising an elongated tubular housing immersible through a surface of a liquid and into a bulk volume of the liquid, and first, second, and third electrical switches, and first and second floats movable along the tubular housing. The first electrical switch is disposed within a lower portion of the tubular housing, the second electrical switch is disposed within an intermediate portion of the tubular housing, and the third electrical switch is disposed within an upper portion of the tubular housing. Each of the switches has an open state and a closed state. Motion of the first float relative to the first switch changes its state. Motion of the second float relative to the second switch changes its state, and motion of the second float relative to the third switch changes its state. Thus a two-float module may provide three level control signals.