Ball Float Alarm for Sump Pump Level Detection
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Solution Overview
Problem
Existing sump pump systems face issues with unreliable switching mechanisms, rapid activation and deactivation, and lack of an effective alarm system to indicate pump failure or liquid level changes, leading to inefficient water management and potential pump burnout.
Innovation Solution
A ball float alarm that emits a signal when the liquid level rises above a predetermined level in a sump, using a buoyant sphere and cable mechanism to actuate a signal based on the liquid's orientation, which can transmit alerts to a home alarm system, indicating pump failure or adequate water discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a continuously running pump is used to remove water from the sump, then the water level is maintained at a safe point, but energy is wasted and the pump is at risk of burning out from constant operation
Solution Approach 1:
The float switch is positioned to activate the pump before the water reaches a dangerous level, allowing the pump to operate intermittently rather than continuously. The pump starts early in the water rise cycle and stops when the float reaches the predetermined level, preventing both water damage and unnecessary energy consumption.
Solution Approach 2:
The float switch provides continuous feedback on water level conditions to the pump control system. As the float rises with the water level, it automatically signals the pump to start or stop, creating a closed-loop control system that optimizes pump operation based on actual water conditions rather than running continuously.
2Use of energy by moving object
If the pump is activated by a float switch at a predetermined level, then energy waste is reduced, but the pump may shut down too quickly and activate/deactivate frequently during rapid water rise cycles
Solution Approach 1:
The float switch is positioned to activate the pump early in the water rise cycle, before the water reaches a dangerous level. This preliminary activation allows the pump to build a buffer of removed water, reducing the likelihood of frequent on/off cycling during rapid rise events.
Solution Approach 2:
The system design incorporates a safety margin by positioning the float switch to activate the pump before the water reaches the maximum safe level. This creates a cushion of time and capacity that prevents rapid cycling during sudden water influx events, protecting both the pump and switch mechanism.
3Use of energy by moving object
If the pump is deactivated when the water level falls to a safe point, then energy waste is minimized, but the water level may remain high enough that a small influx quickly reactivates the pump
Solution Approach 1:
The float switch is positioned to activate the pump before the water reaches a dangerous level, allowing the pump to remove water proactively rather than reactively. This prevents small water influxes from accumulating to activation levels in the first place, improving overall water management efficiency.
Solution Approach 2:
The float switch provides continuous feedback on water level conditions, allowing the pump to operate in response to actual water accumulation rather than on a fixed schedule. This ensures the pump runs only when necessary to maintain safe water levels, optimizing both energy use and water removal efficiency.
4Measurement precision
If the pump and switch are located in the sump area, then water detection is direct, but the environment is dirty and damp making maintenance of electrical switches difficult
Solution Approach 1:
The float acts as an intermediary mechanism that transfers the water level detection function from the harsh sump environment to a more accessible location. The float responds to water level changes in the sump but can be positioned and maintained in a more accessible area, separating the sensing function from the maintenance burden.
Solution Approach 2:
The patent replaces direct electrical switching in the wet sump environment with a mechanical float mechanism that responds to water level changes. This mechanical approach is more resistant to the damp, dirty conditions and can be more easily maintained than electrical switches located in the same environment.
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 ball float alarm provides reliable and efficient detection of rising liquid levels, reducing unnecessary pump activation and deactivation cycles, and alerts homeowners to potential pump failures or liquid overflow, thus optimizing sump pump operation and extending equipment lifespan.
Implementation Method 1
The alarm is sufficiently buoyant to float on the liquid inside the cavity. Thus, the alarm may float on the liquid, or hang suspended from the cable, depending on the level of the liquid.
Implementation Method 2
a ball float alarm that is activated by conditions related to the rising and falling of a liquid in a sump, and specifically when a magnet and an alarm contact inside a buoyant sphere pivot proximally to each other based on the rising and falling of the sphere relative to the liquid level
Data Source
AI summary
A ball float alarm emits a signal when a liquid rises above a predetermined level inside a sump. The alarm is activated by conditions related to the rising and falling of the liquid in the cavity. The alarm emits a signal when the liquid rises above the predetermined level, and then powers off when the liquid falls beneath the predetermined level. A buoyant sphere is supported by a cable from above the cavity. The alarm floats on the liquid when the liquid level is above a predetermined level. When the sphere floats, the cable is lax. The lax cable causes a magnet and an alarm contact inside the alarm to pivotally join, and thus actuate an alarm signal. When the liquid falls below the predetermined level in the cavity, the cable becomes lax, causing the alarm contact to pivot distally from the magnet, which shuts off the alarm.