Gas Furnace Condensate Trap Blockage Sensing With Float Feedback
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Solution Overview
Problem
Condensate water traps for gas furnaces lack a mechanism to detect pipe blockages, leading to stagnation and potential freezing of condensate water, which can reduce heating efficiency and cause damage.
Innovation Solution
A condensate water trap with a sensing mechanism that includes a float housing and sensor to detect residual condensate water in a third flow path, indicating blockage, allowing for timely intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a condensate water trap is designed without a sensing mechanism, then the device complexity is reduced and manufacturing is simpler, but the reliability decreases due to undetected pipe blockages causing stagnation and potential freezing
Solution Approach 1:
The patent implements a feedback mechanism by introducing a sensing system that continuously monitors the condensate water level and detects blockages in the drainage pipe. The sensor provides real-time information about the system state, enabling timely detection of problems and triggering appropriate responses, thus resolving the contradiction between reliability and complexity by adding intelligent monitoring capability.
Solution Approach 2:
The patent replaces complex mechanical detection methods with a sensing mechanism that uses electrical or electronic sensors to detect blockages. This substitution reduces mechanical complexity while improving reliability, as the sensing system can detect blockages more accurately and with fewer moving parts compared to traditional mechanical level indicators or float mechanisms.
2Ease of manufacture
If no sensing mechanism is installed, then the manufacturing cost and device complexity are minimized, but condensate water stagnation goes undetected leading to potential freezing and damage
Solution Approach 1:
The patent applies preliminary action by installing a sensing mechanism that proactively detects blockages before they lead to harmful effects. The sensor continuously monitors the system and can trigger warnings or shutdowns before condensate water freezes or causes damage, thus preventing the harmful effect while maintaining ease of manufacture through a relatively simple sensing component.
Solution Approach 2:
The sensing mechanism enables the condensate water trap to monitor and protect itself automatically. The system self-detects blockages and can trigger alerts or shutdown sequences without external intervention, preventing freezing and damage while keeping the overall device simple and easy to manufacture. This self-service capability resolves the contradiction by adding minimal complexity that provides maximum protection.
3Difficulty of detecting and measuring
If a sensing mechanism with float housing and sensor is added, then detection capability is improved, but the device complexity and number of components increase
Solution Approach 1:
The patent uses a float housing that operates on buoyancy principles (hydraulics) to detect water level and blockages. The float mechanism converts water level changes into mechanical motion that can be sensed by a sensor, providing effective detection capability while keeping the component design relatively simple and intuitive, thus resolving the contradiction between detection difficulty and device complexity.
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 detection of pipe blockages, preventing condensate water stagnation and potential freezing, thereby maintaining heating efficiency and extending the lifespan of gas furnace components.
Implementation Method 1
a float accommodated inside the float housing and configured to float when the residual condensate water enters the float housing through the housing hole
Implementation Method 2
a sensor for sensing the degree of floating of the float
Data Source
AI summary
Provided is a condensate water trap for a gas furnace that collects and discharges condensate water produced in a heat exchanger and an exhaust pipe. The condensate water trap includes: a first inlet through which the condensate water produced in the heat exchanger is introduced; a second inlet through which the condensate water produced in the exhaust pipe is introduced; a first flow path through which the condensate water coming from the first inlet passes; a second flow path through which the condensate water coming from the second inlet passes; an outlet through which the condensate water introduced through the first and second inlets is discharged; a third flow path into which the residual condensate water passed through at least one of the first and second flow paths but not discharged through the outlet is introduced; and a sensing mechanism that senses if the amount of residual condensate water introduced into the third flow path is greater than or equal to a given amount.