Condensate Drain Piston Suction Clearing for HVACR Clogs
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Solution Overview
Problem
HVACR condensate drain lines frequently clog due to algae or fungus growth, leading to water backup and potential property damage, and existing solutions are either ineffective or require invasive and messy procedures.
Innovation Solution
A device comprising a piston with a flexible flange for insertion into the condensate drain pipe, attached to a rod and handle, which creates a suction pressure upon rapid withdrawal to dislodge blockages, allowing water to drain freely without damaging the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high pressure gas is blown into the drain line to dislodge the plug, then the blockage is cleared, but the plug is ejected towards the inside A/C unit causing mess and potential damage
Solution Approach 1:
Instead of blowing gas from the proximal end toward the distal end (conventional method), the invention inserts the piston from the distal end and rapidly withdraws it toward the proximal end, creating suction that pulls the blockage outward through the distal end, reversing the direction of force application and blockage ejection
Solution Approach 2:
The piston acts as an intermediary tool that transfers momentum to the blockage through fluid suction rather than direct mechanical contact, allowing the blockage to be removed through the fluid medium (condensate water) without direct ejection forces
2Productivity
If plumber snakes or plungers are used to clear blockages, then mechanical force is applied to dislodge the plug, but the delicate HVACR drain line material may be damaged
Solution Approach 1:
The invention uses hydraulic suction forces generated by rapid piston withdrawal to remove blockages, replacing mechanical scraping or pushing forces with fluid pressure differentials that are gentler on the delicate PVC or plastic drain line material
Solution Approach 2:
The invention changes the parameter of force application from continuous mechanical pressure (plumber snake) or localized pressure (plunger) to a transient suction force created by rapid piston withdrawal, achieving blockage removal with lower peak forces distributed over the fluid column
3Productivity
If the drain line is cut to apply pressure or suction, then blockages can be cleared, but spillage occurs requiring repair or replacement of the drain line
Solution Approach 1:
The invention extracts the need for cutting the drain line by successfully applying suction forces through the intact distal end opening, removing the blockage through the existing pathway without creating new openings that would require repair
4Productivity
If pressure or suction is applied at the distal end using mouth or pumps, then blockages can be cleared, but the method is complex or potentially unhealthy
Solution Approach 1:
The invention uses a simple, inexpensive, single-use piston that can be inserted and rapidly withdrawn to clear blockages, replacing complex reusable pump systems or unsafe manual methods with a disposable tool that achieves the same result more simply
Solution Approach 2:
The piston design allows rapid manual withdrawal by the technician without requiring operation of complex pumping equipment, making the system self-sufficient and eliminating the need for external power sources or complex control mechanisms
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 device efficiently clears blockages in HVACR condensate drain lines with minimal training and no special skills, preventing water backup and damage, while being easy to use and economical to produce.
Implementation Method 1
the removal creating a suction pressure sufficient to clear blockages within the drain line
Data Source
AI summary
A device to clear a blockage from an HVACR condensate drain line. A piston connected to a rod with a handle is inserted directly into the distal or outlet end of a condensate drain pipe and then rapidly withdrawn to create a vacuum or suction within the drain line. When sufficient suction pressure is created, it will dislodge a blockage in the drain line. Typically the piston has a proximal end with a diameter slightly greater than the inside diameter of the condensate drain pipe. Upon removal of the device from the drain pipe, the proximal end is caused to expand to its full diameter, creating an airtight and fluid tight seal with the inner diameter of the drain pipe, allowing for the creation of negative pressure and/or suction upstream to dislodge the blockage.