Video Push-Cable AC Powering for Safer Drain Cleaning Inspection
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Solution Overview
Problem
Existing drain cleaning devices are inefficient and hazardous due to their reliance on pressurized air or fluids, rotating cables, and chemical treatments, which can be ineffective for serious obstructions and pose safety risks, especially in small diameter pipes.
Innovation Solution
A high frequency AC-powered drain cleaning system with a motorized cleaning apparatus and camera, utilizing a cable that transmits high voltage AC power efficiently, allowing for variable speed and direction control, and incorporating a self-leveling camera and utility locating device for safe and effective pipe inspection and cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If high voltage AC power is used to power the cleaning apparatus, then energy efficiency and motor control improve, but human contact safety risk increases
Solution Approach 1:
The patent transforms the power supply parameters by using high frequency AC power instead of traditional low frequency AC or DC power. This parameter change enables more efficient energy delivery to the motor while allowing for safer voltage levels due to the frequency characteristics, thus resolving the contradiction between energy efficiency and safety.
Solution Approach 2:
The patent replaces traditional mechanical power transmission systems with an electrical power delivery system using high frequency AC. This substitution allows for more efficient energy transfer and better control while reducing the mass that needs to be accelerated, thereby improving energy efficiency without compromising safety when proper insulation and frequency selection are used.
2Productivity
If a rotating cable with cleaning implements is used, then obstruction clearing capability improves, but device weight and bulk increase
Solution Approach 1:
The patent extracts the cleaning implements from a bulky rotating cable system and places them on a compact drum reel mechanism. This extraction allows the cleaning apparatus to be deployed only when needed and retracted when not in use, significantly reducing the weight and bulk of the moving portions of the device while maintaining full obstruction clearing capability.
Solution Approach 2:
The patent employs a dynamic cable management system where the cable can be rotated and deployed as needed rather than being a permanently extended rotating structure. This dynamic approach allows the device to maintain cleaning capability while minimizing weight and bulk during storage and non-operational states.
3Productivity
If pressurized air or fluids are used for cleaning, then obstruction dislodging effectiveness improves, but ease of operation deteriorates due to unwieldiness
Solution Approach 1:
The patent replaces complex pressurized fluid systems with a simpler motorized cable deployment mechanism. The motorized system provides direct mechanical force to dislodge obstructions without requiring complex pressurization equipment, making the device easier to operate while maintaining effectiveness.
4Ease of operation
If DC power from batteries is used, then portability improves, but energy efficiency deteriorates due to unnecessary load from accelerating cable mass
Solution Approach 1:
The patent uses AC power which allows for continuous operation without the energy losses associated with battery discharge and recharge cycles. The high frequency AC power delivery system maintains consistent power output for accelerating and rotating the cable mass, improving energy efficiency while the drum reel mechanism maintains portability through controlled deployment.
Solution Approach 2:
The patent changes the power supply parameter from DC battery power to high frequency AC power. This parameter change eliminates the energy inefficiencies of battery systems while the compact drum reel design preserves portability, resolving the contradiction between portability and energy efficiency.
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 system provides a safer and more efficient method for clearing obstructions and inspecting pipes by minimizing human contact risk, reducing energy inefficiencies, and enabling effective operation in small diameter pipes with improved safety and precision.
Implementation Method 1
a cable adapted for transmitting a high voltage and high frequency AC power signal
Implementation Method 2
The cleaning apparatus may include an electric motor to rotate one or more cleaning implements
Data Source
AI summary
Systems, devices, and methods for drain cleaning using high voltage, high frequency AC electrical power supplied through a video push-cable are disclosed. In one embodiment, a drain cleaning system may include a cable for carrying electrical control and/or data signals as well as alternating current (AC) power at a high voltage and high frequency relative to AC mains frequencies.