HVAC Drain Cleaning Assembly with Automatic Biocide Feed
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Solution Overview
Problem
HVAC drip pans and drain tubes often harbor bacteria and mold due to inadequate cleaning, which can reduce the efficiency of HVAC systems.
Innovation Solution
A cleaning assembly that includes an automatic feed apparatus to deliver a cleaning agent, such as a biocide solution, at a controlled rate into the drain pan or drain tube of an HVAC system, using a wicking component or tubing to regulate the flow based on the system's operating parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual cleaning methods are used for HVAC drip pans and drain tubes, then cleaning can be performed, but the system requires continuous manual oversight and cannot maintain consistent cleanliness
Solution Approach 1:
The cleaning assembly enables the HVAC system to clean itself automatically through a self-regulating wicking mechanism. The wick material automatically absorbs and transports cleaning solution from the reservoir to the drain pan without requiring external control systems, motors, or electronic components, achieving automation while maintaining simplicity.
Solution Approach 2:
The wicking material serves as an intermediary between the cleaning solution reservoir and the drain pan. It mediates the delivery of cleaning agents by capillary action, eliminating the need for complex pumping or metering systems while ensuring consistent application of the cleaning solution.
2Reliability
If cleaning agents are applied at high concentration or volume, then cleaning effectiveness improves, but the risk of chemical damage and environmental harm increases
Solution Approach 1:
The system changes the delivery parameters of the cleaning solution by using wick material with specific capillary properties to control flow rate and distribution. This ensures the cleaning agent is applied at optimal concentrations without over-application, maintaining effectiveness while minimizing chemical damage risk to HVAC components.
Solution Approach 2:
The wicking system delivers cleaning solution locally and uniformly to specific areas of the drain pan and drain tube. This localized application ensures that cleaning agents are concentrated where needed for maximum effectiveness while preventing excessive chemical exposure to other components of the HVAC system.
3Reliability
If frequent manual cleaning is performed, then cleanliness is maintained, but labor time and operational disruption increase
Solution Approach 1:
The cleaning assembly provides continuous automatic cleaning action through the wicking mechanism that constantly draws cleaning solution from the reservoir to the drain pan. This continuous operation maintains cleanliness without interruption, eliminating the need for periodic manual cleaning interventions and associated labor time.
Solution Approach 2:
The system performs preliminary cleaning action by continuously applying cleaning solution to prevent buildup of mold and bacteria before they can establish significant colonies. This proactive approach maintains cleanliness without requiring reactive manual cleaning operations.
4Reliability
If traditional cleaning methods are used, then simplicity is maintained, but consistent and effective cleaning cannot be achieved
Solution Approach 1:
The wicking material self-regulates the delivery of cleaning solution through capillary action based on its own absorption properties and the demand from the drain pan. This self-service mechanism ensures consistent cleaning application without requiring external control systems, sensors, or complex regulation mechanisms.
Solution Approach 2:
The wicking material acts as a passive intermediary that automatically regulates cleaning solution delivery. It mediates between the reservoir and drain pan, providing consistent flow rates through its capillary structure without requiring active control systems, thereby achieving reliability without 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
The cleaning assembly effectively prevents the growth of microorganisms in HVAC drip pans and drain tubes, enhancing the efficiency and longevity of HVAC systems by maintaining cleanliness without manual oversight.
Implementation Method 1
A cleaning assembly may include a wicking component that delivers a cleaning agent from a reservoir into a drain pan or drain tube of an HVAC assembly
Data Source
AI summary
The present application is directed to a cleaning assembly including: a cleaning agent including at least one of a fungicide, bactericide, viricide, or an algaecide, and an automatic feed apparatus, where the automatic feed apparatus is adapted to feed the cleaning agent at a controlled rate into at least one of a drain tube or a drain pan of an HVAC assembly, where the controlled rate is regulated by an operating parameter of the HVAC assembly