Abrasive Blasting Humidity Control and Grounding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional abrasive blasting systems face challenges with electrostatic buildup, which can cause harm to workers and damage to structures, and existing solutions like HVAC systems are costly and inefficient for maintaining relative humidity.
Innovation Solution
An abrasive blasting system with a fluid subsystem to locally increase air humidity and a grounding subsystem to reduce electrostatic buildup, featuring a compressor, fluid reservoir, mixer, and control system to regulate relative humidity and a portable design for flexible use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a HVAC system is used to increase relative humidity globally, then electrostatic buildup is reduced, but operating and maintenance costs increase significantly
Solution Approach 1:
The patent introduces a portable humidity control device that generates a localized zone of increased relative humidity around the abrasive blasting operation. Instead of conditioning the entire facility environment, the system creates a microclimate precisely where needed, dramatically reducing energy consumption while maintaining effectiveness in preventing electrostatic buildup.
Solution Approach 2:
The portable humidity control device is designed to be self-contained with its own water reservoir and power source, eliminating dependence on facility-wide HVAC infrastructure. The device independently generates and maintains the required humidity level at the point of use, making the system autonomous and cost-effective.
2Use of energy by stationary object
If a portable humidity control device is used, then energy cost is reduced, but the device complexity increases
Solution Approach 1:
The portable humidity control device integrates multiple functions into a single unit: water storage, vaporization, humidity generation, and mobility. This multi-functionality consolidates what would otherwise require separate systems, managing complexity while delivering comprehensive humidity control capability.
Solution Approach 2:
The system divides the humidity control function into a separate, movable portable unit independent of the facility's fixed HVAC infrastructure. This segmentation allows the humidity control capability to be deployed only where and when needed, reducing overall system complexity while maintaining effective operation.
3Reliability
If relative humidity is increased to reduce electrostatic buildup, then worker safety is improved, but the system cost increases
Solution Approach 1:
The patent employs inexpensive consumable elements such as water from standard reservoirs and readily available heating components. Rather than investing in expensive permanent HVAC modifications, the system uses affordable, replaceable components that can be easily replenished, significantly reducing overall system cost while maintaining worker safety.
Solution Approach 2:
The portable device is designed for easy setup and operation by end users without requiring specialized HVAC infrastructure or professional installation. The self-contained nature with integrated water reservoir and power source enables workers to independently implement safety measures, reducing both infrastructure costs and operational 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
Effectively reduces or eliminates electrostatic buildup by locally controlling humidity and grounding the structure, providing a cost-effective and efficient solution for abrasive blasting operations.
Implementation Method 1
a fluid subsystem adapted to locally increase the relative humidity of the air passing through the abrasive blasting system
Implementation Method 2
a grounding subsystem adapted to electrically ground the blasted structure
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
An abrasive blasting system includes an air subsystem being adapted to provide pressurized air, a fluid subsystem being adapted to provide fluid, a mixer being adapted to mix the fluid with the pressurized air, and a media subsystem being adapted to provide abrasive media. The method includes pressurizing the air, mixing the fluid with the air, thereby changing the relative humidity of the air, and blasting a surface of a structure with abrasive media mixed with the fluid and the pressurized air.