Variable Pressure Smoke Machine for Leak Detection
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Solution Overview
Problem
Current vapor generating devices are limited in their ability to detect leaks in fluid systems with varying inspection pressure requirements, as they are typically designed for specific test pressures, making them inefficient and costly to adapt for different applications, and require complex maintenance procedures.
Innovation Solution
A variable pressure smoke machine with a housing, heating element, and liquid transfer device that can switch between multiple pressure operating modes, using a ceramic heater and wicking liquid transfer system for efficient smoke generation and easy maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a vapor generating device is designed for a specific test pressure, then it can effectively detect leaks at that pressure, but it cannot efficiently test fluid systems with different inspection pressure requirements
Solution Approach 1:
The patent implements a pressure controller that can switch between multiple pressure operating modes (first pressure mode and second pressure mode) based on different inspection requirements. This dynamic pressure adjustment capability allows a single device to adapt to various inspection pressure requirements without requiring multiple separate devices, thereby resolving the contradiction between versatility and complexity.
2Adaptability or versatility
If multiple vapor generating devices are used to cover different pressure ranges, then different inspection pressure requirements can be met, but the cost and complexity of maintenance increase
Solution Approach 1:
The patent designs a universal vapor generating device that can operate in multiple pressure modes through a controllable pressure regulator. This multi-functional capability eliminates the need to maintain multiple separate devices for different pressure ranges, simplifying maintenance procedures and reducing overall system complexity while maintaining coverage of diverse inspection pressure requirements.
3Reliability
If standard EVAP test pressure of 0.47 psi is used, then naturally aspirated engine leak detection is effective, but forced induction systems operating at 6-40 psi cannot be properly tested
Solution Approach 1:
The patent employs a pressure controller capable of changing the operating pressure parameter between at least two distinct modes: a first mode suitable for naturally aspirated engines (lower pressure) and a second mode for forced induction systems (higher pressure). This parameter adjustment ensures reliable leak detection across different engine types and operating conditions, resolving the contradiction between detection effectiveness and adaptability.
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 efficient smoke generation across different pressure ranges, simplifies maintenance, and reduces the need for multiple devices, allowing for effective leak detection in various fluid systems with different inspection pressure requirements.
Implementation Method 1
heating elements to create vapor from a liquid
Implementation Method 2
visible gas or vapor that is mixed with air supplied thereto under pressure so that the mixture can be delivered to a fluid system
Data Source
AI summary
Provided is a smoke machine that comprises a heating element disposed within a chamber wherein smoke is created. The chamber may contain a liquid reservoir containing a liquid that creates visible smoke when heated, e.g. to the point of vaporization, evaporation and/or condensation. A liquid transfer device transfers the liquid from the reservoir towards the heating element. The liquid transfer device may be provided around the periphery of the heating element, e.g. by being wrapped or coiled around it, of by having the heating element inserted in it. It may be tied in place or fastened by a fastener. It may be held by friction fit provided by a friction allowing wicking but providing substantially complete coverage of the heating element or part thereof. Also provided is a smoke machine that comprises a pressure controller.