Nested Exhaust Pipe Accessory for Structural Support

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Solution Overview

Problem

Commercial kitchen and building heating exhaust ventilation systems require enhanced structural strength and form support to ensure safety and compliance with regulations, particularly due to the toxic nature of gases and particles involved, which existing systems struggle to provide efficiently.

Innovation Solution

A pipe and accessory assembly where a securely mated accessory with a specific outer diameter ratio to the exhaust pipe enhances structural strength and form support, applicable to both single-wall and double-wall systems, using materials like stainless steel and galvanized steel, and adhering to specific dimensional ratios to maximize integrity and reduce assembly time and resource usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If traditional exhaust pipe systems are used without additional structural support, then assembly is simpler and faster, but structural strength and form support are insufficient

Engineering Contradiction:

Improvestructural strengthVSAvoidsystem complexity

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The accessory is designed to fit over the exhaust pipe in a nested configuration, where the accessory's outer diameter is greater than the pipe's outer diameter (ratios between 1.000 and 1.750, preferably 1.004 and 1.429). This nesting approach provides structural reinforcement without requiring a completely separate support system, thus improving strength while limiting complexity increase.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The accessory functions as a structural shell that envelops the exhaust pipe, providing form support and rigidity. The accessory acts as a thin-walled structural element that significantly enhances the pipe's mechanical properties without adding substantial weight or complexity to the overall system.

Inventive Principle:

Principle #30Flexible shells and thin films

2Strength

If accessory with larger outer diameter is used to enhance structural strength, then form support is improved, but space occupation increases

Engineering Contradiction:

Improveform supportVSAvoidspace occupation

Core Design Contradiction:

StrengthVSArea of stationary object

Solution Approach 1:

The patent specifies precise parameter ranges for the accessory-to-pipe outer diameter ratio (1.000 to 1.750, preferably 1.004 to 1.429). By optimizing this parameter, the design achieves maximum form support and structural strength while minimizing the increase in overall diameter and space occupation. This parametric optimization ensures that the accessory provides sufficient reinforcement without excessive space consumption.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If more components and fittings are used to ensure proper fitting and construction, then safety and compliance are improved, but assembly time and resource consumption increase

Engineering Contradiction:

Improvesafety complianceVSAvoidassembly time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The accessory combines multiple functions into a single component: it provides structural reinforcement, form support, and facilitates proper fitting and connection. By merging these functions that would traditionally require separate components (support rings, connection fittings, alignment fixtures), the design improves safety and compliance while reducing assembly time and resource consumption.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS11703155B2Exhaust pipe accessory and uses thereof

Publication Date: 2023.07.18 JEREMIAS INC

AI summary

Products and methods for providing structural strength and form support to ventilation pipes.