Plastic Furnace Riser Block Vibration Damping

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Solution Overview

Problem

Existing furnace supports made of metal are heavy, prone to rust and corrosion, and do not provide vibration dampening, making them difficult to install and maintain, while also posing safety risks due to sharp edges and corners.

Innovation Solution

A furnace riser block made from durable, lightweight plastic with a molded construction, featuring a wide flange for stability, non-sharp edges, and integrated vibration isolators to absorb noise and vibrations, allowing for easy installation and adaptability to different furnace sizes and clearance requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If metal furnace supports are used, then strength and durability are provided, but weight increases and rust/corrosion susceptibility occurs

Engineering Contradiction:
Improvesupport strengthVSAvoidsupport weight
Core Design Contradiction:
StrengthVSWeight of moving object

Solution Approach 1:

The patent changes the material parameter from metal to plastic, fundamentally altering the density and weight characteristics while maintaining structural integrity through molded design features such as ribbing and flange configurations

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent uses plastic as a composite material alternative to metal, achieving both weight reduction and corrosion resistance while maintaining sufficient strength through proper material selection and structural design

Inventive Principle:
Principle #40Composite materials

2Strength

If metal furnace supports are used, then structural strength is provided, but installation time increases due to handling difficulty

Engineering Contradiction:
Improvesupport strengthVSAvoidinstallation time
Core Design Contradiction:
StrengthVSLoss of time

Solution Approach 1:

Changing from metal to plastic material reduces weight and improves handling characteristics, allowing installers to more easily position and install the supports without specialized equipment or additional time

Inventive Principle:
Principle #35Parameter changes

3Force

If metal furnace supports are used, then load-bearing capacity is provided, but vibration dampening is not achieved

Engineering Contradiction:
Improveload-bearing capacityVSAvoidvibration and noise
Core Design Contradiction:
ForceVSObject-generated harmful factors

Solution Approach 1:

The patent changes the material damping characteristics by using plastic instead of metal, which inherently provides vibration dampening and noise reduction while maintaining load-bearing capacity through structural design

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent converts the potential weakness of plastic (perceived as less strong than metal) into a benefit by utilizing its vibration-dampening properties to reduce noise and harmful vibrations from the furnace

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

4Weight of moving object

If molded plastic construction is used, then weight is reduced and corrosion resistance is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvesupport weightVSAvoidmolded construction complexity
Core Design Contradiction:
Weight of moving objectVSDevice complexity

Solution Approach 1:

The patent merges multiple functions into a single molded plastic component, including structural support, vibration dampening, and corrosion resistance, which simplifies the overall system despite the complexity of the molding process

Inventive Principle:
Principle #5Merging (Combining)

5Stability of the object's composition

If flange width is increased for stability, then width-to-height ratio improves, but material usage increases

Engineering Contradiction:
Improveriser block stabilityVSAvoidplastic material usage
Core Design Contradiction:
Stability of the object's compositionVSQuantity of substance

Solution Approach 1:

The patent applies local quality by concentrating material where needed for stability (in the flange and rib structures) while using less material in other areas, optimizing the balance between stability and material usage

Inventive Principle:
Principle #3Local quality

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 plastic riser block provides ten times the strength of metal supports, reduces installation time and costs, minimizes maintenance, and ensures stable, long-term use without rust or corrosion, while preventing damage and injury during handling.

Implementation Method 1

they absorb vibration and noise to quiet noisy furnace units

Methodology Applied
Scientific EffectVibration absorption: Damping

Data Source

PatentUS8220768B1Furnace riser
Publication Date: 2012.07.17 RECTORSEAL LLC
  • US8220768B1 patent drawing
  • US8220768B1 patent drawing
  • US8220768B1 patent drawing

AI summary

A furnace riser block configured for placement under residential or commercial furnaces and having a generally isosceles trapezoid configuration when viewed from any of its four sides. It is made from strong and lightweight plastic materials that absorb vibration. At least two riser blocks are used together to support a furnace, each having a bottom flange, four corner protrusions, two side protrusions offset from a central location, a deep draft on all four of its sides, a high width-to-height ratio, vertical ribbing that creates a scalloped configuration and increases its vertical loading capability, and multiple indentations in its top surface each configured for receiving a metal jacket riser member that gives an additional inch of clearance when needed in an installation and/or receipt of a vibration isolator. The furnace riser block is stronger, lighter in weight, and safer to handle and ship, than known furnace supports made from metal material.