Telescoping ventilation hood

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Solution Overview

Problem

Conventional telescoping ventilation hood devices for grills are inefficient in filtering out grease, dirt, and debris due to accumulated substances in the telescoping tubing, which hinders smooth movement and durability, and often require bulky grease cups that interfere with the hood's proximity to the grill.

Innovation Solution

A telescoping ventilation hood device with a telescoping tube, a grease filter box, a filter, and spring balancers that allow for adjustable positioning close to the grill, featuring a removable filter with angled strips and a second grease collector to efficiently capture grease and debris, while the spring balancers ensure smooth movement and stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a wire rope is positioned inside the telescoping tubing to raise and lower the hood, then the hood can be moved vertically, but grease and debris accumulate on the wire rope preventing smooth movement and reducing durability

Engineering Contradiction:

Improvevertical movement of hoodVSAvoiddurability of wire rope

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The wire rope is extracted from the interior of the telescoping tubing and repositioned to the exterior. This prevents grease and debris inside the tubing from accumulating on the wire rope, thereby maintaining smooth movement and extending the durability of the wire rope while preserving the vertical movement function.

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If a grease cup is disposed at the bottom of the filter assembly, then grease can be collected, but the device becomes bulky and the grease cup protrudes from the hood preventing close positioning to the grill

Engineering Contradiction:

Improvegrease collection capabilityVSAvoiddistance from hood to grill

Core Design Contradiction:

ReliabilityVSLength of moving object

Solution Approach 1:

The grease collection function is relocated from a vertical protrusion below the hood to a horizontal extension along the side of the hood. This dimensional change allows grease to be collected effectively without increasing the vertical profile, enabling the hood to position closer to the grill while maintaining grease collection capability.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Reliability

If a filter assembly with concentric and cylindrical filtering layers is used, then filtering can be performed, but the structure is complex and grease and debris are not efficiently collected

Engineering Contradiction:

Improvefiltering functionVSAvoidstructure of filter assembly

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The filter assembly is segmented into distinct functional zones: an outer cylindrical filter layer for particle filtration, an inner conical grease collector for grease accumulation, and a debris collection chamber. This segmentation simplifies the overall structure compared to concentric cylindrical layers while improving efficiency by directing different contaminants to appropriate collection zones.

Inventive Principle:

Principle #1Segmentation

4Productivity

If the hood is positioned close to the grill for effective smoke collection, then ventilation efficiency improves, but grease and debris accumulation in the telescoping mechanism hinders smooth movement

Engineering Contradiction:

Improveventilation efficiencyVSAvoidsmooth movement of telescoping tube

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

Inventive Principle:

Principle #2Taking out (Extraction)

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 device effectively filters out grease and debris, allows for closer positioning to the grill without hindering movement, and maintains durability by preventing grease accumulation on the telescoping mechanism, thus improving ventilation efficiency and sanitation.

Implementation Method 1

a first and a second spring balancer mounted on the first portion of the telescoping tube and each including a wire connected to the second portion of the telescoping tube, the first and second spring balancers being configured to exert a respective first and second force on the second portion of the telescoping tube, the first and second forces biasing the second portion of the telescoping tube in the longitudinal direction of the telescoping tube

Methodology Applied

Scientific EffectSpring force: Spring

Implementation Method 2

a filter configured to be removably mounted within the grease filter box in an angled orientation with respect to a gravitational direction

Methodology Applied

Scientific EffectFiltration: Filter (physical)

Implementation Method 3

a filter configured to be removably mounted within the grease filter box in an angled orientation with respect to a gravitational direction

Methodology Applied

Scientific EffectGravity: Gravitation

Data Source

PatentUS11796185B1Telescoping ventilation hood

Publication Date: 2023.10.24 KATASH CAPITAL LLC

AI summary

A telescoping ventilation hood device for a grill includes a hood wherein a first grease collector is attached to the hood; a telescoping tube for adjusting distance between the hood and the grill, wherein one end thereof is connected to the hood; a grease filter box connected to the other end of the telescoping tube; a filter removably received within the grease filter box in a slanted direction with respect to a gravitational direction; a secondary grease collector removably received within the grease filter box; and at least two spring balancers attached to an outer surface of the telescoping tube.