Rotating Barbeque Tray Access Without Heat Loss

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Solution Overview

Problem

Commercial barbeque ovens face challenges with uneven cooking and unsafe access to food items due to large, stationary cooking trays that require operators to lean and reach, leading to potential burns and unsanitary conditions, as well as increased risk of fire flare-ups from grease accumulation.

Innovation Solution

A barbeque oven with a rotatable and slideable cooking tray that extends from the housing, allowing for convenient and safe access to all areas of the tray, featuring a pinion gear mechanism for rotation and a soapstone-lined chamber for even heat distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a large stationary cooking tray is used to cook large quantities of food, then productivity is improved, but ease of operation deteriorates as operators must lean and reach to access food

Engineering Contradiction:
Improvecooking capacityVSAvoidaccess to food
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The cooking tray is transformed from a stationary component to a rotatable one, allowing it to rotate 360 degrees within the cooking chamber. This dynamic capability enables operators to access food items at any position on the tray without leaning or reaching, while the tray remains large enough to maintain high cooking capacity

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The tray rotation mechanism adds a rotational dimension to the otherwise static tray system. By enabling rotation around the vertical axis, operators can access food items distributed across the entire perimeter of the tray, effectively utilizing the circular space without requiring forward reaching motion

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Ease of operation

If the cooking tray is extended out of the oven for access, then ease of operation improves, but heat loss increases and safety risks arise

Engineering Contradiction:
Improveaccess to foodVSAvoidheat loss
Core Design Contradiction:
Ease of operationVSLoss of energy

Solution Approach 1:

Instead of extending the tray outward, the system rotates the tray in place within the cooking chamber. This dynamic rotation allows operators to bring food items to the accessible perimeter position without opening the oven door or extending the tray, thereby maintaining thermal insulation and preventing heat loss

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The rotatable tray acts as an intermediary mechanism between the food items and the operator. By rotating the tray to positioned food at the nearest point to the operator, it eliminates the need to extend the tray or open the door, thus preventing direct heat loss while maintaining safe and convenient access

Inventive Principle:
Principle #24Intermediary (Mediator)

3Device complexity

If food remains stationary on the cooking tray, then device complexity is reduced, but harmful factors increase due to uneven cooking and fire flare-ups

Engineering Contradiction:
Improvetray mechanismVSAvoidfire flare-ups
Core Design Contradiction:
Device complexityVSObject-generated harmful factors

Solution Approach 1:

The cooking tray is made rotatable to dynamically move food items across different heating zones. This rotation prevents grease from continuously dripping onto the same hot spot, thereby preventing fire flare-ups while maintaining a relatively simple mechanical structure with a single rotation mechanism

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The rotatable tray enables periodic movement of food items through different positions relative to the heat source. This periodic rotation ensures that no single location receives continuous concentrated heat exposure, preventing grease accumulation and flare-ups while distributing cooking heat more evenly

Inventive Principle:
Principle #19Periodic action

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 solution ensures even cooking, reduces the risk of fire flare-ups, and enhances operator safety by allowing easy access to all food items without bending or reaching, minimizing heat loss and preventing unsanitary contact.

Implementation Method 1

a soapstone-lined chamber for even heat distribution

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

featuring a pinion gear mechanism for rotation

Methodology Applied
Scientific EffectMechanical gear transmission: Gear

Data Source

PatentUS9198436B2Barbeque oven with rotating cooking tray
Publication Date: 2015.12.01 COOK WILLIAM C
  • US9198436B2 patent drawing
  • US9198436B2 patent drawing
  • US9198436B2 patent drawing

AI summary

A barbeque oven is provided with the capacity to cook a variety of food items. The barbeque oven of the present invention includes a cooking tray that is slideable between a first position, where the cooking tray is located substantially within the cooking chamber and the cooking tray is driven by a driving member, and a second position, where at least a portion of the cooking tray extends through an opening in the oven housing and the cooking tray is disengaged from the driving member such that the cooking tray freely rotates. As a result, unlike conventional barbeque ovens, an operator using the present invention need not bend over nor reach far to flip, rotate, or otherwise access the food items on the cooking tray.