Barbecue Oven Layout With Front Fire Access and Heat Shield
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Solution Overview
Problem
Commercial kitchen ovens, particularly barbecue ovens, face space constraints due to vertical orientation, leading to inefficiencies in heat transfer between the fire and cooking chambers, and require additional space for side access to the fire chamber, which is inconvenient.
Innovation Solution
A barbecue oven design with a front-mounted fire chamber and angled burner tube, combined with a heat shield above the fuel vessel, enhances heat transfer and allows for compact placement by eliminating the need for side access, improving heat circulation and reducing space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the fire chamber is located to the side of the cooking chamber, then grease can be contained away from the fuel, but additional side space is required for access which increases the oven's footprint
Solution Approach 1:
The fire chamber is repositioned from a lateral arrangement to a vertical arrangement directly beneath the cooking chamber. This dimensional change eliminates the need for side access space while maintaining grease containment through the vertical separation and heat shield design.
2Area of stationary object
If the oven is vertically oriented to save space, then the footprint is reduced, but heat transfer efficiency between the fire chamber and cooking chamber decreases due to increased distance
Solution Approach 1:
A heat shield is introduced as an intermediary component positioned between the fire chamber and cooking chamber. The heat shield reflects and redirects thermal energy upward into the cooking chamber, maintaining heat transfer efficiency despite the vertical separation distance.
Solution Approach 2:
The burner tube is positioned at an oblique angle rather than vertically, changing the geometric parameters of heat delivery. This angular configuration optimizes the path of hot gases and flames to improve thermal coupling between the fire chamber and cooking chamber.
3Object-affected harmful factors
If the fire chamber is accessed from the side, then grease safety is maintained, but the oven requires more space and becomes less compact
Solution Approach 1:
Access to the fire chamber is moved from the lateral dimension to the front dimension. The fire chamber door is positioned on the front face of the oven, allowing operators to access the fire chamber from the front without requiring side clearance, thereby simplifying the space arrangement.
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 design enhances heat transfer efficiency and reduces space needs by allowing for a more compact layout, improving cooking performance while maintaining safety and accessibility.
Implementation Method 1
A heat shield in the housing is disposed above the solid fuel vessel location in the fire chamber and below the cooking chamber bottom wall. The heat shield separates the fire chamber from the cooking chamber for impairing radiative heat transfer from the fire chamber to the cooking chamber.
Implementation Method 2
A burner chamber in the housing holds a burner for producing a flame to ignite the solid fuel in the solid fuel vessel in the fire chamber.
Implementation Method 3
A tube has a longitudinal axis and is attached to an outlet of the burner and opens into the fire chamber and toward the burner side of the solid fuel vessel when disposed in the fire chamber. The tube is oriented so that the longitudinal axis of the tube is oblique to the burner side of the solid fuel vessel
Data Source
AI summary
An oven for cooking foods includes a housing having a front, a back, a top, a bottom and opposing first and second sides. The oven further includes a vessel for holding solid fuel for cooking. A fire chamber in the housing is adapted for holding the solid fuel vessel. The housing includes a first movable closure at a location on the front of the housing mounted for opening and closing at a location to permit selective access to the solid fuel vessel in the fire chamber. A cooking chamber in the housing is adapted for holding food to be cooked by the oven. The housing further includes a second movable closure on the front of the housing mounted for opening and closing at a location to permit access to the cooking chamber.