Dough Proofer Air Duct Venting for Humidity and Airflow Control

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Solution Overview

Problem

Existing dough proofing cabinets lack an effective air flow system and humidity control arrangement, which can lead to suboptimal conditions for dough proofing.

Innovation Solution

A dough proofing apparatus with an air duct assembly that includes inlet openings, heating elements within the duct, and a vent chamber with an exhaust and intake side, allowing for controlled air circulation and humidity management through the use of fans and a selectively venting system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a simple door gap is used for air escape, then the structure is simple, but air flow control and humidity management are insufficient

Engineering Contradiction:
Improveair flow system structureVSAvoidhumidity control effectiveness
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The air duct assembly is segmented into multiple functional sections: inlet openings for air intake, a heating section with heating elements, outlet openings for air delivery, and a vent chamber for humidity control. This segmentation allows each section to perform its specific function independently, improving overall system reliability while maintaining reasonable structural complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The air duct assembly acts as an intermediary component between the proofing chamber and the external environment. It mediates air flow control, heating, and humidity management functions, enabling precise control of conditions within the chamber without requiring complex direct control mechanisms.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If heating elements are placed outside the chamber, then the chamber structure is simple, but temperature control precision is reduced

Engineering Contradiction:
Improvechamber structureVSAvoidtemperature control precision
Core Design Contradiction:
Device complexityVSTemperature

Solution Approach 1:

The heating elements are nested within the air duct assembly, which itself is integrated with the chamber structure. This nesting allows the heating elements to be positioned close to the chamber interior for precise temperature control, while the overall assembly remains compact and integrates multiple functions without significantly increasing structural complexity.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Device complexity

If air is drawn from the chamber through the door gap, then air flow is simple, but air circulation efficiency is low

Engineering Contradiction:
Improveair flow pathVSAvoidair circulation efficiency
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The air duct assembly establishes a continuous air circulation path: air is drawn through inlet openings, heated, circulated through the chamber via outlet openings, and excess air is vented through the vent chamber. This continuous circulation system maintains optimal conditions more effectively than simple door gap air escape, improving productivity while keeping the air flow path relatively simple.

Inventive Principle:
Principle #20Continuity of useful 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 provides improved air flow and humidity control, ensuring optimal conditions for dough proofing by recirculating heated air and adjusting humidity levels based on sensor feedback, enhancing the proofing process.

Implementation Method 1

At least one heating element is located within the air duct assembly for heating the air

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 2

a fan positioned for drawing air from the chamber through the inlet opening into the air duct assembly

Methodology Applied
Scientific EffectForced Convection: Forced Convection

Implementation Method 3

A vent chamber is divided into an exhaust side and an intake side, the exhaust side fluidly connected to the air duct assembly, the intake side fluidly connected to the proofing chamber

Methodology Applied
Scientific EffectConvection: Convection

Data Source

PatentUS9980494B2Dough proofing apparatus and related methods
Publication Date: 2018.05.29 ILLINOIS TOOL WORKS INC
  • US9980494B2 patent drawing
  • US9980494B2 patent drawing
  • US9980494B2 patent drawing

AI summary

A dough proofing apparatus includes a proofing chamber for holding dough during proofing operations and having a door for accessing the proofing chamber. An air duct assembly includes at least one inlet opening and at least one fan for drawing in air from the proofing chamber. At least one heating element is located within the air duct assembly for heating the air and a flow path for delivering the heated air back to the proofing chamber. A vent chamber is divided into an exhaust side and an intake side, the exhaust side fluidly connected to the air duct assembly, the intake side fluidly connected to the proofing chamber.