Measurement device for determining oven heating parameters
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Solution Overview
Problem
Accurately measuring heating parameters in brick ovens is challenging due to the complex heat transfer mechanisms involving convection, radiation, and conduction, and existing temperature sensing devices are not equipped to handle these unique conditions effectively.
Innovation Solution
A measurement device comprising a support plate with upper and lower sensor cups, each containing a liquid well and a temperature sensor, positioned to monitor temperature changes as the liquid heats and evaporates, allowing for the determination of heating parameters by analyzing temperature data from both conduction and radiation modes of heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing temperature sensing devices are used in brick ovens, then the device complexity is reduced, but the measurement precision of heating parameters deteriorates due to inability to accurately capture complex heat transfer mechanisms
Solution Approach 1:
The measurement device is segmented into multiple sensor cups positioned at different locations (upper surface and lower surface of support plate) to independently measure heat transfer from different directions. Each sensor cup contains liquid and a temperature sensor to specifically measure heat flux in its local zone, allowing accurate capture of complex multi-directional heat transfer patterns in the brick oven.
Solution Approach 2:
Liquid is introduced as an intermediary medium between the sensor cup and the heat source. The liquid absorbs heat from the oven environment and transfers it to the temperature sensor, enabling indirect but accurate measurement of heating parameters while protecting the sensor from direct exposure to extreme oven conditions.
2Measurement precision
If multiple sensor cups with liquid are used to measure different heat transfer modes, then the measurement precision improves, but the device complexity increases due to additional components and positioning requirements
Solution Approach 1:
The sensor cup is designed as a universal multi-functional component that can be positioned in multiple locations (upper and lower surfaces) to measure different heat transfer modes. The same basic sensor cup structure with liquid and temperature sensor configuration serves multiple measurement purposes, reducing overall device complexity while maintaining measurement precision across different heat transfer scenarios.
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
Enables accurate assessment of heat energy and power output in brick ovens, allowing for the replication of professional cooking conditions in consumer appliances, ensuring restaurant-quality results at home.
Implementation Method 1
heat is transferred directly to the food from the cooking deck via conduction
Implementation Method 2
the oven has a natural airflow therethrough that provides for convective heating
Implementation Method 3
the dome's surface reflects heat downward towards the cooking deck to provide radiative heating
Implementation Method 4
the liquid is heated and evaporates from the sensor cup
Data Source
AI summary
A measurement device for determining heating parameters of an oven may generally include a support plate and at least one sensor cup coupled to the support plate. The sensor cup may define a liquid well for receiving a volume of liquid and may include a bottom wall defining a floor of the liquid well. In addition, the measurement device may include a temperature sensor positioned adjacent to the floor of the liquid well such that the temperature sensor is configured to be in fluid contact with at least a portion of the volume of the liquid received within the liquid well. The temperature sensor may be configured to monitor a temperature of the liquid as the liquid is heated and evaporates from the sensor cup.