Gas Oven Blower Combustion Air and Casing Cooling
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Solution Overview
Problem
Traditional gas ovens have poor gas combustion efficiency due to insufficient combustion air, leading to energy inefficiency and safety concerns from high casing temperatures.
Innovation Solution
A gas oven design incorporating a blower to supply combustion air to the combustion device and airflow passage, enhancing combustion efficiency and using airflow to dissipate heat from the casing, thereby reducing its temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If natural air introduction through nozzle is used, then device complexity is reduced, but gas combustion efficiency deteriorates
Solution Approach 1:
The blower is designed to perform multiple functions: it supplies combustion air to the combustion device for burning gas, and simultaneously supplies cooling air to the airflow passage to cool the casing. This multi-functionality resolves the contradiction by improving combustion efficiency without adding excessive complexity, as one device accomplishes what would otherwise require multiple separate systems.
Solution Approach 2:
The invention uses a blower (pneumatic device) to force air through the system, replacing passive natural convection with active pneumatic control. This enables sufficient combustion air supply to improve gas combustion efficiency while the same pneumatic system is utilized for cooling purposes.
2Device complexity
If insufficient combustion air is provided, then device complexity is reduced, but gas combustion efficiency deteriorates
Solution Approach 1:
The blower serves dual purposes: enhancing combustion efficiency by providing sufficient combustion air and cooling the casing through the airflow passage. This resolves the contradiction between device complexity and productivity by having one component perform multiple critical functions.
Solution Approach 2:
The invention changes the parameter of air supply from passive natural convection to active forced convection using a blower. This parameter change enables sufficient oxygen supply for complete combustion, thereby improving gas combustion efficiency and productivity.
3Loss of energy
If high temperature casing is allowed, then energy loss is reduced, but safety deteriorates due to burn risk
Solution Approach 1:
The invention converts the harmful high temperature of the casing into a beneficial cooling process. The airflow passage uses the temperature difference between the hot casing and ambient air to drive cooling airflow, which absorbs excess heat from the casing. This converts the harmful thermal energy into useful cooling action, reducing burn risk while managing energy loss.
Solution Approach 2:
The cooling airflow acts as an intermediary between the hot casing and the external environment. It absorbs heat from the casing through the airflow passage and carries it away, preventing direct contact burns while also reducing thermal transfer to the countertop.
4Power
If high temperature casing is maintained, then heating efficiency is improved, but heat transfer to countertop increases
Solution Approach 1:
The high temperature of the casing, which causes harmful heat transfer to the countertop, is converted into a driving force for cooling airflow. The temperature difference between the hot casing and ambient air creates natural convection currents that are enhanced by the blower, absorbing excess heat before it can transfer to the countertop.
Solution Approach 2:
The cooling airflow serves as an intermediary thermal barrier between the hot casing and the countertop. It absorbs heat from the casing through the airflow passage and dissipates it through the exhaust opening, preventing direct thermal conduction to the countertop surface.
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
Improved gas combustion efficiency and reduced casing temperature, enhancing user safety by preventing burns and minimizing heat transfer to the countertop.
Implementation Method 1
The blower has a blower outlet communicating with the inlet, in which the blower is adapted to outputting an airflow from the blower outlet
Implementation Method 2
the air which passes through the airflow passage can also take away the heat dissipated by the inner oven body to reduce the temperature of the casing
Implementation Method 3
the heating device of the gas oven is a gas burner which generates heat energy by burning gas to heat the baking space of the gas oven
Data Source
AI summary
A gas oven includes a casing, an inner oven body, a blower, a branched member, a gas supply pipe, and a combustion device. The casing has a feed opening and the inner oven body is disposed in the casing. An airflow passage is located around at least a part of the periphery of the inner oven body between the inner oven body and the casing. The blower has a blower outlet communicating with an inlet of the airflow passage. The branched member includes a branched passage communicating with the blower outlet. The gas supply pipe has a gas outlet. The combustion device is disposed in the inner oven body and communicates with the branched outlet and the gas outlet. The amount of the combustion air can be increased and the temperature of the casing can be reduced.