Heating Cooker Dual Airflow Mixing for Lower Discharge Temperature
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Solution Overview
Problem
The existing heating cooker design, as disclosed in JP 2005-3317 A, faces inefficiencies in mixing heat flows and cooling air, leading to inadequate reduction of the discharged air flow temperature.
Innovation Solution
The proposed heating cooker incorporates a heating cooking compartment, a housing, a heating unit, a fan, and a flow channel. The fan generates two air flows: one circulating through the heating unit and another through the space outside the heating unit. The flow channel directs the heated air from the heating unit to the discharge unit, where it is mixed with the cooler air flow before discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling air is supplied from an outer circumferential part of the heat flow parallel to the traveling direction, then the structure is simple, but the heat flow and cooling air are not sufficiently mixed, resulting in inadequate temperature reduction of discharged air
Solution Approach 1:
The flow channel is designed to supply cooling air from a direction substantially perpendicular to the traveling direction of the heat flow, rather than parallel to it. This dimensional change in air supply direction enables effective mixing between the cooling air and heat flow while maintaining structural simplicity, thereby reducing the temperature of discharged air.
2Productivity
If cooling air is supplied parallel to the heat flow direction, then the flow channel structure is simple, but mixing efficiency is poor
Solution Approach 1:
The flow channel supplies cooling air from a direction substantially perpendicular to the traveling direction of the heat flow. This perpendicular arrangement creates effective mixing between the cooling air and heat flow by introducing the cooling air from a different dimension, significantly improving mixing efficiency without complicating the overall structure.
3Temperature
If the flow channel guides only heated air to the discharge unit, then the discharge unit receives concentrated heat flow, but the mixing with cooler air is insufficient
Solution Approach 1:
The flow channel is configured to supply cooling air from a direction substantially perpendicular to the traveling direction of the heat flow toward the discharge unit. This perpendicular supply method ensures that the cooling air and heat flow are thoroughly mixed before discharge, effectively reducing the temperature of the discharged air flow while maintaining ease of operation.
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
This configuration effectively reduces the temperature of the discharged air flow by ensuring thorough mixing of the heated and cooled air streams before discharge.
Implementation Method 1
The fan generates a first air flow circulating through a space other than the heating unit and a second air flow circulating through the heating unit
Implementation Method 2
a second air flow circulating through the heating unit... The second air flow guided to the vicinity of the discharge unit through the flow channel
Data Source
Figure 1
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AI summary
A heating cooker (100) includes a heating cooking compartment (50), a housing (10), a first heater unit (120), a cooling fan, and a second flow channel section. The heating cooking compartment (50) allows a heating-target object to be accommodated therein. The housing (10) accommodates the heating cooking compartment (50). The first heater unit (120) heats the heating-target object. The cooling fan (200) generates a first air flow (AF) circulating through a space other than the first heater unit (120) and a second air flow (BF) circulating through the first heater unit(120). The second flow channel section (720) guides only the second air flow that has passed through the first heater unit (120) to the vicinity of a discharge unit (40) communicating with the outside of the housing. The second air flow (BF) guided to the vicinity of the discharge unit (40) through the second flow channel section ( 720) and the first air flow (AF) are joined and discharged from the discharge unit (40).