Ventilation apparatus and cooking system having the same
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Solution Overview
Problem
Downdraft hoods installed on kitchen islands for space efficiency and design suffer from lower suction efficiency due to parallel air discharge, requiring larger suction fans that increase noise and system size, and necessitate additional ducts and construction costs.
Innovation Solution
A ventilation apparatus with a simplified duct structure that uses a swirl generating unit to enhance suction efficiency by directing polluted air away from the center, eliminating the need for external ducts and reducing system size, incorporating a suction fan, filters for air purification, and a swirler fan to create a swirl for efficient air intake.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a downdraft hood is mounted on a kitchen island for space utilization efficiency and design, then space utilization is improved, but suction efficiency deteriorates due to parallel air discharge configuration
Solution Approach 1:
The patent inverts the conventional parallel discharge configuration by implementing a perpendicular discharge orientation. The air discharge port is positioned to discharge processed air perpendicular to the suction direction, creating a cross-flow pattern that enhances suction efficiency while maintaining the downdraft hood's space-saving benefits.
Solution Approach 2:
The patent transitions from a two-dimensional parallel discharge configuration to a three-dimensional perpendicular discharge arrangement. By discharging air in a direction perpendicular to the suction plane, the system adds a spatial dimension to the airflow pattern, improving suction efficiency without compromising the compact downdraft design.
2Productivity
If the capacity of suction fan is increased to increase suction efficiency, then suction efficiency is improved, but noise increases and system size increases
Solution Approach 1:
The patent inverts the conventional approach of increasing fan capacity to improve suction efficiency. Instead, it reverses the discharge direction to perpendicular orientation, which naturally enhances suction efficiency through improved airflow dynamics without requiring a larger fan, thereby reducing noise and system size.
Solution Approach 2:
The patent changes the discharge direction parameter from parallel to perpendicular relative to the suction direction. This parameter change optimizes the airflow pattern and suction efficiency, allowing the use of a smaller, quieter fan while achieving the desired ventilation performance.
3Area of stationary object
If a downdraft hood is mounted on a kitchen island, then space utilization is improved, but additional duct installation is needed which increases construction costs
Solution Approach 1:
The patent merges the air intake and discharge functions into a single integrated unit. The downdraft hood simultaneously performs suction through the cooking surface and discharges processed air perpendicular to the suction direction, eliminating the need for separate duct installations and reducing construction complexity.
Solution Approach 2:
The patent implements a multi-functional downdraft hood that combines suction, air processing, and perpendicular discharge capabilities in one device. This universal design eliminates the need for additional external ductwork, simplifying the overall ventilation system and reducing construction costs.
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 increases suction efficiency for polluted air and smoke, reduces noise, and enhances space utilization by eliminating the need for external ducts, while maintaining high purification efficiency through integrated filters, thus improving overall kitchen island design and functionality.
Implementation Method 1
The suction fan may be provided at an inside the body and configured to generate a suction force for the polluted air to be taken in through the suction port
Implementation Method 2
The at least one filter may be mounted at an inside the passage and configured to purify the air passing through the passage
Implementation Method 3
The ventilation apparatus may further include a swirl generating unit to generate a swirl at an upper portion of the heating apparatus
Data Source
AI summary
A ventilation system that allows air to be directly discharged to an outside of a ventilation apparatus, the ventilation system including a body and the ventilation apparatus provided at an edge of an upper surface of the body and configured to take in polluted air generated during cooking, wherein the ventilation apparatus includes a suction port configured to take in the polluted air, a suction fan provided at an inside of the body and configured to generate a suction force for the polluted air to be taken in through the suction port, a passage through which the air taken in through the suction port passes, at least one filter mounted at an inside the passage and configured to purify the air passing through the passage, and an exit port communicating with one end portion of the passage and configured to discharge the air purified by the at least one filter indoors.