Retractable Cooker Hood Suction Structure for Cleaner Air Capture
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Solution Overview
Problem
Existing cooking devices with hood functions, such as over-the-range type cooking devices, face challenges in effectively suctioning contaminated air due to limitations in air path design and suction mechanism efficiency.
Innovation Solution
The cooking device incorporates a hood with a movable part and a tiltably connected suction part that can be withdrawn and tilted downward, featuring multiple suction modules with different tilting angles and a limitation mechanism to enhance air suction performance, including a guide groove and protrusion system to control tilting and prevent exposure of suction ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the hood is designed with a fixed structure, then the device is simple and easy to manufacture, but the suction performance of contaminated air is insufficient
Solution Approach 1:
The suction part is designed to be movable relative to the hood casing, allowing it to be withdrawn and tilted downward when needed. This dynamic configuration enables the suction ports to be exposed to the outside for improved air suction performance, while being retractable to maintain a compact appearance when not in use.
Solution Approach 2:
The hood is divided into separate components: a fixed hood casing and a movable suction part. This segmentation allows the suction part to be independently controlled and positioned, enabling it to be withdrawn for operation and retracted for storage, thus resolving the contradiction between performance and simplicity.
2Productivity
If the suction part is always exposed, then the suction performance is maximized, but foreign substances can enter the hood and aesthetic appearance is compromised
Solution Approach 1:
The suction part is designed to be movable, allowing it to be withdrawn and tilted downward only when suction is needed. When retracted, the suction ports are protected from foreign substances and the hood maintains its aesthetic appearance. This dynamic positioning resolves the contradiction between performance and protection.
3Productivity
If the suction part is withdrawn and tilted downward, then the suction performance is improved, but the device complexity increases due to additional mechanisms
Solution Approach 1:
The suction part is designed to be tiltably connected to the movable part, allowing it to be tilted downward when withdrawn. This tilting mechanism is simple yet effective in directing airflow and improving suction performance without adding excessive complexity to the overall device.
Solution Approach 2:
The suction part is tilted at different angles relative to the lower surface of the hood casing, creating a three-dimensional configuration that optimizes airflow direction. This angular arrangement improves suction performance by directing air flow more effectively into the suction ports.
4Productivity
If multiple suction modules with different tilting angles are provided, then the suction performance is enhanced, but the manufacturing complexity increases
Solution Approach 1:
The suction part is divided into multiple suction modules, each with different tilting angles. This segmentation allows each module to be optimized for specific airflow patterns while maintaining a modular structure that simplifies manufacturing and assembly compared to a single complex component.
Data Source
AI summary
A cooking device includes a main body with a cooking space, and a hood provided at the lower side of the main body, the hood is configured to suction air and includes a hood casing, a movable part that is configured to be withdrawn from the hood casing and a suction part with a front suction port, where the front suction port is exposed to an outside of the hood casing based on the movable part being withdrawn from the hood casing, and the front suction portion is not exposed to the outside of the hood casing based on the movable part being inserted in the hood casing.